Abstract

Disclosed is a non-invasive flow rate profile measuring device for non-invasively measuring the flow rate profile of a fluid in a pipe. The non-invasive flow rate profile measuring device disclosed herein includes a 1-1st sensor unit and a 1-2nd sensor unit that are disposed spaced apart from each other in, or adjacent to, a central portion of the outer surface of a pipe through which a fluid passes. The 1-1st sensor unit includes a 1-1st ultrasonic transducer and a 1-1st medium unit disposed between the 1-1st ultrasonic transducer and the pipe. The 1-1st medium unit includes: a first sensor including a 1-1st meta structure for converting the type of ultrasonic waves; and a 2-1st sensor unit and a 2-2nd sensor unit that are disposed spaced apart from each other on the outer surface of the pipe and spaced apart from the first sensor. The 2-1st sensor unit includes a 2-1st ultrasonic transducer and a 2-1st medium unit disposed between the 2-1st ultrasonic transducer and the pipe. The 2-1st medium unit may include a second sensor including a 2-1st meta-structure for converting the type of ultrasonic waves.

IPC Classes  ?

• G01P 5/24 - Measuring speed of fluids, e.g. of air streamMeasuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the direct influence of the streaming fluid on the properties of a detecting acoustical wave
• G01F 1/66 - Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters

Abstract

Provided are a beam splitter using a multiple refractive index layer, which enables high magnification measurement by transmitting infrared light and reflecting visible light, and a defective element detection device including the same. The beam splitter includes a multiple refractive index layer and a base layer. The multiple refractive index layer is configured to reflect first light and transmit second light having a wavelength longer than a wavelength of the first light. The base layer is provided on one side of the multiple refractive index layer and configured to transmit the second light transmitted through the multiple refractive index layer. The multiple refractive index layer includes a first refractive index layer having a first refractive index and a second refractive index layer having a second refractive index less than the first refractive index.

IPC Classes  ?

• G02B 27/12 - Beam splitting or combining systems operating by refraction only
• G01N 21/88 - Investigating the presence of flaws, defects or contamination
• G02B 27/00 - Optical systems or apparatus not provided for by any of the groups ,
• G02B 27/10 - Beam splitting or combining systems

Abstract

A thin film thickness measuring apparatus and a method that can overcome the measurement limit of the reflected ultrasonic wave signal when measuring the thickness of a thin film using retroreflection of ultrasonic waves can be provided. A thin film thickness measuring apparatus includes: an ultrasonic retroreflector that is provided under a test object formed in the shape of a thin film and retroreflects an ultrasonic wave incident through the test object; an ultrasonic wave input portion that is provided on one side of the test object and inputting an ultrasonic wave to one side of the test subject; and a measurement portion that is connected to the ultrasonic wave input portion and measures an arrival time of the ultrasonic wave reflected through the test object.

IPC Classes  ?

• G01B 17/02 - Measuring arrangements characterised by the use of infrasonic, sonic, or ultrasonic vibrations for measuring thickness

Abstract

The provided is an ultra-wideband electromagnetic wave absorber having a hexagonal double layer structure, and in the ultra-wideband electromagnetic wave absorber, the first conductive pattern disposed on the top of the first dielectric layer and the second conductive pattern disposed on the top of the second dielectric layer are arranged in an up-down double layer structure, thereby expanding the electromagnetic wave absorption bandwidth, and even when applied to a corner or a curved structure forming 60° or 120° by hexagonal unit cells, the unit cells can be periodically arranged at the same interval. In addition, since dielectrics with a difference of less than 10% in dielectric constant in a vacuum state have a relatively low specific gravity, the overall weight can be made very light by using such dielectrics in the first dielectric layer and the second dielectric layer.

IPC Classes  ?

• H05K 9/00 - Screening of apparatus or components against electric or magnetic fields

Abstract

In a camouflage fiber, a manufacturing method therefor, and a camouflage fabric comprising same, the camouflage fiber comprises: a wire; and a strap part formed on the outer circumferential surface of the wire, wherein the strap part comprises a base film, and a graphene layer formed so as to be laminated into a plurality of layers on the base film. In this case, the strap part is formed in the length direction, and then is wound along the outer circumferential surface of the wire.

IPC Classes  ?

• D03D 1/00 - Woven fabrics designed to make specified articles
• H01B 5/14 - Non-insulated conductors or conductive bodies characterised by their form comprising conductive layers or films on insulating-supports
• C01B 32/194 - After-treatment
• D03D 15/67 - Metal wires
• D03D 11/00 - Double or multi-ply fabrics not otherwise provided for

Abstract

The present invention provides a stretchable panel that has an improved physical structure and thus can form a wide viewing angle without exceeding a stretching strain rate limit, and that can suppress the occurrence of wrinkles or lifting due to being below the stretching strain rate limit. To this end, the stretchable panel comprises: a central portion disposed in a central region of a curved mold; and a plurality of peripheral portions arranged in the remaining peripheral regions of the curved mold and partitioned by cut portions. Each of the cut portions is formed to be wider at the edges. Accordingly, the stretchable panel can maintain a flat state in an unstretched initial state and effectively form a radius of curvature and viewing angle corresponding to the curved mold while stretched to cover at least a portion of the curved mold.

IPC Classes  ?

• G09F 9/30 - Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
• G06F 1/16 - Constructional details or arrangements
• H04M 1/02 - Constructional features of telephone sets

Abstract

An active radiation control window includes a control layer, a filter layer and a resonance layer. The control layer is configured to control transmissivity or absorptivity of an near-infrared light according to an applied voltage. The filter layer is disposed under the control layer, and is configured to transmit a visible light and to reflect the near-infrared light. The resonance layer is disposed between the control layer and the filter layer, and has a dielectric material. Total transmissivity of the visible light is maintained and total reflectivity of the near-infrared light is controlled when the applied voltage is changed.

IPC Classes  ?

• G02F 1/17 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulatingNon-linear optics for the control of the intensity, phase, polarisation or colour based on variable-absorption elements not provided for in groups
• B60J 3/04 - Antiglare equipment associated with windows or windscreensSun visors for vehicles adjustable in transparency

Abstract

The purpose of an embodiment is to provide a full-angle single-mode reflector for an elastic wave, which can reflect only an elastic wave of the same mode as an incident wave mode, regardless of an elastic wave incident condition, by controlling reflectivity by using a reflective scattering matrix. The full-angle single-mode reflector for an elastic wave: includes an anisotropic medium provided at a solid boundary on which an elastic wave including a longitudinal wave and a transverse wave is incident, the anisotropic medium having a preset reflectivity and being formed as a reflector so that the incident elastic wave is reflected under a full-angle single-mode reflection condition; applies a preset reflective scattering matrix to calculate the physical property of the anisotropic medium; and sets the reflectivity of the anisotropic medium to the full-angle single-mode reflection condition by the calculated physical property of the anisotropic medium, thereby reflecting only an elastic wave of the same mode as an incident wave mode regardless of an elastic wave incident condition.

IPC Classes  ?

• H03H 9/02 - Networks comprising electromechanical or electro-acoustic elementsElectromechanical resonators Details
• H03H 9/25 - Constructional features of resonators using surface acoustic waves

Abstract

The present invention relates to lithium metal oxide nanoparticles and a method for preparing the same and provides lithium metal oxide nanoparticles each having a shape of a hexahedron with a square outer cross section or a hexahedron with at least one chamfered corner and comprising a hollow of which a cross section is a square or a square having at least one chamfered corner, and a method for preparing the same, so that the lithium metal oxide nanoparticles can be utilized as an electrode material of a next-generation electronic device in which a contact area between an electrode and an electrolyte is increased to improve the charge and discharge rate characteristics and improve the conductivity.

IPC Classes  ?

• C01G 23/00 - Compounds of titanium
• B82Y 40/00 - Manufacture or treatment of nanostructures

Abstract

The present invention relates to a transfer film for a high-speed transfer process and a transfer method using same. The transfer film for a high-speed transfer process according to the present invention comprises: a first adhesive layer formed of a viscoelastic material to allow a device to adhere thereto; a support layer for supporting the first adhesive layer; a second adhesive layer formed of a viscoelastic material to allow the support layer to adhere thereto; and a rigidity reinforcement layer for reinforcing the rigidity of the film and supporting the second adhesive layer, wherein a placing process, when performed after a picking process, is conducted after the rigidity of the film is weakened by the removal of the rigidity reinforcement layer.

IPC Classes  ?

• H01L 21/56 - Encapsulations, e.g. encapsulating layers, coatings
• H01L 21/67 - Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereofApparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components
• B32B 7/12 - Interconnection of layers using interposed adhesives or interposed materials with bonding properties
• C09J 7/29 - Laminated material
• C09J 7/30 - Adhesives in the form of films or foils characterised by the adhesive composition

Abstract

Provided are a metastructure for impedance matching for a multilayer or non-uniform barrier, an ultrasonic probe comprising same, and an ultrasonic image diagnosis apparatus comprising same, wherein the metastructure is arranged in a medium material between an ultrasonic transducer and a multilayer barrier so as to be spaced apart from the surface of the multilayer barrier toward the ultrasonic transducer by a predetermined matching distance, and is provided to minimize the difference between the surface impedance at the matching distance and the characteristic impedance of the medium material.

IPC Classes  ?

• A61B 8/00 - Diagnosis using ultrasonic, sonic or infrasonic waves
• A61B 8/08 - Clinical applications
• G01N 29/28 - Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic wavesVisualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object Details providing acoustic coupling
• G01N 29/06 - Visualisation of the interior, e.g. acoustic microscopy
• G10K 11/02 - Mechanical acoustic impedancesImpedance matching, e.g. by hornsAcoustic resonators

Abstract

Disclosed is a measuring device for measuring the height of a foreign object in a pipe comprising an ultrasound transmission unit including an ultrasound generator disposed in a first area of an outer surface of a pipe through which fluid passes, and generating ultrasound, and a transmission medium disposed between the ultrasound generator and the first area to transmit the ultrasound to the first area, an ultrasound receiving unit including a receiving medium unit disposed in the second area of the outer surface of the pipe, and consisting of an ultrasound receiver, and a receiving medium disposed between the ultrasound receiver and the second area, and a signal measurer connected to the ultrasound receiver for measuring the ultrasound signal received by the ultrasound receiver or a signal corresponding thereto.

IPC Classes  ?

• G01N 29/34 - Generating the ultrasonic, sonic or infrasonic waves
• G01N 29/24 - Probes

Abstract

Disclosed are an ultrasound imaging system and an ultrasound imaging method using same. The ultrasound imaging system comprises a channel unit, a correction unit, an imaging unit, and a reference information providing unit. The channel unit comprises multiple channels for transmitting/receiving ultrasound. The correction unit corrects distortion caused by ultrasound barriers in ultrasound signals received by the channel unit. The imaging unit converts ultrasound signals into ultrasound images. The reference information providing unit provides the correction unit with reference information necessary for correction. In this case, the correction unit determines a sample interval by using the reference information, and corrects attenuation distortion and aberration distortion caused by the ultrasound barriers on the basis of signals in the sample interval. The imaging method controls the position of an ultrasound probe, improves the signal-to-noise ratio of subjects, and facilitates attenuation distortion and aberration distortion correction. The imaging method applies time delay set obtained through the aberration correction process to ultrasound transmission channel signals, thereby providing physical attenuation distortion and aberration distortion correction.

IPC Classes  ?

• A61B 8/08 - Clinical applications

Abstract

A 5G band transmissive body includes a base substrate and a pattern portion, wherein the pattern portion is provided on one side of the base substrate and transmits the 5G communication frequency band, and includes a conductive pattern formed by providing a conductive material on a plurality of virtual grid cells arranged in the horizontal and vertical directions, and a plurality of unit areas divided by a virtual vertical line and a virtual horizontal line, which are orthogonally crossing at center of the pattern portion, and a pair of virtual diagonal lines and crossing each other at the center and passing through the corners of the pattern portion, and the conductive pattern is symmetrical with respect to each of the vertical line, horizontal line, or diagonal line in the neighboring unit areas among the plurality of unit areas.

IPC Classes  ?

• H01Q 5/25 - Ultra-wideband [UWB] systems, e.g. multiple resonance systemsPulse systems
• H01Q 1/32 - Adaptation for use in or on road or rail vehicles
• H01Q 1/38 - Structural form of radiating elements, e.g. cone, spiral, umbrella formed by a conductive layer on an insulating support

Abstract

A sound wave delivery structure of the present invention comprises unit structure cells each formed to have a cubic shape and comprising a column portion formed on a region corresponding to sides, and a space portion formed in an internal region surrounded by the column portion. There are a plurality of unit structure cells which are successively arranged in a first direction, in which sound waves are delivered, and a second direction crossing the first direction.

IPC Classes  ?

• G10K 11/02 - Mechanical acoustic impedancesImpedance matching, e.g. by hornsAcoustic resonators
• G01S 7/521 - Constructional features
• G01S 15/06 - Systems determining position data of a target

Abstract

An infrared adaptive transparent camouflage film includes a substrate, a graphene layer, an electrode layer and an ion gel layer. The substrate has dielectric. The graphene layer is disposed on the substrate and stacked in multiple layer. The electrode layer is disposed over the substrate and is spaced apart from the graphene layer. The ion gel layer is disposed over the graphene layer and the electrode layer, or disposed between the graphene layer and the electrode layer, to dope the graphene layer electrically.

IPC Classes  ?

• G02F 1/1523 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulatingNon-linear optics for the control of the intensity, phase, polarisation or colour based on an electrochromic effect characterised by the electrochromic material, e.g. by the electrodeposited material comprising inorganic material
• G02F 1/01 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulatingNon-linear optics for the control of the intensity, phase, polarisation or colour
• G02F 1/155 - Electrodes

Abstract

A composite window having heat switching and heat storage functions comprises: a pair of first and second glass panes; and a first composite structural layer. The first and second glass panes are arranged so as to face each other. The first composite structural layer is formed on the side of the first glass pane facing the second glass pane, such that visible light is transmitted and infrared emissivity is controlled. In this case, the first composite structural layer includes a first dielectric and a first multilayer graphene stacked on the first dielectric.

IPC Classes  ?

• G02F 1/137 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulatingNon-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
• E06B 9/24 - Screens or other constructions affording protection against light, especially against sunshineSimilar screens for privacy or appearance
• G02B 5/26 - Reflecting filters

Abstract

A smart window that is switchable between a transmission mode and a reflection mode comprises a first layer, a second layer, a third layer, and a fourth layer which are sequentially stacked, wherein an air layer is interposed between the second layer and the third layer, the first to fourth layers and the air layer are transparent in the visible wavelengths and the near-infrared wavelengths of incident sunlight, and the thickness of the air layer is variable.

IPC Classes  ?

• E06B 9/24 - Screens or other constructions affording protection against light, especially against sunshineSimilar screens for privacy or appearance

Abstract

An ultrasound spatial phase modulator according to an embodiment of the present invention comprises: an ultrasound generation unit; a heating layer, which is formed at one side of the ultrasound generation unit so as to transmit ultrasound waves and can selectively radiate heat according to location; and a phase modulation layer, which is formed at one side of the heating layer so as to transmit ultrasound waves, is formed of a phase modulation material having a modulus of elasticity that varies according to temperature, and receives heat through the heating layer so as to selectively radiate heat according to location, thereby changing the wave motion of the ultrasound waves.

IPC Classes  ?

• A61B 8/00 - Diagnosis using ultrasonic, sonic or infrasonic waves
• A61B 8/08 - Clinical applications

Abstract

The present invention relates to a manufacturing method for a dome-shaped display panel, and a dome-shaped display panel, and the manufacturing method for a dome-shaped display panel, according to the present invention, comprises the steps of: lengthening a stretchable display panel by using a dome-shaped jig, the stretchable display panel being larger than the projection surface of the dome-shaped jig; and bringing the stretchable display panel into close contact with the dome-shaped jig by contracting edges of the stretchable display panel.

IPC Classes  ?

• G09F 9/30 - Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
• G09F 19/12 - Advertising or display means not otherwise provided for using special optical effects
• G02B 27/01 - Head-up displays
• H04N 13/332 - Displays for viewing with the aid of special glasses or head-mounted displays [HMD]
• G02F 1/1333 - Constructional arrangements
• G02F 1/13 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulatingNon-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
• H10K 77/10 - Substrates, e.g. flexible substrates
• H10K 59/12 - Active-matrix OLED [AMOLED] displays

Abstract

The present disclosure provides an acoustic metamaterial-based muffler for exhaust noise reduction, including an exhaust flow body that is provided with an inlet through which exhaust gas of an internal combustion engine flows in on one side, and an outlet through which the exhaust gas flows out on the other side, and a flow passage for guiding a movement of the exhaust gas therein; and a plurality of noise reduction units that are sequentially disposed along a discharge direction of the exhaust gas inside the exhaust flow body to reduce noise in a specific frequency band in exhaust noise of the exhaust gas caused by the movement of the exhaust gas on the inside of the exhaust flow body.

IPC Classes  ?

• F01N 1/24 - Silencing apparatus characterised by method of silencing by using sound-absorbing materials

Abstract

The present invention relates to a cathode for a zinc battery. In detail, the cathode for a zinc battery according to an embodiment of the present invention includes: a porous carbon substrate; and hydrated vanadium oxide flakes that have one end embedded in the porous carbon substrate. The cathode for a zinc battery according to the present invention has improved capacity and rate characteristics as well as improved long-term cycling stability, and makes it possible to achieve a flexible zinc battery.

IPC Classes  ?

• H01M 4/48 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
• H01M 4/62 - Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
• H01M 4/1391 - Processes of manufacture of electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
• H01M 10/054 - Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium
• H01M 10/36 - Accumulators not provided for in groups
• H01M 4/02 - Electrodes composed of, or comprising, active material

Abstract

The present invention relates to a support supporting an active material of a secondary battery, and the secondary battery active material support according to the present invention comprises: a porous carbon substrate; and a composite containing a transition metal oxide and a transition metal carbide and located on the surface of the porous carbon substrate. The support according to the present invention can suppress the formation of metal dendrites when the active material is a metal, and can suppress the elution of intermediate products when the intermediate products are generated during charging and discharging.

IPC Classes  ?

• H01M 4/64 - Carriers or collectors
• H01M 4/66 - Selection of materials
• H01M 4/80 - Porous plates, e.g. sintered carriers
• H01M 4/38 - Selection of substances as active materials, active masses, active liquids of elements or alloys
• H01M 4/58 - Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFySelection of substances as active materials, active masses, active liquids of polyanionic structures, e.g. phosphates, silicates or borates
• H01M 4/62 - Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
• H01M 4/13 - Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulatorsProcesses of manufacture thereof
• H01M 10/052 - Li-accumulators

Abstract

The present invention relates to a device for converting a frequency of an electromagnetic wave and, more specifically, to a device for converting an original frequency of an electromagnetic wave into a frequency corresponding to a resonator mode by using a time-varying Fabry-Perot resonator including a time-varying reflective surface of which reflectivity changes with time. A device for converting a frequency of an electromagnetic wave according to an embodiment of the present invention comprises: a time-varying reflective surface on which an electromagnetic wave is incident and of which reflectivity changes with time; and a partially reflective surface which is disposed at a predetermined distance from the time-varying reflective surface, from which an electromagnetic wave having a frequency corresponding to a resonator mode is emitted, and which has a fixed reflectivity for partially reflecting the electromagnetic wave incident through the time-varying reflective surface, wherein the reflectivity of the time-varying reflective surface is smaller than the reflectivity of the partially reflective surface, and after the electromagnetic wave is trapped between the time-varying reflective surface and the partially reflective surface, the reflectivity of the time-varying reflective surface becomes greater than the reflectivity of the partial reflective surface.

IPC Classes  ?

• H01S 3/08 - Construction or shape of optical resonators or components thereof
• G02F 1/35 - Non-linear optics
• G02F 1/355 - Non-linear optics characterised by the materials used

Abstract

An embodiment provides a full transmission device for wide-angle mode conversion of elastic waves, which can implement mode conversion of elastic waves with high energy efficiency in a wide incident angle range by using a single filter. The full transmission device for wide-angle mode conversion of elastic waves, according to this embodiment, comprises: an incident medium through which elastic waves including longitudinal waves and transverse waves are obliquely incident in a preset wide-angle range; a transmission medium through which the elastic waves incident in the wide-angle range through the incident medium are transmitted; and a filter which is interposed between the incident medium and the transmission medium and is formed under a wide-angle mode conversion full transmission condition so that the elastic waves incident on the incident medium in the wide-angle range are fully converted with no reflection and transmitted through the transmission medium.

IPC Classes  ?

• H03H 9/02 - Networks comprising electromechanical or electro-acoustic elementsElectromechanical resonators Details
• G10K 11/16 - Methods or devices for protecting against, or for damping, noise or other acoustic waves in general

Abstract

Disclosed is a measurement device for measuring the height of foreign materials in a pipe. The disclosed measurement device may comprise: an ultrasonic generator disposed in a first area on the outer surface of a pipe through which a fluid passes, thereby generating ultrasonic waves; a first transmitting medium portion disposed between the ultrasonic generator and the first area; a second transmitting medium portion disposed between the first transmitting medium portion and the first area so as to contact the first area; and an ultrasonic transmitting unit comprising a (1-1)th ultrasonic-type converter formed inside the second transmitting medium portion so as to convert the type of ultrasonic waves received from the first transmitting medium portion. In addition, the disclosed measurement device may comprise: an ultrasonic receiver disposed in a second area on the outer surface of the pipe; a first receiving medium portion disposed between the ultrasonic receiver and the second area; a second receiving medium portion disposed between the first receiving medium portion and the second area so as to contact the second area; and an ultrasonic receiving unit comprising a (1-2)th ultrasonic-type converter formed inside the second receiving medium portion so as to convert the type of ultrasonic waves received from the second area.

IPC Classes  ?

• G01N 29/04 - Analysing solids
• G01N 29/34 - Generating the ultrasonic, sonic or infrasonic waves
• G01N 29/36 - Detecting the response signal
• G01N 29/44 - Processing the detected response signal
• G01B 17/02 - Measuring arrangements characterised by the use of infrasonic, sonic, or ultrasonic vibrations for measuring thickness

Abstract

In a large-area transparent reflective panel using nanoclusters and a method for manufacturing same, the transparent reflective panel comprises: a light-transmissive medium; and a plurality of metal clusters formed on the light-transmissive medium. Each of the metal clusters includes unit metal bodies formed on the light-transmissive medium while being spaced apart from each other.

IPC Classes  ?

• G02B 5/02 - Diffusing elementsAfocal elements
• B29C 33/42 - Moulds or coresDetails thereof or accessories therefor characterised by the shape of the moulding surface, e.g. ribs or grooves
• B29C 33/44 - Moulds or coresDetails thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
• B29C 63/02 - Lining or sheathing, i.e. applying preformed layers or sheathings of plasticsApparatus therefor using sheet or web-like material

Abstract

The purpose of the present invention is to steer the angle of emission of sound waves by changing the frequency of sound waves. The technical gist of the present invention is to provide a holographic-based directional audio device capable of sound wave scanning, the device comprising: a sound wave generating means for generating sound waves; a flat plate positioned on one side of the sound wave generating means; and a holographic meta-surface comprising multiple unit cells which comprise multiple grooves formed on the surface of the flat plate, respectively, and which are continuously arranged, thereby emitting the sound waves. The depth of the grooves constituting the holographic meta-surface is determined by a surface admittance calculated on the basis of a cosine function or sine function regarding the sum of a first value and a second value. With reference to a preset angle of emission of the sound waves and the frequency of the sound waves, the first value is a product of the frequency of the sound waves, the surface-based refractive index of the unit cells, and the radius distance from the center of the flat plate to the unit cells, and the second value is a product of the frequency of the sound waves, the position value of the unit cells, and the angle of emission of the sound waves. The surface admittance causes the sound waves to be emitted in the forward direction which is identical to the direction of propagation of surface waves propagating along the holographic meta-surface, or in the backward direction which is opposite to the direction of propagation of the surface waves such that the angle of emission of the sound waves can be steered according to a change in the frequency of the sound waves.

IPC Classes  ?

• H04R 1/32 - Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
• H04R 1/34 - Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
• G03H 1/02 - Holographic processes or apparatus using light, infrared, or ultraviolet waves for obtaining holograms or for obtaining an image from themDetails peculiar thereto Details

Abstract

Provided are a thick film thickness measuring apparatus and method, whereby the limitations on measurement of an ultrasonic signal reflected when measuring the thickness of a thin film by using retroreflection of ultrasonic waves can be overcome. The thin film thickness measuring apparatus comprises an ultrasonic retroreflector that is provided under a test object formed in the form of a thin film and retroreflects ultrasonic waves incident through the test object; an ultrasonic wave incidence portion provided at one side of the test object to allow ultrasonic waves to be incident on one surface of the test object; and a measuring unit which is connected to the ultrasonic incidence portion and measures the arrival time of the ultrasonic waves reflected through the test object.

IPC Classes  ?

• G01B 17/02 - Measuring arrangements characterised by the use of infrasonic, sonic, or ultrasonic vibrations for measuring thickness
• G01N 29/07 - Analysing solids by measuring propagation velocity or propagation time of acoustic waves

Abstract

Proposed are a stretchable display panel device capable of effectively correcting an image according to a strain ratio and a method of correcting the image. The stretchable display panel device includes a stretchable display panel, a measurement unit, and a correction unit. The measurement unit measures the strain ratio of the stretchable display panel. The correction unit corrects the image on the stretchable display panel on the basis of the strain ratio. The expandable and contractible display panel overall has a uniform strain ratio and has a negative effective Poisson’s ratio. The strain ratio is a strain ratio in a first direction.

IPC Classes  ?

• G09G 3/00 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
• G01L 1/22 - Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluidsMeasuring force or stress, in general by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges

Abstract

The present invention relates to a metal-organic framework and an energy storage system having the same, and more specifically, to an energy storage system that is capable of providing excellent electrical conductivity and electrochemical capacity properties, especially excellent electrochemical performance at low temperatures, by means of a novel one-dimensional metal-organic framework having thianthrene-based organic ligands.

IPC Classes  ?

• C07F 9/6553 - Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom having sulfur atoms, with or without selenium or tellurium atoms, as the only ring hetero atoms
• H01M 4/13 - Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulatorsProcesses of manufacture thereof
• C07F 15/04 - Nickel compounds
• H01M 4/38 - Selection of substances as active materials, active masses, active liquids of elements or alloys
• H01M 4/60 - Selection of substances as active materials, active masses, active liquids of organic compounds

Abstract

An embodiment of the present invention provides a stretchable substrate that may be significantly stretchable to be deformed but have a low rate of breakage. Here, the stretchable substrate includes a cell, a cut portion, and an extended cut line. A plurality of cells are formed in the substrate body, and a device is mounted thereon. The cut portion is formed in the substrate body to increase a distance between the cells when the substrate body is stretched. The extended cutting line is formed to extend from an end portion of the cut portion and bent inwardly of the cell so that corners of the cells are rounded.

IPC Classes  ?

• G09F 9/30 - Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements

Abstract

The present invention provides a mode conversion reflector provided on an edge surface of an elastic medium, capable of mode-converting an incident ultrasonic wave with high efficiency and simultaneously reflecting the wave in a desired direction. The mode conversion reflector according to the embodiment includes an elastic medium; and a reflective layer formed of a non-planar structure on an edge surface of the elastic medium, in which an interference phenomenon caused by diffraction of wave occurs by the reflective layer, so that an ultrasonic wave incident through the elastic medium is mode-converted and reflected in a predetermined direction.

IPC Classes  ?

• G01N 29/22 - Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic wavesVisualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object Details
• G01F 1/667 - Arrangements of transducers for ultrasonic flowmetersCircuits for operating ultrasonic flowmeters

Abstract

An embodiment of the present invention provides a low frequency broadband absorber which may be realized to have a thin thickness and able to absorb broadband low frequencies. Here, the low frequency broadband absorber includes a reflection layer, a first dielectric layer, a first absorption layer, a second dielectric layer, and a second absorption layer. The first dielectric layer is provided on one surface of the reflection layer. The first absorption layer is provided on one surface of the first dielectric layer and causes a first frequency band of an electromagnetic wave to resonate so as to be lost. The second dielectric layer is provided on one surface of the first absorption layer. In addition, the second absorption layer is provided on one surface of the second dielectric layer and causes a second frequency band of an electromagnetic wave to resonate so as to be lost. Here, a first thickness of the first dielectric layer is smaller than a second thickness of the second dielectric layer, and the first frequency band is greater than the second frequency band.

IPC Classes  ?

• H01Q 17/00 - Devices for absorbing waves radiated from an antenna Combinations of such devices with active antenna elements or systems

Abstract

Disclosed is a measurement apparatus for measuring the height of debris in a pipe. The disclosed measurement apparatus may comprise: an ultrasonic wave transmission unit arranged in a first area of the outer surface of a pipe through which fluid passes, and including an ultrasonic wave generator which generates ultrasonic waves, and a transmission medium portion which is arranged between the ultrasonic wave generator and the first area and transmits the ultrasonic waves to the first area; an ultrasonic wave reception unit arranged in a second area on the outer surface of the pipe, and including an ultrasonic wave receiver and a reception medium portion arranged between the ultrasonic wave receiver and the second area, wherein the reception medium portion transmits, to the ultrasonic wave receiver, the ultrasonic waves that are transmitted from the first area to the second area through the inside of the pipe, and the ultrasonic wave receiver receives the ultrasonic waves transmitted through the reception medium portion; and a signal measurer which is connected to the ultrasonic wave receiver and measures a signal of the ultrasonic waves received by the ultrasonic wave receiver, and a signal corresponding to the signal of the ultrasonic waves. The transmission medium portion may transmit transverse wave-type ultrasonic waves to the first area. The reception medium portion may receive the transverse wave-type ultrasonic waves from the second area.

IPC Classes  ?

• G01B 17/02 - Measuring arrangements characterised by the use of infrasonic, sonic, or ultrasonic vibrations for measuring thickness
• G01N 29/04 - Analysing solids
• G01N 29/24 - Probes
• G01N 29/34 - Generating the ultrasonic, sonic or infrasonic waves
• G01N 29/36 - Detecting the response signal

Abstract

The present invention provides a Joule heating-based roll-to-roll graphene manufacturing method and a graphene manufacturing apparatus, in which, by suppressing the stress concentration and deformation generated in a catalytic metal passing between a first roller part and a second roller part, stable roll-to-roll transfer for a synthesis area arranged so as to extend in a downward direction can be ensured for temperature compensation, and the synthesis area is transferred in a state of maintaining a concave shape toward a temperature compensation area without a cross section distorted in the longitudinal direction. To this end, in the present invention, a Joule heating-based roll-to-roll graphene manufacturing apparatus including a first roller part and a second roller part for Joule-heating a catalytic metal is used, and, for temperature compensation, while passing between the first roller part and the second roller part, provided is a synthesis area arranged so as to extend in a downward direction due to its own weight, wherein the synthesis area is transferred in a state of maintaining a concave shape toward a temperature compensation area without a cross section distorted in the longitudinal direction.

IPC Classes  ?

• C01B 32/184 - Preparation
• B01J 19/08 - Processes employing the direct application of electric or wave energy, or particle radiationApparatus therefor

Abstract

An embodiment of the present invention provides an ultrathin-type flexible transparent absorber which has a thin thickness and an excellent absorption performance in the 5G millimeter-wave band in addition to being flexible and transparent. Here, the ultrathin-type flexible transparent absorber comprises a dielectric transparent flexible base substrate, a transparent flexible reflective layer, and an absorption layer. The flexible reflective layer is provided at one surface of the flexible base substrate and reflects incident waves passing through the flexible base substrate. The absorption layer is provided at the other surface of the flexible base substrate, has a plurality of patterns spaced apart from each other at an interval of a first slit, and absorbs reflected waves reflected by the flexible reflective layer. The patterns have at least a kind of polygonal shape and are formed so that the inside thereof is completely filled, and the absorption layer is a graphene layer.

IPC Classes  ?

• H05K 9/00 - Screening of apparatus or components against electric or magnetic fields

Abstract

An element inspection method according to an embodiment of the present invention comprises the steps of: photographing a substrate that has undergone an element transfer process so as to acquire learning images of elements deemed to operate normally and elements deemed to operate abnormally; learning the learning images by artificial intelligence; determining that a test image which has been acquired at a first timepoint, and which includes no learning image, corresponds to an element deemed to operate normally or as an element deemed to operate abnormally according to standards that have been learned by artificial intelligence, and calculating a first total repair cost necessary to repair elements; and determining that an acquired image, which is acquired from a substrate that has newly undergone an element transfer process at a second timepoint following the first timepoint, corresponds to an element deemed to operate normally or as an element deemed to operate abnormally according to standards that have been learned by artificial intelligence. In the learning step, learning proceeds such that a second total repair cost necessary to repair elements is determined to be lower than the first total repair cost according to the determination in the determining step.

IPC Classes  ?

• G01N 21/88 - Investigating the presence of flaws, defects or contamination
• G01N 21/956 - Inspecting patterns on the surface of objects
• G06N 3/08 - Learning methods
• G06Q 10/00 - AdministrationManagement
• G06Q 30/02 - MarketingPrice estimation or determinationFundraising

Abstract

An embodiment of the present invention provides: a beam splitter using a multi-refractive index layer, which allows infrared light to transmit therethrough and visible light to be reflected thereby, and thus enables high-magnification measurement; and a defective element detection device comprising same. The beam splitter using a multi-refractive index layer comprises a multi-refractive index layer and a base layer. The multi-refractive index layer reflects a first light and transmits a second light having a longer wavelength than the first light. The base layer is provided on one surface of the multi-refractive index layer and transmits the second light passing through the multi-refractive index layer. The multi-refractive index layer comprises a first refractive index layer having a first refractive index and a second refractive index layer having a second refractive index lower than the first refractive index, and the first refractive index layer and the second refractive index layer are disposed alternately and repeatedly. The wavelength of the second light is ten times or more than the wavelength of the first light.

IPC Classes  ?

• G02B 27/12 - Beam splitting or combining systems operating by refraction only
• G02B 27/10 - Beam splitting or combining systems

Abstract

A variable-structure metasurface antenna is disclosed. The variable-structure metasurface antenna comprises: a feeding unit for receiving electromagnetic waves and propagating in a concentric wave form; and a variable metasurface unit positioned on an upper end of the feeding unit, having a plurality of unit radiators, and radiating the electromagnetic waves transmitted from the feeding unit so as to have different phases and polarization components according to a combination of the unit radiators activated from among the plurality of unit radiators.

IPC Classes  ?

• H01Q 15/00 - Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
• H01Q 1/38 - Structural form of radiating elements, e.g. cone, spiral, umbrella formed by a conductive layer on an insulating support
• H01Q 1/46 - Electric supply lines or communication lines

Abstract

An embodiment of the present invention provides a transparent heating structure which has high transmittance in a visible ray band while allowing transmission of a 5G communication band, is capable of heating, and allows transmission of a communication frequency band. Herein, the structure comprises a substrate and a pattern part. The pattern part is provided at the substrate, transmits the communication frequency band, and is heated. The pattern part has a plurality of cells provided overall at the substrate, and each of the cells has a plurality of unit lattices having slots formed therein.

IPC Classes  ?

• H01Q 15/00 - Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
• H01Q 1/38 - Structural form of radiating elements, e.g. cone, spiral, umbrella formed by a conductive layer on an insulating support

Abstract

Disclosed are a volumetric display and a head-mounted display comprising same, the volumetric display comprising self-luminous display panels and shutter panels. The self-luminous display panels display a two-dimensional image forward and are spaced apart in a front-back direction. The shutter panels are disposed between the self-luminous display panels which are spaced apart from each other. Pixels of the self-luminous display panels and pixels of the shutter panels are disposed to correspond to each other, and the shutter panels adjust, for each pixel, the transmittance of light emitted from a plurality of pixels of the self-luminous display panels disposed behind the shutter panels.

IPC Classes  ?

• G02B 30/33 - Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer’s left and right eyes of the autostereoscopic type involving directional light or back-light sources
• G02B 30/25 - Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer’s left and right eyes of the stereoscopic type using polarisation techniques
• H04N 13/388 - Volumetric displays, i.e. systems where the image is built up from picture elements distributed through a volume
• G02F 1/1335 - Structural association of cells with optical devices, e.g. polarisers or reflectors

Abstract

Disclosed herein is a meta-muffler for reducing broadband noise. The meta-muffler includes: a flow pipe through which a fluid flows; an outer barrel disposed outside the flow pipe to be spaced apart from the flow pipe; and multiple metastructures arranged in a flow direction of the fluid and each comprising an opening opened parallel to the flow direction of the fluid, a resonance chamber disposed between the flow pipe and the outer barrel and communicating with the flow pipe through the opening, and a neck adjustment member extending from the outer barrel toward the flow pipe to be spaced apart from the opening in the flow direction of the fluid. The meta-muffler can increase transmission loss of noise flowing through the flow pipe through maximization of energy loss of sound waves entering the resonance chamber of the metastructure and can effectively attenuate noise over a wide band ranging from low frequencies to high frequencies.

IPC Classes  ?

• F01N 1/02 - Silencing apparatus characterised by method of silencing by using resonance

Abstract

Provided is an active radiation control window in which the total transmittance of visible light can be maintained and the total reflectance of near-infrared light can be controlled. The active radiation control window comprises a control layer, a filter layer, and a resonance layer. The control layer adjusts transmittance or absorption of near-infrared light according to an applied voltage. The filter layer is formed below the control layer, and transmits visible light and reflects near-infrared light. The resonance layer is formed between the control layer and the filter layer and is made of a dielectric. When the applied voltage is changed, the total transmittance of visible light is maintained, and the total reflectance of near-infrared light is controlled.

IPC Classes  ?

• G02F 1/03 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulatingNon-linear optics for the control of the intensity, phase, polarisation or colour based on ceramics or electro-optical crystals, e.g. exhibiting Pockels or Kerr effect

Abstract

A sound wave delivery structure of the present invention comprises unit structure cells each formed to have a cubic shape and comprising a column portion formed on a region corresponding to sides, and a space portion formed in an internal region surrounded by the column portion. There are a plurality of unit structure cells which are successively arranged in a first direction, in which sound waves are delivered, and a second direction crossing the first direction.

IPC Classes  ?

• B06B 1/06 - Processes or apparatus for generating mechanical vibrations of infrasonic, sonic or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction

Abstract

Embodiments of the present invention provide a 5G band transmission body having high 5G band transmittance and low reflectivity, and a window assembly comprising same. The 5G band transmission body comprises a base substrate and a pattern part. The pattern part is provided on one surface of the base substrate and passes a 5G communication frequency band. The pattern part has a conductive pattern which is formed by providing a conductive material on a plurality of virtual grid cells arrayed in the horizontal and vertical directions. The pattern part has a plurality of unit areas divided by a virtual vertical line and horizontal line which meet at a right angle in the center of the pattern part and a pair of virtual diagonal lines intersecting each other in the center of the pattern part and passing the respective corners of the pattern part. The conductive patterns formed in unit areas adjacent to each other from among the plurality of unit areas form symmetry with each other with respect to the vertical line, the horizontal line, or the diagonal lines, respectively.

IPC Classes  ?

• H01Q 1/32 - Adaptation for use in or on road or rail vehicles
• H01Q 5/25 - Ultra-wideband [UWB] systems, e.g. multiple resonance systemsPulse systems
• H01Q 1/38 - Structural form of radiating elements, e.g. cone, spiral, umbrella formed by a conductive layer on an insulating support
• H01Q 5/20 - Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands

Abstract

An apparatus for repairing elements, includes: a bonding material transfer stamp transferring a new bonding material to a repair area on a substrate, the repair area having a defective element or a residual bonding material removed therefrom; and an element transfer stamp transferring a new element to the new bonding material, wherein the element transfer stamp comprises a load control portion for elements, the load control portion being bent and deformed upon receiving pressing force such that a zero-stiffness load smaller than a critical damage load of the new element is applied to the new element.

IPC Classes  ?

• H05K 13/04 - Mounting of components
• H05K 3/34 - Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
• B23K 37/04 - Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass for holding or positioning work

Abstract

The present invention relates to a soundwave focusing transducer. According to one embodiment, the soundwave transducer that focuses soundwaves incident from a soundwave exciter and emits the soundwaves to the outside comprises: a piezoelectric element unit including a circular piezoelectric element and a plurality of annular piezoelectric elements concentrically arranged around a center point of the circular piezoelectric element to be spaced apart from each other; a power application unit for applying power to the piezoelectric element unit; and an electrode unit electrically connected to the piezoelectric element unit and applying a voltage to the piezoelectric element unit from the power application unit. The electrode unit alternately applies voltages of different polarities from the circular piezoelectric element toward the outer periphery, and the piezoelectric element unit alternately generates soundwaves of different phases from the circular piezoelectric element toward the outer periphery.

IPC Classes  ?

• H04R 17/00 - Piezoelectric transducersElectrostrictive transducers
• B06B 1/06 - Processes or apparatus for generating mechanical vibrations of infrasonic, sonic or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction

Abstract

A sound insulation plate includes a patterned frame and an elastic membrane, wherein the patterned frame includes a central pattern region and multiple peripheral pattern regions arranged around the central pattern region, the multiple peripheral pattern regions being separated from the central pattern region by a separation bar, and wherein the elastic membrane is mounted on the patterned frame to block passage of air and converts airborne sound waves into elastic waves.

IPC Classes  ?

• G10K 11/172 - Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using resonance effects
• E04B 1/86 - Sound-absorbing elements slab-shaped
• E04B 1/84 - Sound-absorbing elements

Abstract

Disclosed herein are a metastructure having a zero elastic modulus zone, which can experience constant stress in a predetermined strain zone, and a method for designing the same. The metastructure includes a first unit and a second unit, wherein the first unit has a structure capable of buckling and has a stress-strain relation having a zone corresponding to a negative elastic modulus, the second unit is disposed adjacent to the first unit and has a stress-strain relation having a zone corresponding to a positive elastic modulus, and the metastructure has zero elastic modulus in a predetermined target strain zone through synthesis of the negative elastic modulus of the first unit with the positive elastic modulus of the second unit.

IPC Classes  ?

• B41F 16/00 - Transfer printing apparatus
• F16F 1/00 - Springs

Abstract

This apparatus for measuring the amount of cylindrical battery deformation in a charge-discharge test comprises a seat part, a measuring part, a driving part, and a sensor part. The cylindrical battery is fixed to the seat part so as to stand in the axial direction. The measuring part surrounds the circumference of the cylindrical battery. The driving part applies tension to one end of the measuring part, thereby generating a tensile load on the measuring part. The sensor part fixes the other end of the measuring part and measures changes in the tensile load according to changes in the circumference of the cylindrical battery.

IPC Classes  ?

• H01M 10/42 - Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
• H01M 10/04 - Construction or manufacture in general
• G01B 7/16 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
• G01L 1/22 - Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluidsMeasuring force or stress, in general by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges

Abstract

Embodiments of the present invention provide a method for designing a transparent film structure having a simplified process and thus having low manufacturing cost and enabling implementation over a large area, an apparatus for manufacturing the transparent film structure, the transparent film structure manufactured by using same, and an electromagnetic wave absorbing structure. The method for designing the transparent film structure comprises the steps of: selecting a material for a dielectric substrate; selecting a material for a final conductive pattern provided on the front surface of the dielectric substrate; determining a target transmittance differential between the dielectric substrate and the final conductive pattern such that flickering resulting from the transmittance differential between the dielectric substrate and the final conductive pattern is not perceived with the naked eye; and setting a surface area ratio of the final conductive pattern relative to the dielectric substrate such that the differential between the transmittance of the dielectric substrate and the transmittance of the final conductive pattern is smaller than the target transmittance differential.

IPC Classes  ?

• H01B 5/14 - Non-insulated conductors or conductive bodies characterised by their form comprising conductive layers or films on insulating-supports
• H01B 1/22 - Conductive material dispersed in non-conductive organic material the conductive material comprising metals or alloys
• H01Q 17/00 - Devices for absorbing waves radiated from an antenna Combinations of such devices with active antenna elements or systems

Abstract

An exemplary embodiment provides matching media for perfect transmission of ultrasonic waves by easily implementing perfect transmission of ultrasonic waves at a boundary between different elastic media through a matching layer provided at the boundary between the different elastic media and proposing a matching layer having a single layer structure of a simple single pattern that is easily processed, thereby easily implementing effects such as miniaturization of the matching layer, reduction of manufacturing cost, and improvement of manufacturability. The matching medium for perfect transmission of ultrasonic waves according to an exemplary embodiment includes a matching layer that is provided with a single pattern under a perfect transmission condition at a boundary between an incident medium and a transmission medium to perfectly transmit the ultrasonic waves incident from the incident medium to the transmission medium, wherein the matching layer forms a single pattern by controlling a plurality of predetermined design variables.

IPC Classes  ?

• G10K 11/02 - Mechanical acoustic impedancesImpedance matching, e.g. by hornsAcoustic resonators
• G01N 29/28 - Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic wavesVisualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object Details providing acoustic coupling

Abstract

In a meta sheet having a coiled micro-hinge and a stretchable element including the same, the meta sheet includes a sheet part and multiple pattern parts. The sheet part evenly extends. The multiple pattern parts are formed on the sheet part, compart the sheet part into multiple sheet regions, and have the same shape. Each of the pattern parts includes multiple patterns that extend in the same pattern from a central point, and the patterns of each pattern part are mutually connected to patterns of neighboring pattern parts adjacent to the corresponding pattern part.

IPC Classes  ?

• H05K 3/46 - Manufacturing multi-layer circuits
• H01L 51/00 - Solid state devices using organic materials as the active part, or using a combination of organic materials with other materials as the active part; Processes or apparatus specially adapted for the manufacture or treatment of such devices, or of parts thereof

Abstract

An embodiment of the present invention provides an element transferring method that may increase a yield of transferring an element, and an electronic panel manufacturing method using the same. The element transferring method includes: preparing a carrier film in which a first surface of an element on which a terminal is formed is adhered to an adhesive surface; providing a cover adhesive layer on the adhesive surface so that the second surface of the element that is opposite to the first surface and where the terminal is not formed is covered; transferring the element to the target substrate by adhering the cover adhesive layer to the target substrate while the second surface is facing the target substrate; and separating the carrier film from the element, wherein in transferring the element, the carrier film is pressed so that the surface of the cover adhesive layer is flat at the same height as the terminal.

IPC Classes  ?

• H01L 21/56 - Encapsulations, e.g. encapsulating layers, coatings
• H01L 27/15 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components with at least one potential-jump barrier or surface barrier, specially adapted for light emission
• H01L 25/075 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices all the devices being of a type provided for in a single subclass of subclasses , , , , or , e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group
• H01L 33/52 - Encapsulations

Abstract

Disclosed herein are a non-rigid pad for device transfer, which allows uniform contact pressure to be applied between multiple devices and a target substrate to which the devices are to be transferred, a method of manufacturing the same, and a non-rigid pad group for device transfer including the same. The non-rigid pad includes: a base plate; and multiple pillars each protruding from one surface of the base plate with one end thereof connected to the one surface of the base plate, the pillars being bent and deformed upon application of external force, wherein the non-rigid pad is disposed between a transfer film to which multiple devices to be transferred to a target substrate are adhesively attached and a pressing unit providing pressing force to transfer the multiple devices to the target substrate, the non-rigid pad being bent and deformed upon application of pressing force by the pressing unit to allow uniform contact pressure to be applied between the multiple devices and the target substrate.

IPC Classes  ?

• H01L 21/67 - Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereofApparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components

Abstract

n+1nn (wherein, n is 1, 2, or 3; M is an early transition metal belonging to groups 3 to 7 of the periodic table; and X is carbon, nitrogen, or CN).

IPC Classes  ?

• C01B 32/921 - Titanium carbide
• C23C 16/06 - Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of metallic material
• C23C 16/04 - Coating on selected surface areas, e.g. using masks
• H01L 35/22 - Selection of the material for the legs of the junction using inorganic compositions comprising compounds containing boron, carbon, oxygen, or nitrogen
• H01L 35/02 - SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR - Details thereof - Details

Abstract

A holographic-based directional sound device is provided, the device including: a sound wave generating means generating a sound wave; and a flat plate configured to have the sound wave generating means installed at the center so as to radiate the sound wave to the outside through a surface, and to be composed of a plurality of unit cells, in which at least one groove is formed on a surface of the unit cell, and a radiation angle of the sound wave is determined according to a depth of the groove with respect to the unit cell, wherein the depth of the groove is determined by an individual surface admittance calculated by a cosine function or a sine function of the sum of a first value and a second value on the basis of a preset radiation angle of the sound wave and a preset frequency of the sound wave.

IPC Classes  ?

• H04R 1/32 - Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
• H04R 1/28 - Transducer mountings or enclosures designed for specific frequency responseTransducer enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
• H04R 1/34 - Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
• G10K 11/28 - Sound-focusing or directing, e.g. scanning using reflection, e.g. parabolic reflectors
• G10K 11/30 - Sound-focusing or directing, e.g. scanning using refraction, e.g. acoustic lenses

Abstract

An infrared adaptive transparent camouflage film comprises a substrate part, a graphene layer, an electrode layer, and an ion gel layer. The substrate part comprises a dielectric. The graphene layer is disposed on the substrate part, and is stacked in a plurality of layers. The electrode layer is disposed on the substrate part to be spaced apart from the graphene layer. The ion gel layer is formed on or between the graphene layer and the electrode layer, and the graphene layer is electrically doped.

IPC Classes  ?

• G02F 1/01 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulatingNon-linear optics for the control of the intensity, phase, polarisation or colour
• G02F 1/15 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulatingNon-linear optics for the control of the intensity, phase, polarisation or colour based on an electrochromic effect
• C01B 32/20 - Graphite

Abstract

A transparent stealth structure includes: a first transparent film structure stacked on a front surface of a transparent base, the first transparent film structure causing energy loss of incident electromagnetic waves having a target frequency to change a phase of transmitted electromagnetic waves propagating toward the transparent base; and a second transparent film structure stacked on a back surface of a transparent base, the second transparent film structure reflecting the transmitted electromagnetic waves having passed through the transparent base while adjusting a phase of reflected waves propagating toward the first transparent film structure, wherein the first transparent film structure includes a first front transparent conductive pattern having a first sheet resistance and a second front transparent conductive pattern filling a region, and the second transparent film structure includes a first rear transparent conductive pattern having a third sheet resistance and a second rear transparent conductive pattern filling a region.

IPC Classes  ?

• H01Q 17/00 - Devices for absorbing waves radiated from an antenna Combinations of such devices with active antenna elements or systems
• H01Q 15/00 - Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices

Abstract

A fluid silencer includes: an expansion pipe disposed on a pipe through which a fluid containing noise sources flows and having an accommodation space therein; a viscous fluid received in the accommodation space; a noise introducing member disposed between the pipe and the expansion pipe to seal the accommodation space and allowing the noise sources to be introduced into the accommodation space therethrough; at least one partition member disposed in the accommodation space and dividing the accommodation space in a flow direction of the fluid; multiple baffle members disposed on one surface of the partition member and forming multiple sound absorbing spaces into which the noise sources introduced into the accommodation space are dispersedly introduced; and an elastic member disposed between the partition member and the baffle members and contracted/expanded by the viscous fluid entering/leaving the sound absorbing spaces as the noise sources are introduced into the sound absorbing spaces.

IPC Classes  ?

• F16L 55/033 - Noise absorbers

Abstract

An embodiment of the present invention provides a transfer film that may be used for both a picking process and a placing process of an element, a transfer method using the transfer film, and an electronic product manufactured using the same. Here, the transfer film according to an embodiment of the present invention includes a base part, an adhesion part, and a first protrusion part. The adhesion part is provided on one surface of the base part, and at least part of the first protrusion part is formed and protruded on one surface of the base part to be accommodated inside the adhesion part, and the thickness increases toward the first direction parallel to the surface of the base part. The first protrusion part is partitioned into a first region including a relatively thick portion of the first protrusion part and a second region including a relatively thin first protrusion part and having weaker adhesive force than the first region, and the element is picked while the first region is lifted first in the picking process, while the element is placed while the second region is lifted first in the placing process.

IPC Classes  ?

• B65G 47/90 - Devices for picking-up and depositing articles or materials
• B25J 15/00 - Gripping heads

Abstract

In a wave focusing device and a wave emitting device having the wave focusing device, the wave focusing device has a plurality of filters and focuses a wave by a phase overlap. The plurality of filters includes a first filter formed on a substrate, a second filter formed on the substrate and overlapping with the first filter in a first area, and a third filter formed on the substrate and overlapping with the second filter in a second area. A size of the first area is substantially same as that of the second area. A first portion of the second filter in the first area is inverted to a second portion of the second filter in the second area, with respect to a first axis. A wave passing through the wave focusing device is focused at a center of each of the first, second and third filters.

IPC Classes  ?

• G10K 11/30 - Sound-focusing or directing, e.g. scanning using refraction, e.g. acoustic lenses
• A61B 8/00 - Diagnosis using ultrasonic, sonic or infrasonic waves
• G01N 29/22 - Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic wavesVisualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object Details

Abstract

In a photocatalytic facial mask and a method for manufacturing the photocatalytic facial mask, the facial mask includes an inner layer, an outer layer, and a functional filter layer. The functional filter layer is disposed between the inner layer and the outer layer. The functional filter layer includes a photoactive layer, the photoactive layer includes a photocatalytic fiber having a core-shell structure, and the core-shell structure includes a core having a polymer fiber and a shell having a photocatalyst disposed at the core.

IPC Classes  ?

• A61L 9/20 - Ultraviolet radiation
• A41D 13/11 - Protective face masks, e.g. for surgical use, or for use in foul atmospheres
• A62B 23/02 - Filters for breathing-protection purposes for respirators

Abstract

The present disclosure relates to an ultrasonic transmission apparatus and a wave control method, and more particularly, to an ultrasonic transmission apparatus and a wave control method which enable an ultrasonic wave to transmit through an obstacle.

IPC Classes  ?

• G01N 29/34 - Generating the ultrasonic, sonic or infrasonic waves
• G01N 29/04 - Analysing solids

Abstract

Disclosed herein is an acoustic metamaterial structure which can effectively reduce noise in a specific frequency range through formation of an acoustic bandgap, wherein the specific frequency range is determined by a periodic structure formed by an array of multiple unit cells. The acoustic metamaterial structure includes multiple first unit cells each including a first space having a first cross-sectional area and a second space disposed downstream of the first space in a flow direction of fluid to communicate with the first space, the second space having a second cross-sectional area larger than the first cross-sectional area, wherein the acoustic metamaterial structure reduces noise in a specific frequency range through formation of an acoustic bandgap, the specific frequency range being determined by a periodic structure formed by an array of the first space and the second space.

IPC Classes  ?

• G10K 11/162 - Selection of materials
• G10K 11/16 - Methods or devices for protecting against, or for damping, noise or other acoustic waves in general

Abstract

Provided are a device and method for designing a material using deep learning. The method includes training a decoder which derives wave properties from given information on a material in advance, training an autoencoder including the decoder and an encoder which will be trained to derive information on a material from given wave properties, and inputting targeted wave properties to the trained encoder to acquire information on a material satisfying the input wave properties.

IPC Classes  ?

• G16C 60/00 - Computational materials science, i.e. ICT specially adapted for investigating the physical or chemical properties of materials or phenomena associated with their design, synthesis, processing, characterisation or utilisation
• G06N 3/08 - Learning methods
• G06N 3/04 - Architecture, e.g. interconnection topology
• G06V 10/145 - Illumination specially adapted for pattern recognition, e.g. using gratings

Abstract

Disclosed is an ultrasonic wave transmission structure which is provided on a path of ultrasonic waves to amplify incident ultrasonic waves. The ultrasonic wave transmission structure includes: multiple rings each provided with a body portion having a different radius from other body portions and spaced apart from another body portion adjacent thereto and a slit disposed between adjacent body portions; and a membrane disposed in the multiple rings, wherein the mass of the membrane is adjusted to vary a resonant frequency in multiple sub-membrane regions.

IPC Classes  ?

• B06B 3/02 - Processes or apparatus specially adapted for transmitting mechanical vibrations of infrasonic, sonic or ultrasonic frequency involving a change of amplitude
• B06B 3/04 - Processes or apparatus specially adapted for transmitting mechanical vibrations of infrasonic, sonic or ultrasonic frequency involving focusing or reflecting

Abstract

A cover unit includes: a body to which an ultrasound generator adapted to generate ultrasound is coupled; first slits disposed at a lower portion of the body in the form of multiple rings having different radii and spaced apart from each other, the first slits having a first width; second slits depressed from an upper surface of the body to communicate with the first slits and having a second width smaller than the first width; third slits depressed from the upper surface of the body and each disposed between adjacent second slits, the third slits having a third width smaller than the first width; a bottom formed under the first slits; a first sidewall formed between adjacent first slits; and a second sidewall formed between the second slit and the third slit.

IPC Classes  ?

• G10K 11/00 - Methods or devices for transmitting, conducting or directing sound in generalMethods or devices for protecting against, or for damping, noise or other acoustic waves in general
• G01N 29/24 - Probes
• G01N 29/28 - Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic wavesVisualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object Details providing acoustic coupling

Abstract

A carrier substrate includes a base layer, an antireflection layer, and an energy absorption layer, wherein the antireflection layer is formed on one surface of the base layer and allows an elastic wave generated by a first laser beam transmitted through an element adhesively bonded to the antireflection layer to be transmitted through the base layer without being reflected towards the element, the first laser beam being applied to the element through a source substrate of the element, and the energy absorption layer is formed between the base layer and the antireflection layer to be aligned with the element, and evaporates upon energy absorption.

IPC Classes  ?

• H01L 21/78 - Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices
• B23K 26/40 - Removing material taking account of the properties of the material involved
• B23K 26/50 - Working by transmitting the laser beam through or within the workpiece
• B23K 26/18 - Working by laser beam, e.g. welding, cutting or boring using absorbing layers on the workpiece, e.g. for marking or protecting purposes
• B23K 26/20 - Bonding

Abstract

The present invention relates to a soundproof panel comprising a pattern frame and an elastic membrane. The pattern frame comprises a central pattern area, and a plurality of peripheral pattern areas which are separated from the central pattern area by separating bars and are arranged around the central pattern area. The elastic membrane is installed to block an air proceeding path, converts a soundwave of the air into an elastic wave, and is mounted on the pattern frame. The displacement of the elastic membrane in the central pattern area and the displacement of the elastic membrane in the peripheral pattern areas are opposite to each other with respect to a resonant frequency of the soundproof panel.

IPC Classes  ?

• G10K 11/172 - Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using resonance effects
• E04B 1/82 - Heat, sound or noise insulation, absorption, or reflectionOther building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only

Abstract

The present invention relates to a device for converting a frequency of an electromagnetic wave and, more specifically, to a device for converting an original frequency of an electromagnetic wave into a frequency corresponding to a resonator mode by using a time-varying Fabry-Perot resonator including a time-varying reflective surface of which reflectivity changes with time. A device for converting a frequency of an electromagnetic wave according to an embodiment of the present invention comprises: a time-varying reflective surface on which an electromagnetic wave is incident and of which reflectivity changes with time; and a partially reflective surface which is disposed at a predetermined distance from the time-varying reflective surface, from which an electromagnetic wave having a frequency corresponding to a resonator mode is emitted, and which has a fixed reflectivity for partially reflecting the electromagnetic wave incident through the time-varying reflective surface, wherein the reflectivity of the time-varying reflective surface is smaller than the reflectivity of the partially reflective surface, and after the electromagnetic wave is trapped between the time-varying reflective surface and the partially reflective surface, the reflectivity of the time-varying reflective surface becomes greater than the reflectivity of the partial reflective surface.

IPC Classes  ?

• H01S 3/08 - Construction or shape of optical resonators or components thereof

Abstract

Disclosed is a hybrid composite comprising a metal-organic framework (MOF) and a two-dimensional sheet. The hybrid composite has high porosity and excellent conductivity, and thus can be used in an electrode of a super capacitor or a secondary cell to improve the energy density and output characteristics and the like thereof.

IPC Classes  ?

• H01G 11/26 - Electrodes characterised by their structure, e.g. multi-layered, porosity or surface features
• C07F 15/04 - Nickel compounds
• B01J 31/16 - Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes
• H01M 4/36 - Selection of substances as active materials, active masses, active liquids
• H01M 4/48 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
• H01M 4/58 - Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFySelection of substances as active materials, active masses, active liquids of polyanionic structures, e.g. phosphates, silicates or borates
• H01M 4/62 - Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
• H01G 11/30 - Electrodes characterised by their material

Abstract

One embodiment of the present invention provides: a stretchable display panel device capable of effectively correcting an image according to a strain rate; and an image correction method therefor. The stretchable display panel device comprises a stretchable display panel unit, a measurement unit, and a correction unit. The measurement unit measures the strain rate of the stretchable display panel unit. The correction unit corrects an image of the stretchable display panel unit on the basis of the strain rate. The strain rate is uniform throughout the whole stretchable display panel unit, the stretchable display panel unit has a negative effective Poisson's ratio, and the strain rate is a first direction strain rate.

IPC Classes  ?

• G09G 5/22 - Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of individual characters or indicia using display control signals derived from coded signals representing the characters or indicia with a character-code memory
• H04N 5/64 - Constructional details of receivers, e.g. cabinets or dust covers

Abstract

Disclosed are: a method for preparing a hybrid composite containing lithium titanate (LTO) and a carbon material and prepared through a reduction reaction of a Ti-based metal-organic framework (MOF); and a hybrid composite obtained by the preparation method. The hybrid composite has high porosity and excellent electrical conductivity, so that when used for an electrode for a super-capacitor, a secondary battery, or the like, the hybrid composite can improve energy density, output characteristics, and the like of the device.

IPC Classes  ?

• C01G 23/00 - Compounds of titanium
• C01B 32/05 - Preparation or purification of carbon not covered by groups , , ,
• C07F 7/28 - Titanium compounds
• H01G 11/32 - Carbon-based
• H01M 4/36 - Selection of substances as active materials, active masses, active liquids
• H01M 4/485 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy
• H01M 4/583 - Carbonaceous material, e.g. graphite-intercalation compounds or CFx
• H01M 4/62 - Selection of inactive substances as ingredients for active masses, e.g. binders, fillers

Abstract

The present invention provides a meta-muffler which is capable of increasing a transmission loss of the noise flowing in a flow tube by maximizing a loss in sound energy of the noise introduced in a resonance chamber due to a stealth wing structure that can be acoustically stealthy like wings of an owl. To this end, the present invention is characterized in comprising: a flow tube in which a fluid flows; an outer shell which is arranged outside the flow tube and is spaced apart from the flow tube; a barrier wall extending from the flow tube to the outer shell; a blade, of which one end portion extends from the flow tube and the other end portion is arranged to be spaced apart from the barrier wall, and which is formed convex toward the flowing direction; and a resonance chamber provided with an opening, through which the fluid is introduced, between the barrier wall and the other end portion of the blade, and having an internal space formed by the blade, the barrier wall, and the flow tube.

IPC Classes  ?

• F02M 35/12 - Intake silencers
• F01N 1/02 - Silencing apparatus characterised by method of silencing by using resonance

Abstract

The purpose of the present invention is to provide a meta muffler which can increase the transmission loss of noise flowing inside a flow pipe by maximizing the sound energy loss of noise entering a resonance chamber of a meta structure, and can effectively attenuate broadband noise from the low frequency region to the high frequency region. To this end, the present invention is characterized by comprising: a flow pipe through which a fluid flows; an outer cylinder disposed spaced apart from and outside the flow pipe; and meta structures. Each of the meta structures is provided with: an opening portion open in parallel to the flow direction of the fluid; a resonance chamber disposed between the flow pipe and the outer cylinder and communicating with the flow pipe via the opening portion; and a neck adjustment member disposed along the flow direction so as to be spaced apart from the opening portion, and extending from the outer cylinder toward the flow pipe. The plurality of meta structures are arranged along the flow direction.

IPC Classes  ?

• F02M 35/12 - Intake silencers
• F01N 1/02 - Silencing apparatus characterised by method of silencing by using resonance

Abstract

One embodiment of the present invention provides a stretchable substrate capable of adjusting various pitches of a mounted element, and an element spacing control method using same. The stretchable substrate includes a cell and electrode wiring. The cell is divided by a cut line and is formed in plurality. The electrode wiring is continuously provided on the plurality of cells so as not to cross the cut line. The cells are connected to neighboring cells by a connection portion in which no cut line is formed, the cells rotate in a hinged manner around the connection portion when a tensile force is applied, and the electrode wiring maintains a continuous state even when the cells rotate in the hinged manner.

IPC Classes  ?

• H05K 1/02 - Printed circuits Details
• H05K 3/34 - Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering

Abstract

One embodiment of the present invention provides a stamp for stably removing defective elements on a substrate, and an apparatus comprising the stamp for removing defective elements. The stamp for removing defective elements comprises a stamp main body part, an adhesive layer, and a heating unit. The stamp main body part is provided with a recessed insertion part on the bottom so that a defective element is inserted thereinto. The adhesive layer is provided in the recessed insertion part so that the defective element adheres thereto when inserted. The heating unit is provided in the stamp main body part and heats the adhesive layer so that a defective element adheres thereto.

IPC Classes  ?

• H05K 13/04 - Mounting of components

Abstract

One embodiment of the present invention provides an element repair apparatus that prevents damage to a new element and enables a safe repair process to be performed. Here, the element repair apparatus comprises: a stamp for transferring a connection material; and a stamp for transferring an element. The stamp for transferring a connection material transfers a new connection material to a repair area on a substrate to which the element has not been transferred. The stamp for transferring an element transfers a new element to the new connection material. The stamp for transferring an element has a load control unit for an element that is bent and transformed when a pressing force is applied so that a zero stiffness load smaller than a failure limit load of the new element is applied to the new element.

IPC Classes  ?

• H05K 13/04 - Mounting of components
• H05K 3/34 - Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
• H05K 1/11 - Printed elements for providing electric connections to or between printed circuits

Abstract

Provided in one embodiment of the present invention is a stretchable substrate having a low damage rate while being capable of large tensile deformation, wherein the stretchable substrate comprises cells, a cutting portion, and an extension cut line. The cells are formed in a plurality on a substrate body, and elements are mounted thereon. The cutting portion is formed on the substrate body so that the interval between the cells increases during elongation of the substrate body. The extension cut line is extensively formed on an end portion of the cutting portion so as to be inwardly bent toward the inside of the cells, and thus the edges of the cells are rounded.

IPC Classes  ?

• H05K 1/02 - Printed circuits Details
• G09F 9/30 - Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements

Abstract

A graphene manufacturing device using Joule heating includes: a chamber having a space provided therein so as to synthesize graphene; and a first roller portion and a second roller portion disposed inside the chamber to be spaced from each other such that same support a catalyst metal penetrating the interior of the chamber and are supplied with an electric current for graphene synthesis, thereby Joule-heating the catalyst metal. In order to compensate for a temperature deviation of the catalyst metal passing between the first roller portion and the second roller portion, a first area of the catalyst metal, which is close to the first roller portion, and a second area of the catalyst metal, which is close to the second roller portion, are disposed to have movement paths facing each other.

IPC Classes  ?

• B01J 8/00 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes
• C01B 32/184 - Preparation

Abstract

A multifunctional parametric device using an optical material in which permittivity is spatiotemporally modulated according to the present invention may be used as a frequency converter and oscillator according to a design characteristic. Since a converted and oscillated frequency is determined according to a modulation frequency of a thin slab of which permittivity is spatiotemporally modulated, a user is capable of actively determining a frequency modulation and oscillation characteristic using the parametric device.

IPC Classes  ?

• G02B 1/00 - Optical elements characterised by the material of which they are madeOptical coatings for optical elements
• G02B 5/30 - Polarising elements

Abstract

A film transferring method according to an embodiment of the present invention of transferring a film adhered to a substrate to a roller in a state that a first adhesion force between the roller and the film and a second adhesion force between the film and the substrate are substantially the same includes: a transporting step of transporting the substrate and the film of which a first adhesion surface formed on one surface is adhered to the substrate in a first direction; a close contacting step of closely contacting the front end of the second adhesion surface formed on the other surface of the film that is transported with the roller rotating in the first rotation direction; and a transferring step of peeling the film from the substrate and simultaneously transferring it to the roller by peeling the front adhesion surface of the first adhesion surface from the substrate, while simultaneously transferring the front end of the second adhesion surface to the roller and continuously transporting the substrate in the first direction, wherein a first weak adhesion force that is smaller than the second adhesion force is formed between the front adhesion surface and the substrate.

IPC Classes  ?

• B32B 43/00 - Operations specially adapted for layered products and not otherwise provided for, e.g. repairingApparatus therefor
• B41F 16/00 - Transfer printing apparatus
• B65H 29/56 - Article strippers, e.g. for stripping from advancing elements for stripping from elements of machines

Abstract

Provided in one embodiment of the present invention are: a meta structure having a zero elastic modulus section, the structure being capable of having uniform stress in a certain deformation section; and a method for designing the meta structure having a zero elastic modulus section, wherein the meta structure having a zero elastic modulus section comprises a first unit and a second unit. The first unit is formed in a structure enabling buckling and includes a section having a negative elastic modulus in a stress-strain rate relationship. The second unit is arranged to be adjacent to the first unit and includes a section having a positive elastic modulus in the stress-strain rate relationship. The meta structure has a zero elastic modulus in a preset target deformation section because of a combination of the negative elastic modulus of the first unit and the positive elastic modulus of the second unit.

IPC Classes  ?

• B41F 16/00 - Transfer printing apparatus
• A47C 23/00 - Spring mattresses with rigid frame or forming part of the bedstead, e.g. box springsDivan basesSlatted bed bases

Abstract

The present invention relates to an ultrasonic transmission device and a wave control method, and, more specifically, to an ultrasonic transmission device capable of transmitting an ultrasonic wave through an obstruction, and a wave control method.

IPC Classes  ?

• G01N 29/06 - Visualisation of the interior, e.g. acoustic microscopy
• G01N 29/09 - Analysing solids by measuring mechanical or acoustic impedance
• G01N 29/22 - Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic wavesVisualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object Details
• G01N 29/24 - Probes
• G01N 29/34 - Generating the ultrasonic, sonic or infrasonic waves

Abstract

One embodiment of the present invention provides: a non-rigid pad for device transfer, which enables a uniform contact pressure to be provided between a device and a target substrate to which the device is to be transferred; a method for manufacturing a non-rigid pad for device transfer; and a non-rigid pad group for device transfer comprising a non-rigid pad for device transfer. Here, the non-rigid pad for device transfer comprises: a base plate; and a plurality of pillars which each have one end connected to one surface of the base plate and protrude so as to be bent and deformed when an external force is applied, and the non-rigid pad for device transfer is interposed between a transfer film to which a plurality of elements to be transferred to the target substrate are adhered, and a pressing unit which provides a pressing force such that the plurality of elements are transferred to the target substrate, and is bent and deformed so as to provide a uniform contact pressure between the plurality of elements and the target substrate when the pressing force of the pressing unit is applied.

IPC Classes  ?

• H01L 21/67 - Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereofApparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components
• B29C 35/02 - Heating or curing, e.g. crosslinking or vulcanising
• B29C 33/38 - Moulds or coresDetails thereof or accessories therefor characterised by the material or the manufacturing process

Abstract

A method for transferring a micro device on a curved surface according to an exemplary embodiment of the present invention includes: coating an adhesive layer on an external circumferential surface of a tube; providing a micro device pattern on one side of a substrate; positioning an external circumferential surface of the tube to contact the substrate and allow a length direction of the device pattern to cross a radius direction of the tube, and rotating the tube with respect to an axis-direction of the tube and simultaneously moving at least one of the tube and the substrate in a rectilinear way to transfer the micro device pattern on the substrate to the adhesive layer; and fixing the transferred micro device pattern to the adhesive layer by curing the adhesive layer.

IPC Classes  ?

• H05K 3/20 - Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern by affixing prefabricated conductor pattern
• B41M 1/06 - Lithographic printing
• H01L 21/683 - Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereofApparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components for supporting or gripping

Abstract

FS/2=odd. Thus, highly-efficient flow velocity measurement is possible.

IPC Classes  ?

• G01F 1/667 - Arrangements of transducers for ultrasonic flowmetersCircuits for operating ultrasonic flowmeters
• G01F 1/66 - Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters

Abstract

Provided in one embodiment of the present invention are an element transfer method capable of increasing the yield rate of transferring an element, and an electronic panel manufacturing method using same. The element transfer method comprises the steps of: preparing a carrier film in which a first surface of an element having a terminal is adhered to an adhesive surface; preparing a cover adhesive layer on the adhesive surface so as to cover a second surface of the element, which is opposite to the first surface and does not have a terminal; adhering the cover adhesive layer to a target substrate while the second surface faces the target substrate, so as to transfer the element onto the target substrate; and separating the carrier film from the element, wherein, in the element transfer step, the carrier film is pressurized so that the surface of the cover adhesive layer is flattened to the same height as the terminal.

IPC Classes  ?

• H01L 21/52 - Mounting semiconductor bodies in containers
• H01L 27/15 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components with at least one potential-jump barrier or surface barrier, specially adapted for light emission
• H01L 23/00 - Details of semiconductor or other solid state devices
• H01L 21/78 - Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices
• H01L 21/324 - Thermal treatment for modifying the properties of semiconductor bodies, e.g. annealing, sintering

Abstract

One embodiment of the present invention provides a carrier substrate that prevents damage to an element during a transfer process and improves a transfer yield and transfer precision, and an element transfer method using same. The carrier substrate comprises: a base layer; an anti-reflection layer; and an energy absorbing layer. The anti-reflection layer is provided on one surface of the base layer, and allows an elastic wave generated by a first laser beam, which is incident on a source substrate of an adhered element and transmitted through to the element, to be transmitted through the base layer without being reflected in the direction of the element. The energy absorbing layer is provided between the base layer and the anti-reflection layer and is aligned with the element, and evaporates when energy is absorbed.

IPC Classes  ?

• H01L 23/14 - Mountings, e.g. non-detachable insulating substrates characterised by the material or its electrical properties
• H01L 23/32 - Holders for supporting the complete device in operation, i.e. detachable fixtures
• H01L 33/02 - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS - Details thereof characterised by the semiconductor bodies
• H01L 21/78 - Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices
• H01L 21/67 - Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereofApparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components

Abstract

The present invention provides an ultrasonic wave transmission structure which is provided on the path of ultrasonic waves to amplify incident ultrasonic waves. To this end, disclosed is a feature comprising: a plurality of rings provided with body parts having different radii and arranged to be spaced apart from each other and slits respectively formed between adjacent body parts; and a membrane installed in the plurality of rings, wherein the mass of the membrane is adjusted to vary a resonance frequency formed in a plurality of membrane sub-areas.

IPC Classes  ?

• B06B 1/02 - Processes or apparatus for generating mechanical vibrations of infrasonic, sonic or ultrasonic frequency making use of electrical energy
• H04R 19/00 - Electrostatic transducers

Abstract

The present invention is to provide a highly sound-transmissible cover unit of an ultrasonic transducer, wherein the cover unit can emit a high power ultrasonic signal by amplifying ultrasound generated by an ultrasound generation part, and can completely prevent the inflow of external foreign substances. To this end, the present invention comprises an amplification part and a membrane, the amplification part comprising: body parts that are coupled to an ultrasound generation part for generating ultrasound, are shaped like multiple rings having different radiuses, and are spaced apart from each other; slit parts, each of which is recessed from an incident surface which ultrasound enters, and is formed between the adjacent body parts; and a cover part disposed on an exit surface from which ultrasound is emitted, wherein the membrane is coupled to the cover part and has a resonance frequency matching the operating frequency of ultrasound generated by the ultrasound generation part, multiple through-holes are formed through the cover part and are interconnected to the slit parts, and each of the through-holes has a diameter smaller than the widths of the slit parts.

IPC Classes  ?

• A61B 8/00 - Diagnosis using ultrasonic, sonic or infrasonic waves
• G01N 29/22 - Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic wavesVisualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object Details

Abstract

The present invention provides a cover unit for an ultrasonic transducer, which can amplify ultrasonic waves generated in an ultrasonic generation part and radiate a high power ultrasonic signal. To this end, the present invention comprises: a body part to which an ultrasonic generation unit for generating ultrasonic waves is coupled; first slit parts which are disposed on the lower part of the body part, in the form of a plurality of rings having different radii and spaced apart from each other, and which are formed to have a first width; second slit parts which are formed to be sunken from the upper surface of the body part, to communicate with the first slit parts, and to have a second width smaller than the first width; a bottom part which is formed under the first slit parts; a first side wall part formed between neighboring first slit parts; and a second side wall part formed between neighboring second slit parts.

IPC Classes  ?

• A61B 8/00 - Diagnosis using ultrasonic, sonic or infrasonic waves
• G01N 29/22 - Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic wavesVisualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object Details

Abstract

The present invention relates to a one-dimensional electrically conductive Ni-organic structure in which an organic ligand including a substituted or unsubstituted C6 to C30 aryltetramine, and Ni are repeatedly bonded in a straight chain. Accordingly, the one-dimensional Ni-organic structure of the present invention has excellent electrical conductivity and is introduced as an anode electrode material of an energy storage device, thereby being applied to a super capacitor with high specific capacitance.

IPC Classes  ?

• C07F 15/04 - Nickel compounds
• H01G 11/30 - Electrodes characterised by their material

Abstract

The present invention relates to a two-dimensional Ni-organic framework/rGO composite comprising: a two-dimensional electroconductive Ni-organic framework in which Ni and an organic ligand containing a substituted or unsubstituted C6-C30 aryl-hexamine are repeatedly bonded in a branched form; and reduced graphene oxide (rGO). Thus, when a composite of reduced graphene oxide (rGO) and two-dimensional Ni-MOF is prepared and used as an energy storage electrode material, the two-dimensional Ni-organic framework/rGO composite of the present invention can exhibit higher discharge capacity per weight due to the synergistic effect of rGO and Ni-MOF as compared to when Ni-MOF is used alone, and the composite is used to manufacture a thin-film-type electrode, which can be used as a next-generation energy storage electrode having mechanical bending strength and high energy density per volume.

IPC Classes  ?

• H01M 4/36 - Selection of substances as active materials, active masses, active liquids
• H01M 4/60 - Selection of substances as active materials, active masses, active liquids of organic compounds
• H01M 4/587 - Carbonaceous material, e.g. graphite-intercalation compounds or CFx for inserting or intercalating light metals
• H01M 4/62 - Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
• H01G 11/30 - Electrodes characterised by their material
• H01G 11/36 - Nanostructures, e.g. nanofibres, nanotubes or fullerenes
• C07F 15/04 - Nickel compounds
• C01B 32/198 - Graphene oxide

Abstract

The present invention relates to a holographic-based directional sound device that makes a sound wave generated by a sound wave generating means have directivity such that the sound wave is radiated in a specific direction. The technical gist of the present invention is the holographic-based directional sound device comprising: a sound wave generating means which generates a sound wave; and a flat plate which has the sound wave generating means installed at the center thereof so as to radiate the sound wave to the outside through a surface thereof, and is composed of a plurality of unit cells, and in which at least one groove is formed on surfaces of the unit cells, and a radiation angle of the sound wave is determined according to the depth of the groove with respect to a unit cell, wherein the depth of the groove with respect to the unit cell is determined by an individual surface admittance calculated on the basis of a cosine function or a sine function of the sum of a first value and a second value, the first value being obtained by multiplying, on the basis of a preset radiation angle of the sound wave and a preset frequency of the sound wave, the frequency of the sound wave by a refractive index according to a surface of the unit cell and a radial distance from the center of the flat plate to the unit cell, and the second value being obtained by multiplying the frequency of the sound wave by a position value of the unit cells and the radiation angle of the sound wave.

IPC Classes  ?

• H04R 1/32 - Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
• H04R 1/34 - Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
• G03H 1/02 - Holographic processes or apparatus using light, infrared, or ultraviolet waves for obtaining holograms or for obtaining an image from themDetails peculiar thereto Details

Abstract

An embodiment of the present invention provides an ultrasonic wave amplifying unit which can improve ultrasonic power in air, wherein the ultrasonic wave amplifying unit includes multiple rings having a concentric axis and each having a first width, and a slit having a second width is formed between the rings and an air layer is formed between the multiple rings and an ultrasonic wave generator generating ultrasonic waves or a transfer medium transferring the ultrasonic waves.

IPC Classes  ?

• B06B 1/02 - Processes or apparatus for generating mechanical vibrations of infrasonic, sonic or ultrasonic frequency making use of electrical energy
• B06B 3/02 - Processes or apparatus specially adapted for transmitting mechanical vibrations of infrasonic, sonic or ultrasonic frequency involving a change of amplitude
• G01N 29/34 - Generating the ultrasonic, sonic or infrasonic waves
• H03B 5/12 - Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device

Abstract

A directional sound apparatus includes a planar shape plate and a sound wave generator. The planar shape plate has a plurality of grooves formed on a surface of the planar shape plate. The sound wave generator is configured to radiate a sound wave to outside from the surface of the planar shape plate. A width of each of the grooves and a distance between the grooves adjacent to each other are smaller than a wavelength of the sound wave. The planar shape plate has a plurality of cell areas in which at least one groove is included. A structure of the groove included in a first cell area is different from that of the groove included in a second cell area adjacent to the first cell area, so that surface admittance in the first cell area is different from that in the second cell area.

IPC Classes  ?

• G10K 11/32 - Sound-focusing or directing, e.g. scanning characterised by shape of the source
• G10K 11/26 - Sound-focusing or directing, e.g. scanning
• G10K 11/18 - Methods or devices for transmitting, conducting or directing sound
• G10K 11/36 - Devices for manipulating acoustic surface waves

Abstract

The present invention provides a sound absorbing patch capable of maximizing sound wave energy exhaustion due to friction of a viscous fluid and implementing a small size and a light weight, and an underwater sound absorbing plate using same. Disclosed is the feature comprising: a housing having an accommodation space therein; a viscous fluid accommodated in the accommodation space; a cover member coupled to the housing so that the accommodation space is sealed and enabling sound waves to be introduced into the accommodation space; a baffle member arranged in the accommodation space and forming a plurality of sound absorbing spaces into which the sound waves introduced into the accommodation space are distributed and introduced; and an elastic member which is arranged between the housing and the baffle member, and, as the sound waves are introduced into the sound absorbing spaces, contracts and expands by the viscous fluid entering and exiting the sound absorbing spaces, wherein, as sound wave energy is converted into thermal energy due to friction between the viscous fluid and the baffle member, the sound wave energy is exhausted.

IPC Classes  ?

• G10K 11/16 - Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
• B63G 8/34 - Camouflage
• B63G 13/02 - Camouflage