A photo-alignable object has a thickness of more than 2 μm. The photo-alignable object can be in the form of a free standing film. Also, the photo-alignable object can have a topographical surface structure. The depth of the topographical surface structure can be larger than 100 nm, and preferably the depth of the topographical surface structure is larger than 1 μm.
B29D 11/00 - Producing optical elements, e.g. lenses or prisms
G02F 1/1337 - Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
G02B 30/27 - 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 lenticular arrays
G02F 1/1335 - Structural association of cells with optical devices, e.g. polarisers or reflectors
The present invention relates to novel photoactive polymer materials and their use as orienting layer for liquid crystals, which are used for the production of non-structured and structured optical elements or electro-optical elements and multi-layer systems.
A photo-alignable object has a thickness of more than 2 μm. The photo-alignable object can be in the form of a free standing film. Also, the photo-alignable object can have a topographical surface structure. The depth of the topographical surface structure can be larger than 100 nm, and preferably the depth of the topographical surface structure is larger than 1 μm.
G02B 30/27 - 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 lenticular arrays
B29D 11/00 - Producing optical elements, e.g. lenses or prisms
G02F 1/1337 - Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
G02F 1/1335 - Structural association of cells with optical devices, e.g. polarisers or reflectors
G02F 1/29 - 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 position or the direction of light beams, i.e. deflection
The invention relates to an optical security device with multiple hidden images which become visible by arranging a polarizer above or below the device. Additional images become visible upon rotation of the polarizer. The optical device comprises two patterned optical retarders and a polarizer between the retarders.
The invention relates to an optical security system comprising an optical element with a patterned anisotropic optical property, wherein information is encoded and encrypted in the pattern of the optical element. The system further comprises a patterned polarizer in which the pattern is such that the information stored in the optical element can be decrypted.
G06K 19/06 - Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
An optical element where a first and a second image is at least partially encoded by a pattern of a non-periodic, anisotropic surface relief microstructure such that when light is incident on the surface of the element the first image is optimally visible under a first viewing angle and the second image is optimally visible under a second viewing angle. The optical element is particularly useful for securing documents and articles against counterfeiting and falsification.
The invention relates to an optical device comprising two patterned retarders and a reflective polarizer between the retarders. Information which is stored in the pattern of the retarders can be observed both in transmission and reflection. The device according to the invention can be used as high security element, for example for banknotes.
The present invention relates to a photoalignment composition comprising a) 0.001 to 20%, by weight; preferably, 1 to 10% by weight, more preferably 1 to 9% by weight of at least one photoreactive compound (I) that comprises a photoalignment group and b) 80 to 99.999% by weight, preferably, 90 to 99% by weight, more preferably 91 to 99% by weight of at least one compound (II) that does not comprise a photoalignment group, and c) optionally at least one reactive or non reactive additives, and d) optionally at least one solvent. Further, the present invention relates to the use of this photoalignment composition for the alignment of liquid crystals or liquid crystal polymers, in electro-optical and optical elements, systems and devices.
The present invention relates to a polymer containing scattering type VA liquid crystal device with very low hysteresis characteristics. The reduction of the hysteresis is achieved by providing a pretilt angle.
G02F 1/1334 - Constructional arrangements based on polymer-dispersed liquid crystals, e.g. microencapsulated liquid crystals
G02F 1/1337 - Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
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
G02F 1/1335 - Structural association of cells with optical devices, e.g. polarisers or reflectors
The invention provides a method for generation of an orientation pattern in a photo-alignable material using parallax optic. The invention further provides optical devices comprising a parallax optical element and an element with patterned optical anisotropic properties. Such devices have angular dependent, optically anisotropic properties, which are useful for various applications.
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
G02B 30/27 - 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 lenticular arrays
New dichroic dyes having a composition with slave materials. The dyes may be used for a dichroic polymer network, a dichroic liquid crystalline polymer film (LCP film) or a dichroic liquid crystalline polymer gel, which for instance find application as electro-optical or optical devices.
The invention relates to an optical security device with multiple hidden images which become visible by arranging a polarizer above or below the device. Additional images become visible upon rotation of the polarizer. The optical device comprises two patterned optical retarders and a polarizer between the retarders.
The invention relates to an optical security system comprising an optical element with a patterned anisotropic optical property, wherein information is encoded and encrypted in the pattern of the optical element. The system further comprises a patterned polarizer in which the pattern is such that the information stored in the optical element can be decrypted.
The invention relates to an optical device comprising two patterned retarders (11, 12) and a reflective polarizer (13) between the retarders. Information which is stored in the pattern of the retarders can be observed both in transmission and reflection. The device according to the invention can be used as high security element, for example for banknotes.
The present invention relates to an optical element wherein a first and a second image is at least partially encoded by a pattern of a non-periodic, anisotropic surface relief microstructure such that when light is incident on the surface of the element the first image is optimally visible under a first viewing angle and the second image is optimally visible under a second viewing angle. The elements according to the invention are particularly useful for securing documents and articles against counterfeiting and falsification.
G09F 19/14 - Advertising or display means not otherwise provided for using special optical effects displaying different signs depending upon the view-point of the observer
The invention relates to a photoalignment composition comprising at least a single photoalignment polymer, preferably a homo- or a copolymer having at least one photoreactive group; and at least a single solvent of formula (I) (R-CO-O-R'), wherein R and R' are independently from each other straigt-chain or branched alkyl chain, with the proviso that at least one alkyl chain is branched. Further, the present invention relates to the use of this composition for coating or printing, especially for printing, more especially for inkjet or offset printing processes, and most especially for an offset printing process. In addition, the present invention relates to the use of the photoalignment composition for the preparation of orientation layers for liquid crystals and in the construction of unstructured and structured optical elements and multi-layer systems, especially liquid crystal displays, LCDs.
The present invention relates to a method for manufacturing a photo-alignable object. The invention further provides compositions for the manufacturing of a photo-alignable object as well as different embodiments of photo-alignable objects and devices using them.
B29D 11/00 - Producing optical elements, e.g. lenses or prisms
G02F 1/1337 - Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
G02B 27/22 - Other optical systems; Other optical apparatus for producing stereoscopic or other three-dimensional effects
G02F 1/1335 - Structural association of cells with optical devices, e.g. polarisers or reflectors
G02F 1/29 - 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 position or the direction of light beams, i.e. deflection
NEDERLANDSE ORGANISATIE VOOR TOEGEPAST-NATUURWETENSCHAPPELIJK ONDERZOEK TNO (Netherlands)
ROLIC AG (Switzerland)
Inventor
Frantz, Richard
Van Mol, Antonius Maria Bernardus
Sailer, Bernhard
Abstract
A barrier film laminate (1) comprising an organic layer (4) that is situated in between two inorganic layers (2, 3). The organic layer comprises submicron getter particles (5) at an amount between 0.01 and 0.9% by weight. The barrier film laminate can be used for encapsulating organic electronic devices such as OLEDs. The long term homogenous transparency makes this laminate in particular suited for protecting the light emitting side of an OLED.
H01L 51/52 - 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 specially adapted for light emission, e.g. organic light emitting diodes (OLED) or polymer light emitting devices (PLED) - Details of devices
B32B 27/08 - Layered products essentially comprising synthetic resin as the main or only constituent of a layer next to another layer of a specific substance of synthetic resin of a different kind
The present invention relates to a radiation curable composition. In particular, the present invention relates to a radiation curable composition with hydrophilic nanoparticles for use in barrier stacks for protection of sensitive devices against moisture.
C09D 4/00 - Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond
H01L 51/52 - 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 specially adapted for light emission, e.g. organic light emitting diodes (OLED) or polymer light emitting devices (PLED) - Details of devices
20.
POLYMER CONTAINING SCATTERING TYPE VERTICALLY ALIGNED LIQUID CRYSTAL DEVICE
The present invention relates to a polymer containing scattering type VA liquid crystal device with very low hysteresis characteristics. The reduction of the hysteresis is achieved by providing a pretilt angle.
G02F 1/1334 - Constructional arrangements based on polymer-dispersed liquid crystals, e.g. microencapsulated liquid crystals
G02F 1/1337 - Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
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
The present invention relates to novel compounds that are particularly useful for the alignment, especially photoalignment, of slave material, especially liquid crystals for optical or electro-optical applications, such as security applications, liquid crystal devices or optical or electro-optical films.
C07C 255/37 - Carboxylic acid nitriles having cyano groups bound to acyclic carbon atoms having cyano groups bound to acyclic carbon atoms of a carbon skeleton containing at least one six-membered aromatic ring the carbon skeleton being further substituted by etherified hydroxy groups
C09K 19/16 - Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings linked by a carbon chain the chain containing carbon-to-carbon double bonds, e.g. stilbenes
C09D 179/08 - PolyimidesPolyester-imidesPolyamide-imidesPolyamide acids or similar polyimide precursors
C08G 73/10 - PolyimidesPolyester-imidesPolyamide-imidesPolyamide acids or similar polyimide precursors
G02F 1/1337 - Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
C07C 255/38 - Carboxylic acid nitriles having cyano groups bound to acyclic carbon atoms having cyano groups bound to acyclic carbon atoms of a carbon skeleton containing at least one six-membered aromatic ring the carbon skeleton being further substituted by esterified hydroxy groups
C08F 120/18 - Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
C08F 220/18 - Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
- 32 - SUMMARY [00120] The invention relates to encapsulation structures for OLED displays, wherein the structure provides sufficient barrier properties against oxygen and moisture as well as anti-reflection properties. The structure includes a layer comprising a photo-aligned substance which in a synergistic manner controls both barrier and anti-reflection properties.
H01L 51/52 - 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 specially adapted for light emission, e.g. organic light emitting diodes (OLED) or polymer light emitting devices (PLED) - Details of devices
The present invention relates to new dichroic dyes, their composition with slave materials and their use for a dichroic polymer network, a dichroic liquid crystalline polymer film (LCP film) or a dichroic liquid crystalline polymer gel, which for instance find application as electro- optical or optical devices.
The invention provides a method for generation of an orientation pattern in a photo-alignable material using parallax optic. The invention further provides optical devices comprising a parallax optical element and an element with patterned optical anisotropic properties. Such devices have angular dependent, optically anisotropic properties, which are useful for various applications.
The present invention relates to a photo-alignment composition for the alignment of liquid crystals. Further the present invention relates to the liquid crystal alignment film and coating layer prepared from the said composition and the use to fabricate optical and electrooptical elements and devices.
The invention relates to conducting and semi-conducting photoreactive compounds, represented by the general formula (I), to the use of these compounds for the preparation of oriented and/or orientation layers; and to their use in the construction of unstructured and structured optical, electro optical or optoelectronic elements and multi-layer systems.
C09K 11/00 - Luminescent, e.g. electroluminescent, chemiluminescent, materials
C08G 61/12 - Macromolecular compounds containing atoms other than carbon in the main chain of the macromolecule
H01B 1/00 - Conductors or conductive bodies characterised by the conductive materialsSelection of materials as conductors
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
27.
Fast generation of elements with individually patterned anisotropy
The present invention relates to an apparatus which allows producing elements with individually patterned anisotropic properties, where the pattern may vary from element to element. An apparatus according to the invention comprises a support for a substrate and an exposure unit for providing spatially modulated aligning light with a first polarization plane, wherein the exposure unit contains a light source, a spatial light modulator, which can be controlled electronically, for example by a computer, and a projection lens. The present invention furthermore relates to a method for fast production of elements with individually patterned anisotropic properties using such an apparatus.
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
The present invention relates to a method for manufacturing a photo-alignable object. The invention further provides compositions for the manufacturing of a photo-alignable object as well as different embodiments of photo-alignable objects and devices using them.
B29D 11/00 - Producing optical elements, e.g. lenses or prisms
G02F 1/1337 - Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
G02F 1/29 - 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 position or the direction of light beams, i.e. deflection
The present invention relates to novel compounds that are particularly useful for the alignment, especially photoalignment, of slave material, especially liquid crystals for optical or electro-optical applications, such as security applications, liquid crystal devices or optical or electro-optical films.
C07C 255/37 - Carboxylic acid nitriles having cyano groups bound to acyclic carbon atoms having cyano groups bound to acyclic carbon atoms of a carbon skeleton containing at least one six-membered aromatic ring the carbon skeleton being further substituted by etherified hydroxy groups
C08F 265/06 - Polymerisation of acrylate or methacrylate esters on to polymers thereof
C08G 73/10 - PolyimidesPolyester-imidesPolyamide-imidesPolyamide acids or similar polyimide precursors
G02F 1/1337 - Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
The invention relates to photo-alignment layers for planar alignment of liquid crystals. Photo-alignment layers according to the invention exhibit a characteristic wavelength dependency of the dichroism in the uv wavelength range. The invention further relates to methods for providing such photo-alignment layers as well as liquid crystal devices containing them.
G02F 1/1337 - Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
G02B 1/04 - Optical elements characterised by the material of which they are madeOptical coatings for optical elements made of organic materials, e.g. plastics
C07C 255/41 - Carboxylic acid nitriles having cyano groups bound to acyclic carbon atoms having cyano groups bound to acyclic carbon atoms of a carbon skeleton containing at least one six-membered aromatic ring the carbon skeleton being further substituted by carboxyl groups, other than cyano groups
C07D 307/81 - Radicals substituted by nitrogen atoms not forming part of a nitro radical
C07D 317/46 - Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3 ortho- or peri-condensed with carbocyclic rings or ring systems condensed with one six-membered ring
C07D 319/08 - 1,3-DioxanesHydrogenated 1,3-dioxanes condensed with carbocyclic rings or ring systems
C09K 19/04 - Liquid crystal materials characterised by the chemical structure of the liquid crystal components
The present invention relates to a method for the planar photoalignment of liquid crystals by using at least an aligning polymer and at least a polymerizable monomer. In addition, the present invention relates to a polymerizable monomer, to a composition comprising said aligning polymer and said polymerizable monomer and its use for alignment layers in optical, electro optical or optoelectronic devices, especially liquid crystal devices (LCDs), more especially in LCDs having IPS mode.
G02F 1/1337 - Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
G02F 1/00 - 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
The present invention relates to a copolymer for the photoalignment of liquid crystals comprising a photoreactive group as given below in formula (I), compositions thereof, and its use for optical and electro optical devices, especially liquid crystal devices (LCDs).
B32B 9/04 - Layered products essentially comprising a particular substance not covered by groups comprising such substance as the main or only constituent of a layer, next to another layer of a specific substance
C09D 179/08 - PolyimidesPolyester-imidesPolyamide-imidesPolyamide acids or similar polyimide precursors
C08F 220/18 - Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
C08G 73/10 - PolyimidesPolyester-imidesPolyamide-imidesPolyamide acids or similar polyimide precursors
G02F 1/1337 - Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
The present invention relates to an element comprising a surface area with a specific, optically effective surface relief microstructure (12). The surface relief microstructure has a surface modulation of top regions (13) and bottom regions (14), wherein in a first lateral direction of the surface area there is in average at least one transition from a top to a bottom region or vice versa within every 20 micrometer, and in a second lateral direction of the mask, which is perpendicular to the first direction, there is in average at least one transition from a first to a second zone or vice versa within every 200 micrometer. In the microstructure, (i) in the first direction the lateral arrangement of the transitions is non-periodic, and (ii) the top regions substantially lie in the same top relief plateau (15) and the bottom regions substantially lie in the same bottom relief plateau (16).
A radiation curable resin composition comprising: (A) metal oxide particles; (B) at least one photoinitiator, preferably a radical photoinitiator, or any mixture thereof; (C) at least one acrylate or methacrylate component with a Clog P higher than 2, preferably higher than 4, more preferably higher than 5,or any mixture thereof; (D) at least one monofunctional acrylate or methacrylate diluent component, preferably with a viscosity below 40 mPa•s at 20°C,or any mixture thereof; (E) at least one acrylate or methacrylate component with functionality equal or higher than 3, preferably 3 or 4,or any mixture thereof; can be advantageously used, for example,in multilayer barrier stack for the production of organic opto-electric or opto-electronic device, such as Organic Light Emitting Diode (OLED).
H01L 51/52 - 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 specially adapted for light emission, e.g. organic light emitting diodes (OLED) or polymer light emitting devices (PLED) - Details of devices
36.
FAST GENERATION OF ELEMENTS WITH INDIVIDUALLY PATTERNED ANISOTROPY
The present invention relates to an apparatus which allows producing elements with individually patterned anisotropic properties, where the pattern may vary from element to element. An apparatus according to the invention comprises a support for a substrate and an exposure unit for providing spatially modulated aligning light with a first polarization plane, wherein the exposure unit contains a light source, a spatial light modulator, which can be controlled electronically, for example by a computer, and a projection lens. The present invention furthermore relates to a method for fast production of elements with individually patterned anisotropic properties using such an apparatus.
The present invention relates to novel photoactive polymer materials their use as orienting layer for liquid crystals, which are used for the production of non-structured and structured optical elements or electro-optical elements and multi-layer systems.
The present invention relates to polymer, homo- or copolymer or oligomer for the photoalignment of liquid crystals, especially for the planar orientation of liquid crystals, comprising a main chain and a side chain, wherein the side chain and/or main chain comprises a polar group, compositions thereof, and its use for optical and electro optical devices, especially liquid crystal devices (LCDs).
C07C 219/32 - Compounds containing amino and esterified hydroxy groups bound to the same carbon skeleton having amino groups bound to carbon atoms of six-membered aromatic rings and esterified hydroxy groups bound to acyclic carbon atoms or to carbon atoms of rings other than six-membered aromatic rings of the same carbon skeleton
C07C 229/60 - Compounds containing amino and carboxyl groups bound to the same carbon skeleton having amino and carboxyl groups bound to carbon atoms of six-membered aromatic rings of the same carbon skeleton with amino and carboxyl groups bound to carbon atoms of the same non-condensed six-membered aromatic ring with amino and carboxyl groups bound in meta- or para- positions
C08G 73/10 - PolyimidesPolyester-imidesPolyamide-imidesPolyamide acids or similar polyimide precursors
C09K 19/04 - Liquid crystal materials characterised by the chemical structure of the liquid crystal components
G02F 1/1337 - Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
The invention relates to photo-alignment layers for planar alignment of liquid crystals. Photo-alignment layers according to the invention exhibit a characteristic wavelength dependency of the dichroism in the uv wavelength range. The invention further relates to methods for providing such photo-alignment layers as well as liquid crystal devices containing them.
The present invention relates to polymer, homo- or copolymer or oligomer, which, when irradiated with polarised light orients perpendicular to the polarization direction of polarized actinic light, for the photoalignment of liquid crystals, especially for the planar orientation of liquid crystals, and which derives from at least one monomer (I), compositions thereof, and its use for optical and electro optical devices, such as, liquid crystal devices (LCDs), especially for planar orientation of liquid crystals.
C07C 69/92 - Esters of carboxylic acids having an esterified carboxyl group bound to a carbon atom of a six-membered aromatic ring of monocyclic hydroxy carboxylic acids, the hydroxy groups and the carboxyl groups of which are bound to carbon atoms of a six-membered aromatic ring with etherified hydroxyl groups
C07C 219/32 - Compounds containing amino and esterified hydroxy groups bound to the same carbon skeleton having amino groups bound to carbon atoms of six-membered aromatic rings and esterified hydroxy groups bound to acyclic carbon atoms or to carbon atoms of rings other than six-membered aromatic rings of the same carbon skeleton
C07C 229/60 - Compounds containing amino and carboxyl groups bound to the same carbon skeleton having amino and carboxyl groups bound to carbon atoms of six-membered aromatic rings of the same carbon skeleton with amino and carboxyl groups bound to carbon atoms of the same non-condensed six-membered aromatic ring with amino and carboxyl groups bound in meta- or para- positions
C08G 73/10 - PolyimidesPolyester-imidesPolyamide-imidesPolyamide acids or similar polyimide precursors
C09K 19/04 - Liquid crystal materials characterised by the chemical structure of the liquid crystal components
G02F 1/1337 - Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
The present invention relates to a copolymer for the photoalignment of liquid crystals comprising a photoreactive group as given below in formula (I), compositions thereof, and its use for optical and electro optical devices, especially liquid crystal devices (LCDs).
C07C 69/00 - Esters of carboxylic acidsEsters of carbonic or haloformic acids
C07C 205/42 - Compounds containing nitro groups bound to a carbon skeleton the carbon skeleton being further substituted by esterified hydroxy groups having nitro groups or esterified hydroxy groups bound to carbon atoms of six-membered aromatic rings of the carbon skeleton
C07C 205/57 - Compounds containing nitro groups bound to a carbon skeleton the carbon skeleton being further substituted by carboxyl groups having nitro groups and carboxyl groups bound to carbon atoms of six-membered aromatic rings of the carbon skeleton
C07C 205/59 - Compounds containing nitro groups bound to a carbon skeleton the carbon skeleton being further substituted by carboxyl groups having nitro groups and carboxyl groups bound to carbon atoms of six-membered aromatic rings of the carbon skeleton the carbon skeleton being further substituted by singly-bound oxygen atoms
C07C 219/32 - Compounds containing amino and esterified hydroxy groups bound to the same carbon skeleton having amino groups bound to carbon atoms of six-membered aromatic rings and esterified hydroxy groups bound to acyclic carbon atoms or to carbon atoms of rings other than six-membered aromatic rings of the same carbon skeleton
C07C 229/00 - Compounds containing amino and carboxyl groups bound to the same carbon skeleton
C07C 229/60 - Compounds containing amino and carboxyl groups bound to the same carbon skeleton having amino and carboxyl groups bound to carbon atoms of six-membered aromatic rings of the same carbon skeleton with amino and carboxyl groups bound to carbon atoms of the same non-condensed six-membered aromatic ring with amino and carboxyl groups bound in meta- or para- positions
C07C 229/64 - Compounds containing amino and carboxyl groups bound to the same carbon skeleton having amino and carboxyl groups bound to carbon atoms of six-membered aromatic rings of the same carbon skeleton with amino and carboxyl groups bound to carbon atoms of the same non-condensed six-membered aromatic ring the carbon skeleton being further substituted by singly-bound oxygen atoms
C08G 73/10 - PolyimidesPolyester-imidesPolyamide-imidesPolyamide acids or similar polyimide precursors
C09K 19/20 - Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings linked by a chain containing carbon and oxygen atoms as chain links, e.g. esters
G02F 1/1337 - Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
A diamine compound of formula (I) is proposed as well as polymers, copolymers, polyamic acids, polyamic acid esters, or polyimides based on such compound.
The present invention relates to a surface relief structure for use in optical security elements, which comprises grooves (14) and anisotropic lands (12, 22), wherein the grooves and lands are arranged non-periodically along the preferred scattering axis, the heights of the lands are within one ore more height levels, the upper surfaces of the lands (13, 23), the surfaces of the grooves (14) are flat and substantially parallel to each other and in a cross-section with the preferred scattering plane (9) the flanks (15, 16, 25, 26) of the lands (12, 22) are asymmetric. The invention further relates to methods of making as well as to security elements comprising such relief structures.
B24D 15/10 - Hand tools or other devices for non-rotary grinding, polishing, or stropping specially designed for sharpening cutting edges of safety-razor blades
The present invention relates to novel photoactive polymer materials their use as orienting layer for liquid crystals, which are used for the production of non-structured and structured optical elements or electro-optical elements and multi-layer systems.
C08G 73/00 - Macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen, with or without oxygen or carbon, not provided for in groups
G02F 1/1337 - Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
46.
Ester group containing liquid crystals for optical or electro optical devices
The invention relates to polymerizable liquid crystals compound (I) having a liquid crystalline phase and to liquid crystalline compositions comprising compounds (I), their use as birefringence layer.
C09K 19/20 - Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings linked by a chain containing carbon and oxygen atoms as chain links, e.g. esters
A diamine compound of formula (I) is proposed as well as polymers, copolymers, polyamic acids, polyamic acid esters, or polyimides based on such compound.
The present invention relates to a method for the replication of a patterned surface relief microstructure, comprising the steps of generation of a first layer with a patterned surface relief microstructure, generation of a master, by copying the microstructure of the first layer into a second layer, thereby involving at least one dry or wet etching step, characterized by an additional step, in which the microstructure of the master is brought into contact with a replica material, such that the microstructure of the master is reproduced in the replica.
The invention further relates to the elements made as a replica according to the method.
The surface relief microstructures are suitable to display images with a positive-negative and/or color image flip. The elements according to the invention are particularly useful for securing documents and articles against counterfeiting and falsification.
G03F 7/00 - Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printed surfacesMaterials therefor, e.g. comprising photoresistsApparatus specially adapted therefor
B82Y 40/00 - Manufacture or treatment of nanostructures
G11B 7/26 - Apparatus or processes specially adapted for the manufacture of record carriers
The present invention relates to polymer, homo- or copolymer or oligomer for the photoalignment of liquid crystals comprising a main chain and a side chain, wherein the side chain comprises a difluoromethylen group, compositions thereof, and its use for optical and electro optical devices, especially liquid crystal devices (LCDs).
C08G 73/00 - Macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen, with or without oxygen or carbon, not provided for in groups
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
The present invention relates to photoaligning material with lateral substitution, compositions thereof, and its use for optical and electro optical devices, especially liquid crystal devices (LCDs).
The invention relates to polymerisable liquid crystals compound (I) having a liquid crystalline phase and to liquid crystalline compositions comprising compounds (I), their use as birefringence layer.
C09K 19/20 - Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings linked by a chain containing carbon and oxygen atoms as chain links, e.g. esters
C09K 19/46 - Mixtures of liquid crystal compounds covered by two or more of the preceding groups containing esters
d) optionally at least one solvent.
Further the present invention relates to the use of this photoalignment composition for the alignment of liquid crystals or liquid crystal polymers, in electro—optical and optical elements, systems and devices.
B05D 3/06 - Pretreatment of surfaces to which liquids or other fluent materials are to be appliedAfter-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation
G02F 1/1337 - Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
The present invention relates to a photoreactive compound for the preparation of a photoalignment material comprising thioether units, wherein the photoreactive compound is comprising at least one ene group and at least one photoalignment group, and further to a composition comprising at least one photoreactive compound and at least one polythiol, the use of this composition for the preparation of photoalignment materials, and their use for the alignment of liquid crystals or liquid crystal polymers, in electro-optical and optical elements, systems and devices.
The present invention relates to a method for the replication of a patterned surface relief microstructure, comprising the steps of generation of a first layer with a patterned surface relief microstructure, generation of a master, by copying the microstructure of the first layer into a second layer, thereby involving at least one dry or wet etching step, characterized by an additional step, in which the microstructure of the master is brought into contact with a replica material, such that the microstructure of the master is reproduced in the replica. The invention further relates to the elements made as a replica according to the method. The surface relief microstructures are suitable to display images with a positive- negative and/or color image flip. The elements according to the invention are particularly useful for securing documents and articles against counterfeiting and falsification.
The present invention relates to a photo-polymerized, patterned or unpatterned liquid crystal polymer, especially a liquid crystal polymer film or a liquid crystal polymer network, comprising thio-ether units of formula (I)
with the proviso that polymer dispersed liquid crystals are excluded.
Further, this invention relates to a composition used for the preparation of that photo-polymerized liquid crystal polymer of the invention, to processes of the preparation of that liquid crystal polymer and to its use.
A diamine compound of formula (I) is proposed as well as polymers, copolymers, polyamic acids, polyamic acid esters, or polyimides based on such compound.
C07C 69/75 - Esters of carboxylic acids having an esterified carboxyl group bound to a carbon atom of a ring other than a six-membered aromatic ring of acids with a six-membered ring
C07C 69/757 - Esters of carboxylic acids having an esterified carboxyl group bound to a carbon atom of a ring other than a six-membered aromatic ring having any of the groups OH, O-metal, —CHO, keto, ether, acyloxy, groups, groups, or in the acid moiety
C07C 219/32 - Compounds containing amino and esterified hydroxy groups bound to the same carbon skeleton having amino groups bound to carbon atoms of six-membered aromatic rings and esterified hydroxy groups bound to acyclic carbon atoms or to carbon atoms of rings other than six-membered aromatic rings of the same carbon skeleton
C07C 229/60 - Compounds containing amino and carboxyl groups bound to the same carbon skeleton having amino and carboxyl groups bound to carbon atoms of six-membered aromatic rings of the same carbon skeleton with amino and carboxyl groups bound to carbon atoms of the same non-condensed six-membered aromatic ring with amino and carboxyl groups bound in meta- or para- positions
C08F 220/36 - Esters containing nitrogen containing oxygen in addition to the carboxy oxygen
C08G 73/10 - PolyimidesPolyester-imidesPolyamide-imidesPolyamide acids or similar polyimide precursors
G02F 1/1337 - Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
57.
Optically effective surface relief microstructures and method of making them
The present invention relates to an element comprising a surface area with a specific, optically effective surface relief microstructure (12). The surface relief microstructure has a surface modulation of top regions (13) and bottom regions (14), wherein in a first lateral direction of the surface area there is in average at least one transition from a top to a bottom region or vice versa within every 20 micrometer, and in a second lateral direction of the mask, which is perpendicular to the first direction, there is in average at least one transition from a first to a second zone or vice versa within every 200 micrometer. In the microstructure, (i) in the first direction the lateral arrangement of the transitions is non-periodic, and (ii) the top regions substantially lie in the same top relief plateau (15) and the bottom regions substantially lie in the same bottom relief plateau (16).
Through scattering effects, the surface relief microstructures are suitable to display images with a positive-negative image flip, which advantageously have a distinct and saturated color appearance but at the same time do not show any rainbow colors.
The invention also relates to methods for making such elements as well as to security devices comprising such elements.
The present invention relates to a photoreactive compound for the preparation of a photoalignment material comprising thioether units, wherein the photoreactive compound is comprising at least one ene group and at least one photoalignment group, and further to a composition comprising at least one photoreactive compound and at least one polythiol, the use of this composition for the preparation of photoalignment materials, and their use for the alignment of liquid crystals or liquid crystal polymers, in electro-optical and optical elements, systems and devices.
C09D 4/06 - Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups
A diamine compound of formula (I) is proposed as well as polymers, copolymers, polyamic acids, polyamic acid esters, or polyimides based on such compound.
C07C 69/92 - Esters of carboxylic acids having an esterified carboxyl group bound to a carbon atom of a six-membered aromatic ring of monocyclic hydroxy carboxylic acids, the hydroxy groups and the carboxyl groups of which are bound to carbon atoms of a six-membered aromatic ring with etherified hydroxyl groups
C07C 229/42 - Compounds containing amino and carboxyl groups bound to the same carbon skeleton having amino groups bound to carbon atoms of at least one six-membered aromatic ring and carboxyl groups bound to acyclic carbon atoms of the same carbon skeleton with carboxyl groups linked to the six-membered aromatic ring, or to the condensed ring system containing that ring, by saturated carbon chains
C08F 32/00 - Homopolymers or copolymers of cyclic compounds having no unsaturated aliphatic radicals in a side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic ring system
C09K 19/12 - Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings at least two benzene rings directly linked, e.g. biphenyls
A diamine compound of formula (I) is proposed as well as polymers, copolymers, polyamic acids, polyamic acid esters, or polyimides based on such compound.
A thermally stable diamine compound of formula (I') is proposed as well as polymers, copolymers, polyamic acids, polyamic acid esters, or polyimides based on such compound.
C08G 73/00 - Macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen, with or without oxygen or carbon, not provided for in groups
C08G 73/10 - PolyimidesPolyester-imidesPolyamide-imidesPolyamide acids or similar polyimide precursors
The present invention concerns functionalized photoreactive compounds of formula (I), that are particularly useful in materials for the alignment of liquid crystals. Due to the adjunction of an electron withdrawing group to specific molecular systems bearing an unsaturation directly attached to two unsaturated ring systems, exceptionally high photosensitivities, excellent alignment properties as well as good mechanical robustness could be achieved in materials comprising said functionalized photoreactive compounds of the invention.
The invention relates to a method for the manufacturing of uniform and defect free liquid crystal aligning layers which comprises applying onto a substrate a composition having a viscosity in the range of 1 to 14 mPas, which comprises at least one liquid crystal photoalignment material and at least one solvent; or applying onto a substrate a composition comprising at least one liquid crystal photoalignment material and at least one surfactant, wherein the latter does not have any negative impact on the aligning properties. In addition, the present invention relates to the above-cited compositions and aligning layers, and to the use of these aligning layers for liquid crystal devices and optical or electro-optical components.
The present invention relates to a photo-polymerized, patterned or unpatterned liquid crystal polymer, especially a liquid crystal polymer film or a liquid crystal polymer network, comprising thio-ether units of formula (I): * covalent bond, which links the unit of formula (I) to the residue of the polymer wherein LC1 is selected from the group of liquid crystal residues, X1 is selected from the group of aliphatic organic residues, and n1 is an integer ≥ 0 and m1 is an integer ≥O; with the proviso that if n1 is 0, then m1 is ᡶ0, and if m1 is 0, then n1 ᡶ0; which is prepared in an atmosphere containing oxygen, preferably with an amount of 0.1 ≤ oxygen ≤ 50%, more preferably 1 ≤ oxygen ≤ 25%, most preferably in air; with the proviso that polymer dispersed liquid crystals are excluded. Further, this inventiorr relates to a composition used for the preparation of that photo- polymerized liquid crystal polymer of the invention, to processes of the preparation of that liquid crystal polymer and to its use.
The present invention relates to a method for the preparation of a birefringent layer of C-plate and O-plate type comprising polymerizing a composition comprising one or more liquid crystal of formula (I) wherein A1 and A2 denote independently from each other a polymerisable organic residue, Z1 and Z2 are independently from each other -CH(OH)-, -CO-, -O-, -CH2(CO)-, -SO-, -CH2(SO)-, -SO2-, -CH2(SO2)-, -COO-, -OCO-, -OCOO-, -COCF2-, -CF2CO-, -S-CO-, -CO-S-, -SOO-, -OSO-, -SOS-, -CH2-CH2-, -OCH2-, -CH2O-, -CH=CH-, -C≡C-, -CH=CH-COO-, -OCO-CH=CH-, -CH=N-, -CH(CH3)=N, -N=N- or a single covalent bond; preferably, -COO-, -OCO-, -OCOO-, more preferably -COO- and -OCO-, R1, R2, R3, R4, R5 and R6 are independently from each other hydrogen, an aromatic, carbocyclic or heterocyclic group, -C1-C40aIkyl, -NO2, -CN or halogen; preferably R1, R2, R3, R4, R5 and R6 are hydrogen, R7 is C1-C20alkyl or C1-C20alkenyl, wherein any -CH2-group of C1-C20alkyl or C1-C20alkenyl may be replaced independently from each other by -O-, -COO- or -CO-, with the proviso that -O-, -COO- and/or -CO- are not linked together, and at least one organic compound, having a terminal polar group. Further, the present invention relates to birefringent layers of O-plate and C-plate types prepared according to the method of the invention, and to optical and electrooptical components, and devices comprising the birefringent layers according to the invention.
C09K 19/20 - Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings linked by a chain containing carbon and oxygen atoms as chain links, e.g. esters
C09K 19/54 - Additives having no specific mesophase
C09K 19/10 - Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings
C09K 19/42 - Mixtures of liquid crystal compounds covered by two or more of the preceding groups
This invention relates to a birefringent layer, wherein the direction of the optical axis varies along the thickness direction of the layer, comprising I): (i) a liquid crystal monomer or pre-polymer having polymerisable groups; and (ii) a monomer or oligomer or polymer having photo-orientable groups, and/or (iii) a liquid crystal monomer or pre-polymer, oligomer or polymer having photo-orientable and polymerisable groups, and (iv) and optionally further components, or II): (v) a liquid crystal monomer or pre-polymer, oligomer or polymer having photo-orientable and polymerisable groups, and (vi) and optionally further components, in addition, this invention relates to a method for the preparation of the birefringent layer, its uses and optical components thereof.
The present invention relates to an element comprising a surface area with a specific, optically effective surface relief microstructure (12). The surface relief microstructure has a surface modulation of top regions (13) and bottom regions (14), wherein in a first lateral direction of the surface area there is in average at least one transition from a top to a bottom region or vice versa within every 20 micrometer, and in a second lateral direction of the mask, which is perpendicular to the first direction, there is in average at least one transition from a first to a second zone or vice versa within every 200 micrometer. In the microstructure, (i) in the first direction the lateral arrangement of the transitions is non-periodic, and (ii) the top regions substantially lie in the same top relief plateau (15) and the bottom regions substantially lie in the same bottom relief plateau (16). Through scattering effects, the surface relief microstructures are suitable to display images with a positive-negative image flip, which advantageously have a distinct and saturated color appearance but at the same time do not show any rainbow colors. The invention also relates to methods for making such elements as well as to security devices comprising such elements.
The present invention relates to a new optical component comprising an anisotropic diffuser (5,10) with patterned anisotropy; and means (9, 11, 14, 16, 17, 20, 21, 30, 32) for providing a colorshift observable upon changing viewing angle (6) and/or changing angle of incident light (2). It also relates to methods for making such an optical component and uses of such optical components as security elements with a very high level of security.
G02F 1/1335 - Structural association of cells with optical devices, e.g. polarisers or reflectors
G09G 3/36 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix by control of light from an independent source using liquid crystals
A diamine compound of formula (I) is proposed as well as polymers, copolymers, polyamic acids, polyamic acid esters, or polyimides based on such compound.
C07C 69/92 - Esters of carboxylic acids having an esterified carboxyl group bound to a carbon atom of a six-membered aromatic ring of monocyclic hydroxy carboxylic acids, the hydroxy groups and the carboxyl groups of which are bound to carbon atoms of a six-membered aromatic ring with etherified hydroxyl groups
C07C 229/42 - Compounds containing amino and carboxyl groups bound to the same carbon skeleton having amino groups bound to carbon atoms of at least one six-membered aromatic ring and carboxyl groups bound to acyclic carbon atoms of the same carbon skeleton with carboxyl groups linked to the six-membered aromatic ring, or to the condensed ring system containing that ring, by saturated carbon chains
C09K 19/20 - Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings linked by a chain containing carbon and oxygen atoms as chain links, e.g. esters
The present invention concerns functionalized photoreactive compounds of formula (I), that are particularly useful in materials for the alignment of liquid crystals. Due to the adjunction of an electron withdrawing group to specific molecular systems bearing an unsaturation directly attached to two unsaturated ring systems, exceptionally high photosensitivities, excellent alignment properties as well as good mechanical robustness could be achieved in materials comprising said functionalized photoreactive compounds of the invention.
16 - Paper, cardboard and goods made from these materials
17 - Rubber and plastic; packing and insulating materials
Goods & Services
Paper products included in this class, including goods in
the form of sheets for securement applications, particularly
banknotes, identification documents, plastic cards and for
protecting marks and goods; decorative and security sheets
of plastics for packaging purposes. Plastic sheets included in this class, not for packaging
purposes, including plastic sheets covered and/or
plasticized, for securement applications, particularly
bank-notes, identification documents, plastic cards and for
protecting marks and goods.
