TOSHIBA ELECTRON TUBES & DEVICES CO., LTD. (Japan)
Inventor
Onihashi, Hiroshi
Abstract
A radiation detector according to an embodiment comprises: an array substrate having a plurality of control lines extending in a first direction, a plurality of data lines extending in a second direction that intersects with the first direction, and detection units that are provided respectively to a plurality of regions delimited by the plurality of control lines and the plurality of data lines, that are electrically connected to a corresponding control line and a corresponding data line, and that detect radiation directly or in cooperation with a scintillator; a signal detection circuit that reads image data signals from the plurality of detection units; a noise detection circuit that detects noise; a plurality of first wires, one end of each first wire being electrically connected to a data line, and the other end of each first wire being electrically connected to the signal detection circuit; and a second wire, one end of the second wire not being electrically connected to the data lines electrically connected to the plurality of detection units, and the other end of the second wire being electrically connected to the noise detection circuit.
TOSHIBA ELECTRON TUBES & DEVICES CO., LTD. (Japan)
Inventor
Shimba, Yuichi
Abstract
According to an embodiment of the present invention, a radiation detector is provided with: an array substrate having a plurality of photoelectric conversion elements; a scintillator, which is provided on the photoelectric conversion elements, and which converts inputted radiation into fluorescence; a circuit board that is provided on the array substrate side that is opposite to the side on which the scintillator is provided; a flexible printed board that electrically connects to each other a plurality of wiring lines that are provided on the array substrate, and a plurality of wiring lines that are provided on the circuit board; and a semiconductor element that is provided on the flexible printed board such that the semiconductor element is positioned below the scintillator when viewed from the radiation input direction.
TOSHIBA ELECTRON TUBES & DEVICES CO., LTD. (Japan)
Inventor
Fujita, Shuichi
Abstract
A radiation detector according to an embodiment is provided with: an array substrate comprising a plurality of control lines extending in a first direction, a plurality of data lines extending in a second direction crossing the first direction, and a detection unit that is provided in each of a plurality of regions demarcated by the plurality of control lines and the plurality of data lines and electrically connected to the corresponding control line and the corresponding data line, and detects radiation directly or in cooperation with a scintillator; gate drivers electrically connected to the plurality of control lines, respectively; a drive control circuit which generates start signals and clock signals for the plurality of gate drivers, respectively, and converts the generated plurality of start signals and plurality of clock signals into first serial data; a drive timing generation circuit which is electrically connected between the drive control circuit and the plurality of gate drivers, restores the first serial data to the plurality of start signals and the plurality of clock signals, and transmits the restored start signals and clock signals to the corresponding gate drivers; readout circuits electrically connected to the plurality of data lines, respectively; an image data signal transfer circuit which converts image data signals from the respective plurality of readout circuits into second serial data; and a readout control circuit which restores the second serial data to the plurality of image data signals.
TOSHIBA ELECTRON TUBES & DEVICES CO., LTD. (Japan)
Inventor
Onihashi, Hiroshi
Abstract
The radiation detector according to one embodiment of the present invention is provided with: a substrate; a plurality of control lines which are disposed on the substrate, and which extend in a first direction; a plurality of data lines which are disposed on the substrate, and which extend in a second direction that intersects with the first direction; photoelectric conversion units each of which disposed in one of areas segmented by the plurality of control lines and the plurality of data lines, and each of which having a photoelectric conversion element and a thin-film transistor that is electrically connected to a corresponding one of the control lines and a corresponding one of the data lines; a control circuit which is electrically connected to the plurality of control lines, and which switches the plurality of thin-film transistors between ON state and OFF state; a signal detection circuit which is electrically connected to the plurality of data lines; a reference potential unit which is electrically connected to the signal detection circuit; and a determination unit which is electrically connected to the signal detection unit. When the thin-film transistors are in OFF state, the signal detection unit detects a first current integration value via the data lines, and also detects a second current integration value from the reference potential unit. The determination unit determines a start time for radiation incidence on the basis of the difference between the detected first current integration value and the detected second current integration value.
TOSHIBA ELECTRON TUBES & DEVICES CO., LTD. (Japan)
Inventor
Nakabayashi, Hidetaka
Anno, Hidero
Abstract
This rotating anode X-ray tube is provided with: a fixed shaft having a central axis (A); a rotor; a cathode (60) provided with an electron focusing cup which is provided with a flat first surface (60A) and a groove part open at the first surface side, said cathode being further provided with a filament (61) which is accommodated in the groove part, and which emits electrons; and an anode target (50) which is connected to the rotor, and which is provided with a second surface (50A) which faces the first surfaces, and generates X-rays as a result of the electrons emitted from the filament colliding therewith. The central-axis-side end (E1) of the first surface is positioned on a first orthogonal plane (I). The first surface is inclined from the first orthogonal plane. The central-axis-side end (E2) of the second surface is positioned on a second orthogonal plane (II). The second surface is either on the second orthogonal plane, or inclined from the second orthogonal plane.
TOSHIBA ELECTRON TUBES & DEVICES CO., LTD. (Japan)
Inventor
Nakabayashi, Hidetaka
Anno, Hidero
Abstract
This rotating anode X-ray tube is provided with a fixed shaft, a rotor, a cathode, an anode target, and a vacuum envelope. The cathode is provided with a first filament, and an electron focusing cup. The electron focusing cup is provided with a first inclined flat surface, a second inclined flat surface, a valley bottom section, a first focusing groove part, and a first accommodation groove part. The expressions α>0˚, β>0˚, and α+β≤21˚ are satisfied.
TOSHIBA ELECTRON TUBES & DEVICES CO., LTD. (Japan)
Inventor
Kato, Takeshi
Hara, Takanobu
Miyamura, Masayoshi
Abstract
An X-ray tube according to an embodiment is provided with: a negative electrode (11) for releasing electrons; a positive electrode (12) having a positive electrode target (12a) which is caused to release X-rays by being impacted by the electrons released from the negative electrode (11); a glass container (16) accommodating the negative electrode (11) and the positive electrode (12); a positive electrode rod (14) extending from the positive electrode (12) to the exterior of the glass container (16); an annular metal member (17) through which the positive electrode rod (14) is inserted, the metal member (17) connecting the positive electrode (12) and the glass container (16) to each other and maintaining a vacuum in the interior of the glass container (16); and an electrically insulating mold resin member (15) filling a space (S) formed between the positive electrode rod (14) and the outer surface of the glass container (16) and the metal member (17).
Toshiba Electron Tubes & Devices Co., Ltd. (Japan)
Inventor
Takahashi, Naoki
Shimono, Takashi
Anno, Hidero
Abstract
According to one embodiment, an X-ray tube includes a cathode including a filament, an anode target, and an envelope. The cathode includes a metal lead wire supporter which is exposed outside the envelope, which is configured as a part of the envelope, and to which a lead wire as a power supplier to the filament is attached such that the lead wire passes both inside and outside of the envelope, and a metal filament supporter fixed on the lead wire supporter, being in contact with the lead wire supporter, and supporting the filament.
TOSHIBA ELECTRON TUBES & DEVICES CO., LTD. (Japan)
Inventor
Shimba, Yuichi
Abstract
An array substrate according to an embodiment is provided with: a substrate having a first side extending in a first direction, and a second side extending in a second direction intersecting with the first direction; a plurality of control lines provided on the substrate and each extending in the first direction; a plurality of data lines provided on the substrate and each extending in the second direction; a photoelectric converter provided in each of a plurality of areas defined by the control lines and the data lines; first areas provided in a peripheral area of the substrate adjacent to the second side, and in which a plurality of first wire pads electrically connected to the control lines are provided; and second areas provided in a peripheral area of the substrate adjacent to the first side, and in which a plurality of second wire pads electrically connected to the data lines are provided. The distance between the first side and the center line, extending in the first direction, of each first area is longer than the distance between the first side and the center line, extending in the first direction, of areas including the plurality of control lines electrically connected to the plurality of first wire pads provided in the first area, and/or the distance between the second side and the center line, extending in the second direction, of each second area is longer than the distance between the second side and the center line, extending in the second direction, of areas including the plurality of data line electrically connected to the plurality of second wire pads provided in the second area.
G01T 7/00 - Details of radiation-measuring instruments
H01L 27/14 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy
TOSHIBA ELECTRON TUBES & DEVICES CO., LTD. (Japan)
Inventor
Anno, Hidero
Ishihara, Tomonari
Abstract
The X-ray tube device according to one embodiment of the invention comprises: a positive pole target (35) provided with a target surface wherewith an electron collides to generate X-ray; a negative pole (36) provided with a plurality of electron generation sources, each emitting an electron; a vacuum enclosing vessel (31) housing the negative pole and the positive pole target, and sealed in such a manner that the interior is vacuum-tight; and a quadrupole magnetic field generation unit (60), which forms a magnetic field by being supplied a direct current from a power source, is disposed outside of the vacuum enclosing vessel, and is constituted from a quadrupole surrounding the periphery of the electron trajectory of each of the electrons emitted from each of the plurality of electron generation sources.
TOSHIBA ELECTRON TUBES & DEVICES CO., LTD. (Japan)
Inventor
Ishihara, Tomonari
Anno, Hidero
Abstract
The X-ray tube device according to one embodiment of the invention comprises: a negative pole (36) emitting an electron in the electron trajectory direction; a positive pole target (35) provided so as to face the negative pole, and having a target surface wherewith the electron emitted from the negative pole collides to generate X-ray; a vacuum enclosing vessel (31) housing the negative pole and the positive pole target, and sealed in such a manner that the interior is vacuum-tight; and a quadrupole magnetic field generation unit (60), which forms a magnetic field by being supplied a direct current from a power source, is disposed outside of the vacuum enclosing vessel so as to be eccentric from a straight line that follows the electron trajectory, and is constituted from a quadrupole surrounding the periphery of a portion of the electron trajectory.
H01J 35/30 - Tubes wherein the point of impact of the cathode ray on the anode or anticathode is movable relative to the surface thereof by deflection of the cathode ray
TOSHIBA ELECTRON TUBES & DEVICES CO., LTD. (Japan)
Inventor
Nakabayashi, Hidetaka
Kumadaki, Hiroyuki
Anno, Hidero
Abstract
A rotating anode X-ray tube according to the present embodiment is provided with: a rotating cylinder (5) to which an anode target is fixed; a rotating shaft (7) coaxially fixed to an inner side of the rotating cylinder; an anode stator (18) that is disposed between the rotating cylinder and the rotating shaft and that is formed of one of a magnetic material member formed of a magnetic material and extending in an axial direction and a heat-transfer enhancement member having a heat conductivity higher than that of the surroundings thereof; ball bearings (11, 12) that are provided between the anode stator and the rotating shaft; and an inner member (19) that is disposed between the anode stator (18) and the rotating shaft (7), that is connected to the anode stator (18) via a connection member, and that is formed of one of the magnetic material member and the heat-transfer enhancement member, the one being different from the member forming the anode stator.
TOSHIBA ELECTRON TUBES & DEVICES CO., LTD. (Japan)
Inventor
Yonezawa, Tetsuya
Abstract
Provided is a rotating anode type X-ray tube allowing for a longer life span. In one embodiment of the present invention, the rotating anode type X-ray tube comprises a fixed axis (10) having a first surface intersecting with a parallel direction to the rotation axis, and a rotating body (20) supported by dynamic pressure bearings having a lubricant (M) filled in the gap to the fixed axis (10). The rotating body (20) comprises a first cylinder (21) having a second surface intersecting with the parallel direction to the rotation axis, a second cylinder (22) in contact with the second surface while facing the first surface through the lubricant (M), and a third cylinder (23) located on the opposite side from the first surface and the second surface while sandwiching the second cylinder (22) therebetween. A first threaded portion provided on the inner surface of the first cylinder (21) is tightened onto a second threaded portion provided on the outer peripheral surface of the third cylinder (23). A screw member (S4) is screwed into a third threaded portion provided on an internal peripheral surface of a hole passing through the third cylinder (23) in a parallel direction to the rotation axis. The forward end of the screw member (S4) pushes the second cylinder (22) against the second surface.
TOSHIBA ELECTRON TUBES & DEVICES CO., LTD. (Japan)
Inventor
Homma Katsuhisa
Takatori Koji
Abstract
A radiation detector according to an embodiment of the present invention comprises: an array substrate that includes a substrate and a plurality of photoelectric conversion elements that are provided on one surface of the substrate; a scintillator layer that is provided on the plurality of photoelectric conversion elements and includes a first phosphor material; a wall that is provided on the one surface of the substrate and surrounds the scintillator layer; and a filler part that is provided between the scintillator layer and the wall and includes a second phosphor material. The scintillator layer has, in a peripheral part thereof, a sloping portion the thickness of which gradually decreases toward the outside of the scintillator layer. The filler part is provided on the sloping portion.
G01T 1/20 - Measuring radiation intensity with scintillation detectors
G21K 4/00 - Conversion screens for the conversion of the spatial distribution of particles or ionising radiation into visible images, e.g. fluoroscopic screens
TOSHIBA ELECTRON TUBES & DEVICES CO., LTD. (Japan)
Inventor
Yoshida, Atsuya
Horiuchi, Hiroshi
Abstract
A radiation detector (1) is provided with: a photoelectric conversion substrate (21) having a plurality of light receiving elements disposed thereon; and a phosphor layer, which is formed on the photoelectric conversion substrate, and which converts radiation into light. Emission spectrum of the phosphor layer has a main peak in a wavelength region having a wavelength of 510-550 nm, and a sub-peak in a wavelength region having a wavelength longer than that of the wavelength region having the main peak.
G01T 1/20 - Measuring radiation intensity with scintillation detectors
C09K 11/00 - Luminescent, e.g. electroluminescent, chemiluminescent, materials
G21K 4/00 - Conversion screens for the conversion of the spatial distribution of particles or ionising radiation into visible images, e.g. fluoroscopic screens
16.
RADIATION DETECTOR AND METHOD FOR MANUFACTURING SAME
TOSHIBA ELECTRON TUBES & DEVICES CO., LTD. (Japan)
Inventor
Homma, Katsuhisa
Takatori, Koji
Horiuchi, Hiroshi
Ichikawa, Satoshi
Abstract
A radiation detector according to one embodiment of the present invention is provided with: an array substrate which comprises a substrate and a plurality of photoelectric conversion elements arranged on one surface of the substrate; a scintillator layer that is arranged on the plurality of photoelectric conversion elements and converts radiation to fluorescence; a wall body which is arranged on the one surface of the substrate and surrounds the scintillator layer; a filling part which is arranged between the scintillator layer and the wall body; and a moisture-proofing body which covers the upper part of the scintillator layer, and wherein a portion near the periphery is bonded to the upper surface of the filling part.
TOSHIBA ELECTRON TUBES & DEVICES CO., LTD. (Japan)
Inventor
Fukushima, Harunobu
Yonezawa, Tetsuya
Hattori, Hitoshi
Abstract
A rotating anode (5) of a rotating anode X-ray tube according to the present invention comprises: an anode target (50) formed on a first surface; a plurality of slits (8) cut around the rotation center axis (11); a ring-shaped groove (52) provided along the inner circumference of said anode target on said first surface; and a plurality of opening holes (7) extending from said first surface toward a second surface of said rotating anode. Said opening holes are respectively in communication with said slits and connected to said ring-shaped groove. A rotating anode X-ray tube capable of stably rotating with reduced thermal stress while also generating high X-ray output is thus obtained.
TOSHIBA ELECTRON TUBES & DEVICES CO., LTD. (Japan)
Inventor
Noji, Takashi
Abstract
This imaging tube comprises a vacuum envelope having an input window and an output window facing the input window, and an input surface (17) disposed on the inner side of the input window. The input surface (17) is provided with a substrate (30) with a surface (30a) on which a plurality of concave portions (33) are formed, an input fluorescent surface (31) with a columnar crystal (36) structure formed on the surface (30a) of the substrate (30), and a photoelectric surface (32) formed on the input fluorescent surface (31). As a result, an imaging tube having a higher resolution than in prior art can be achieved.
TOSHIBA ELECTRON TUBES & DEVICES CO., LTD. (Japan)
Inventor
Horiuchi, Hiroshi
Aida, Hiroshi
Yoshida, Atsuya
Abstract
According to an embodiment of the present invention, a radiation detector is provided with: a photoelectric conversion substrate that converts light into electric signals; and a scintillator layer, which is in contact with the photoelectric conversion substrate, and which converts radiation inputted from the outside into light. The scintillator layer is a fluorescent body containing Tl as an activator agent in CsI, i.e., a halogen compound. When a center region of a scintillator layer forming region is set as a center part, and the outer peripheral region thereof is set as a peripheral part, concentration of the activator agent in the fluorescent body in the in-plane direction of the scintillator layer has the relationship of center part concentration>peripheral part concentration, and the concentration of the activator agent in the fluorescent body is 1.6 mass%±0.4 mass%.
G01T 1/20 - Measuring radiation intensity with scintillation detectors
G01T 1/202 - Measuring radiation intensity with scintillation detectors the detector being a crystal
G21K 4/00 - Conversion screens for the conversion of the spatial distribution of particles or ionising radiation into visible images, e.g. fluoroscopic screens
20.
ARRAY SUBSTRATE, RADIATION DETECTOR, AND WIRING SUBSTRATE
TOSHIBA ELECTRON TUBES & DEVICES CO., LTD. (Japan)
Inventor
Takikawa, Tatsuya
Shimba, Yuichi
Abstract
An array substrate according to an embodiment comprises: a substrate; a plurality of first wiring lines that are provided on a surface of the substrate and that extend in a first direction; a plurality of second wiring lines that are provided on the surface of the substrate and that extend in a second direction intersecting the first direction; thin-film transistors provided in respective regions defined by the plurality of first wiring lines and the plurality of second wiring lines; a protection layer that covers at least the plurality of first wiring lines and the plurality of second wiring lines; and a plurality of connection parts that are provided on the protection layer and/or between the plurality of first wiring lines and the substrate and/or between the plurality of second wiring lines and the substrate, the connection parts being electrically connected to the respective first wiring lines and the respective second wiring lines and including an electroconductive material that has a higher corrosion resistance than the material(s) of the first wiring lines and the second wiring lines. An end surface of each first wiring line and second wiring line on the peripheral edge side of the substrate is covered by the protection layer, and an end surface of each connection part on the peripheral edge side of the substrate is provided at the position of the peripheral edge of the substrate in a planar view.
G01T 1/20 - Measuring radiation intensity with scintillation detectors
G01T 7/00 - Details of radiation-measuring instruments
H01L 21/3205 - Deposition of non-insulating-, e.g. conductive- or resistive-, layers, on insulating layersAfter-treatment of these layers
H01L 21/768 - Applying interconnections to be used for carrying current between separate components within a device
H01L 21/822 - 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 to produce devices, e.g. integrated circuits, each consisting of a plurality of components the substrate being a semiconductor, using silicon technology
H01L 23/522 - Arrangements for conducting electric current within the device in operation from one component to another including external interconnections consisting of a multilayer structure of conductive and insulating layers inseparably formed on the semiconductor body
H01L 27/04 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body
H01L 31/10 - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS - Details thereof in which radiation controls flow of current through the device, e.g. photoresistors characterised by at least one potential-jump barrier or surface barrier, e.g. phototransistors
TOSHIBA ELECTRON TUBES & DEVICES CO., LTD. (Japan)
Inventor
Nakayama, Takeshi
Abstract
A radiation detector relating to an embodiment of the present invention is provided with: a radiation detecting section that converts inputted radiation into signal charges; a circuit section that generates a radiation image on the basis of the signal charges; a supporting board, which supports the radiation detecting section to a first surface, and which supports the circuit section to a second surface on the reverse side of the first surface; and a heat conductive section that is provided between a substrate that is provided in the circuit section, and the second surface.
TOSHIBA ELECTRON TUBES & DEVICES CO., LTD. (Japan)
Inventor
Horiuchi Hiroshi
Aida Hiroshi
Yoshida Atsuya
Abstract
According to an embodiment of the present invention, a radiation detector is provided with a photoelectric conversion substrate, which converts light into electric signals, and a scintillator layer, which is in contact with the photoelectric conversion substrate, and which converts radiation into light, said radiation having been inputted from outside. The scintillator layer is formed of a fluorescent material containing Tl, as an activator, in CsI that is a halide, and concentration of the activator in the fluorescent material is 1.6 mass%±0.4 mass%, and activator concentration distributions in the in-plane direction and film thickness direction are within ±15%.
G01T 1/20 - Measuring radiation intensity with scintillation detectors
C09K 11/00 - Luminescent, e.g. electroluminescent, chemiluminescent, materials
C09K 11/61 - Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials containing fluorine, chlorine, bromine, iodine or unspecified halogen elements
G01T 1/202 - Measuring radiation intensity with scintillation detectors the detector being a crystal
G21K 4/00 - Conversion screens for the conversion of the spatial distribution of particles or ionising radiation into visible images, e.g. fluoroscopic screens
23.
RADIATION DETECTOR AND METHOD FOR MANUFACTURING SAME
TOSHIBA ELECTRON TUBES & DEVICES CO., LTD. (Japan)
Inventor
Homma Katsuhisa
Abstract
A radiation detector according to one embodiment of the present invention is provided with: an array substrate that has a photoelectric conversion element; a scintillator layer that is formed on the photoelectric conversion element and converts radiation into fluorescence; and a moisture-proof layer that has a smoothing layer, which is a continuous film that is formed so as to cover the scintillator layer and contains at least an organic resin material as a main component, and a water vapor barrier layer, which is a continuous film that is formed directly on the surface of the smoothing layer and contains an inorganic material.
TOSHIBA ELECTRON TUBES & DEVICES CO., LTD. (Japan)
Inventor
Yoshida, Atsuya
Abstract
A scintillator panel (50) is provided with a substrate (1) which transmits visible light and a phosphor layer (2) which is present on the surface of the substrate (1) and which is made of a thallium-activated cesium iodide that can convert an incident radiation to visible light. The phosphor layer (2) is covered with a moisture-proof film (3). The phosphor layer (2) is an alternating laminate composed of high thallium concentration layers and low thallium concentration layers that have a thallium concentration lower than that of the high-thallium concentration layers, wherein the thickness of one thallium concentration cycle in the lamination direction is 40nm or less.
G21K 4/00 - Conversion screens for the conversion of the spatial distribution of particles or ionising radiation into visible images, e.g. fluoroscopic screens
G01T 1/20 - Measuring radiation intensity with scintillation detectors
25.
ROTATING POSITIVE ELECTRODE X-RAY TUBE UNIT AND ROTATING POSITIVE ELECTRODE X-RAY TUBE DEVICE
TOSHIBA ELECTRON TUBES & DEVICES CO., LTD. (Japan)
Inventor
Anno, Hidero
Kanagami, Masaji
Imai, Yoshifumi
Shiratori, Yoshiaki
Tamura, Hisayuki
Abstract
A rotating positive electrode X-ray tube unit (5) is provided with a rotating positive electrode X-ray tube (30) and a flow-path-forming body. The rotating positive electrode X-ray tube (30) has a negative electrode, a positive electrode target, and a vacuum enclosure (31). The flow-path-forming body has a shell surrounding the vacuum enclosure (31) in the direction perpendicular to the axial line of the positive electrode target, and forms a channel (CC) for channeling a cooling medium between the flow-path-forming body and the vacuum enclosure. The rotating positive electrode X-ray tube unit (5) is also provided with an X-ray shielding means for preventing X-ray leakage.
TOSHIBA ELECTRON TUBES & DEVICES CO., LTD. (Japan)
Inventor
Ishihara, Tomonari
Akahori, Naoki
Anno, Hidero
Abstract
Provided is an x-ray tube capable of easily and stably performing a focus dimension variable control and a tube current control. The x-ray tube is equipped with a cathode (10) having a filament (11) and a trench portion (16) in which the filament (11) is housed. In the x-ray tube, the trench portion (16) has: a pair of first bottom surfaces (S1) having the same plane as a plane on which the filament (11) is positioned and sandwiching the filament (11) in the width direction (db) of the trench portion (16); and second bottom surfaces (S2) sandwiching the filament (11) and the pair of first bottom surfaces (S1) in the length direction (da) of the trench portion (16) and positioned on the more opening (16a) side of the trench portion (16) than the pair of first bottom surfaces (S1).
TOSHIBA ELECTRON TUBES & DEVICES CO., LTD. (Japan)
Inventor
Iwata, Hiroshi
Ikeda, Mitsushi
Abstract
[Problem] To improve the accuracy of inspecting a TFT array in the manufacture of an X-ray planar detector. [Solution] A TFT array substrate (30) for an X-ray planar detector is manufactured, a common wiring ring (32) being provided around the portion of the X-ray planar detector where a TFT array (21) is to be formed, and the TFT array substrate (30) being connected to signal lines (53) and scan lines (54) via pairs of protective diodes (34) connected in two parallel groups having mutually opposite polarities. When the TFT array substrate (30) for an X-ray planar detector is inspected, a reference bias voltage equal to that of the amplifier of an inspection circuit is applied from external voltage application pads provided in the vicinity of connections between the common wiring ring and the protective diodes on the same side as the signal lines; a signal for switching on a thin-film transistor (41) is applied to scan-line connection pads (24); and electrical signals flowing through the signal lines (53) are read from signal-line connection pads (23).
TOSHIBA ELECTRON TUBES & DEVICES CO., LTD. (Japan)
Inventor
Kanasaki, Hiroshi
Takahashi, Hideyuki
Mimori, Keiichi
Ueki, Masataka
Abstract
An X-ray tube is provided with an anode target, a cathode comprising an electron emission source and a convergence electrode, and a vacuum envelope. The convergence electrode includes a groove portion (16) in which the electron emission source is housed, and converges an electron beam. The groove portion (16) has a nearest inner peripheral wall (53), an upper inner peripheral wall (51) and a lower inner peripheral wall (52). The nearest inner peripheral wall (53) is shorter than the dimension of the electron emission source in the depth direction of the groove portion and faces the electron emission source over the entire periphery with a narrowest clearance therebetween in the width direction of the groove portion. The upper inner peripheral wall (51) is located on the open side of the groove portion from the nearest inner peripheral wall (53) and has a shape wider than the nearest inner peripheral wall (53) in the width direction. The lower inner peripheral wall (52) is located on the side opposite to the upper inner peripheral wall (51) with respect to the nearest inner peripheral wall (53), and has a shape wider than the nearest inner peripheral wall (53) in the width direction.
TOSHIBA ELECTRON TUBES & DEVICES CO., LTD. (Japan)
Inventor
Chiyoma, Hitoshi
Yoshida, Atsuya
Matsuyama, Wataru
Yamamoto, Toyoo
Aida, Hiroshi
Shimba, Yuichi
Abstract
This method for producing a radiation detection panel disposes a photoelectric conversion substrate (21) at the vertically upward side of a vaporization source, and in a state of the vapor deposition surface of the photoelectric conversion substrate being exposed to the vaporization source and being inclined with respect to the vertical axis. By means of the vaporization source, a scintillator material is vaporized and radiated vertically upwards, and the scintillator material is vapor deposited onto the vapor deposition surface, forming a fluorescent body film.
G21K 4/00 - Conversion screens for the conversion of the spatial distribution of particles or ionising radiation into visible images, e.g. fluoroscopic screens
G01T 1/20 - Measuring radiation intensity with scintillation detectors
Toshiba Electron Tubes & Devices Co., Ltd. (Japan)
KABUSHIKI KAISHA TOSHIBA (Japan)
Inventor
Anno, Hidero
Ishihara, Tomonari
Yonezawa, Tetsuya
Fukushima, Harunobu
Tadokoro, Chiharu
Hattori, Hitoshi
Abstract
A coolant device comprises a casing, a radiator unit which is attached to the casing and to a circulatory path wherethrough a coolant fluid circulates and which externally discharges heat from the coolant fluid, and a fan unit which is housed in the casing and which creates an air flow in the periphery of the radiator unit. The upwind side of the radiator unit is exposed to the outside of the casing.
TOSHIBA ELECTRON TUBES & DEVICES CO., LTD. (Japan)
Inventor
Homma, Katsuhisa
Abstract
[Problem] To provide a radiation detector that has excellent adhesion between a scintillator layer and a substrate and between a moisture proof body and a substrate, and that is highly reliable in cold environments and in high-temperature high-humidity environments. [Solution] A radiation detector (11) comprises the following: an array substrate (12) having pixels (17); a scintillator layer (13) formed on the pixels (17); a conductive moisture proof body (15) formed so as to cover the scintillator layer (13); and an adhesion layer (16) that adheres the moisture proof body (15) to the array substrate (12). The array substrate (12) of the radiation detector is divided into at least an active area (A) and an adhesion area (B), the active area (A) is provided with an organic-resin protective film (26a) on the scintillator layer (13) forming surface, and the adhesive area (B) is provided with an inorganic protective film (26b) on the adhesive layer (16) forming surface.
Toshiba Electron Tubes & Devices Co., LTd. (Japan)
Inventor
Onihashi, Hiroshi
Abstract
Disclosed is a flat panel radiation imager refresh operation method capable of refresh operations which efficiently, quickly and with low power consumption, expel charge accumulated in pixels by photoelectric conversion. The control signal in the refresh operation is converted to a multi-pulse form, and the timing is adjusted such that the neighboring switching elements disposed on the same signal line do not switch to ON with the same timing.
G01T 1/20 - Measuring radiation intensity with scintillation detectors
H01L 27/14 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy
Toshiba Electron Tubes & Devices Co., Ltd. (Japan)
Inventor
Aida, Hiroshi
Abstract
Provided is a radiological image detector capable of preventing image deterioration due to TFT malfunction caused by continuously incident X-rays. The detector is provided with a radiation sensor (11) having an image detection unit wherein each of a plurality of pixels arranged on a substrate in two dimensions is connected to one of a plurality of row selection lines and one of a plurality of signal lines; a gate drive circuit (13) which sequentially applies drive voltages to respective row selection lines; a drive control circuit (15) which generates a drive signal for the gate drive circuit (13); a reading circuit (17) which reads image signal information through a signal line connected to a pixel group which is connected to an arbitrary row selection line to which the drive voltage is applied, and reads noise signal information through signal lines connected to all pixels under the condition that no drive voltage is applied to any row selection lines; a read control circuit (18) which generates read signals; and a noise correction circuit (19) which corrects the image signal information on the basis of the noise signal information.
Toshiba Electron Tubes & Devices Co., Ltd. (Japan)
Inventor
Shinba, Yuichi
Homma, Katsuhisa
Abstract
Disclosed are: a highly reliable radiation detector, which has improved adhesion between a scintillator layer and an array substrate comprising a photoelectric conversion element, and is thus not susceptible to deteriorations in the characteristics caused by separation of the scintillator layer; and a method for manufacturing the radiation detector. Specifically disclosed is a radiation detector (11) which comprises: an array substrate (12) that is provided with a photoelectric conversion element (21) for converting fluorescence into an electrical signal and has the outermost layer covered with a protective film (26); a CsI-based scintillator layer (13) that is provided on the protective film (26) and converts the incident radiation into fluorescence; and a reflective layer (14) that is provided on the scintillator layer (13) and reflects the fluorescence from the scintillator layer (13) towards the array substrate (12). In the radiation detector (11), the protective film (26) is formed from an organic acrylic resin material that is a thermoplastic resin.
G01T 1/20 - Measuring radiation intensity with scintillation detectors
G21K 4/00 - Conversion screens for the conversion of the spatial distribution of particles or ionising radiation into visible images, e.g. fluoroscopic screens
H01L 27/14 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy
Toshiba Electron Tubes & Devices Co., Ltd. (Japan)
KABUSHIKI KAISHA TOSHIBA (Japan)
Inventor
Shimono, Takashi
Abstract
Disclosed is an x-ray tube (1), comprising a cathode (10), an anode target (20) that discharges x-rays, a vacuum chamber (30), and a cooling mechanism (60), wherein the heat emitted by the anode target is cooled by the cooling mechanism, and the heat emitted by the cathode is cooled by the cooling mechanism via a ceramic member (33), a second metallic member (32), a heat transfer medium (50), an adapter (40), and a first metallic member (31). It is thus possible to simultaneously cool both the anode target and the cathode with a single cooling mechanism, and to disperse heat externally with a simple structure.
Toshiba Electron Tubes & Devices Co., Ltd. (Japan)
Inventor
Kawasaki, Yasuaki
Yamada, Katsuya
Abstract
A radiation detection device is provided with a radiation detection panel which detects a radiation, a support member (13) which has conductivity and supports the radiation detection panel on one surface thereof, a circuit board which is supported on the other surface of the support member and drives the radiation detection panel, a flexible circuit board (15) which electrically connects the radiation detection panel and the circuit board, a heat insulation material (16) which is disposed between the radiation detection panel and the circuit board, a housing (46) which has conductivity and houses the radiation detection panel, the circuit board, the support member, and the heat insulation material, and a heat conduction member (47) which is housed in the housing and connected to the support member and the housing and brings electric continuity between the support member and the housing to conduct heat from the support member to the housing.
TOSHIBA ELECTRON TUBES & DEVICES CO., LTD. (Japan)
Inventor
Fujieda Shinetsu
Homma Katsuhisa
Suzuki Akiko
Kono Tatsuoki
Abstract
Disclosed is a composition for a reflective film, which is characterized by comprising a polyvinyl acetal resin, an epoxidized plant oil, a solvent, a coupling agent, and titanium oxide.
C08K 5/5435 - Silicon-containing compounds containing oxygen containing oxygen in a ring
C08L 29/14 - Homopolymers or copolymers of acetals or ketals obtained by polymerisation of unsaturated acetals or ketals or by after-treatment of polymers of unsaturated alcohols
C08L 63/00 - Compositions of epoxy resinsCompositions of derivatives of epoxy resins
Toshiba Electron Tubes & Devices Co., Ltd. (Japan)
Inventor
Shimono, Takashi
Abstract
The distance (L1), from the central axis (O) of an X-ray tube in the direction perpendicular to the longitudinal direction of a filament coil (15) to the outer side surface of a cathode electron gun (16), is set shorter than the distance (P1) from the central axis (O) of the X-ray tube in the longitudinal direction of the filament coil (15) to the outer side surface of the cathode electron gun (16), and the distance (L2) from the central axis (O) of the X-ray tube in the direction perpendicular to the longitudinal direction of the filament coil (15) to an X-ray radiation window (20a) is set shorter than the distance (P2) from the central axis (O) of the X-ray tube in the longitudinal direction of the filament coil (15) to an X-ray radiation window (20b). With such an arrangement, an optical element for condensing X-rays can be located at a position close to the focal point of the X-ray tube when the X-rays on the line focus side is used, and thereby condensation efficiency of X-rays can be enhanced.
Toshiba Electron Tubes & Devices Co., Ltd. (Japan)
Inventor
Chiyoma, Hitoshi
Iwata, Hiroshi
Abstract
A radiation detecting device is provided with a light detector (19) having a fluorescent material film for converting radiation into light and a photoelectric conversion element for converting light into an electric signal; a circuit board (13) which electrically drives the light detector and electrically processes an output signal from the light detector; and a connecting board (14). In the connecting board, a flexible circuit board (28) and an IC mounting board (30) are connected to each other. The IC mounting board has flexibility smaller than that of the flexible circuit board, with an integrated circuit semiconductor element (29) mounted on the IC mounting board, and electrically connects the light detector and the circuit board to each other.
Toshiba Electron Tubes & Devices Co., Ltd. (Japan)
Inventor
Homma, Katsuhisa
Chiyoma, Hitoshi
Fujieda, Shinetsu
Sakai, Keiko
Ikagawa, Masakuni
Suzuki, Akiko
Abstract
A radiation detector (11) disclosed as one embodiment of the present invention comprises a substrate (12) having a photoelectric converter (21), a scintillator layer (13) formed on the substrate (12) for converting radiation into fluorescence, a moisture-proof body (15) having a depth at least enough to contain the scintillator layer (13) and provided with a flange portion (33) on the periphery, and an adhesive layer (34) for bonding and hermetically sealing the substrate (12) with the flange portion (33) of the moisture-proof body (15).
Toshiba Electron Tubes & Devices Co., Ltd. (Japan)
Inventor
Homma, Katsuhisa
Fujieda, Shinetsu
Abstract
Disclosed is a radiation detector characterized by comprising a photoelectric converter, a scintillator layer (13) formed on the photoelectric converter and converting radiation into fluorescent light, and a reflective film (14) formed on the scintillator layer and containing light-diffusing particles for reflecting the fluorescent light from the scintillator layer and a binder material for binding the light-diffusing particles. In this reflective film (14), a depletion region which is not filled with the binder material is formed around the light-diffusing particles.
G01T 1/20 - Measuring radiation intensity with scintillation detectors
H01L 27/14 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy
H01L 31/09 - Devices sensitive to infrared, visible or ultra- violet radiation
Toshiba Electron Tubes & Devices Co., Ltd. (Japan)
Inventor
Yoshida, Atsuya
Horiuchi, Hiroshi
Abstract
A resin reflecting sheet (13) is bonded on one surface of a supporting substrate (12) which transmits radiation, and a resin sheet (14) made of a same material as that of the resin reflecting sheet (13) is bonded on the other surface of the supporting substrate (12). A fluorescent layer (15), which converts radiation into visible light is formed on the resin reflecting sheet (13) on the one surface of the supporting substrate (12). The fluorescent layer (15) is surrounded by a moisture prevention layer (17) covering the fluorescent layer (15) and the resin reflecting sheet (13). By arranging the resin reflecting sheet (13) between the supporting substrate (12) and the fluorescent layer (15), a scintillator panel (11) having high sensitivity characteristics and stable qualities can be provided at a lower cost.
G21K 4/00 - Conversion screens for the conversion of the spatial distribution of particles or ionising radiation into visible images, e.g. fluoroscopic screens
G01T 1/20 - Measuring radiation intensity with scintillation detectors
H01L 27/14 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy
Toshiba Electron Tubes & Devices Co., Ltd. (Japan)
Inventor
Yamagishi, Shirofumi
Chiyoma, Hitoshi
Abstract
A radiation detector (11) includes a scintillator layer (21) formed directly on the entire light reception unit (19) of a plurality of photoelectric conversion substrates (14). A gap (S) and a step (D) formed between adjacent photoelectric conversion substrates (14) are such that the affect by the gap (S) and the step (D) is within a range equivalent to an affect of one photoelectric conversion element. That is, the gap (S) between adjacent photoelectric conversion substrates (14) is not greater than 133 &mgr;m and the step (D) between adjacent photoelectric conversion substrates (14) is not greater than 100 &mgr;m. The scintillator layer (21) can be formed directly on the entire light reception unit (19) of the photoelectric conversion substrates (14). This prevents degradation of the MTF and sensitivity and reduces the manufacturing cost.
G01T 1/20 - Measuring radiation intensity with scintillation detectors
A61B 6/00 - Apparatus or devices for radiation diagnosisApparatus or devices for radiation diagnosis combined with radiation therapy equipment
H01L 27/14 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy
H01L 31/09 - Devices sensitive to infrared, visible or ultra- violet radiation
Toshiba Electron Tubes & Devices Co., Ltd. (Japan)
Inventor
Yonezawa, Tetsuya
Nakamuta, Hironori
Takahashi, Ryoichi
Yoshii, Yasuo
Hattori, Hitoshi
Ito, Yasutaka
Abstract
A rotary anode type X ray tube comprising a fixed body having a radial sliding bearing surface (S1) on the side face and an internal channel for allowing cooling liquid (20) to pass, a body of rotation (600) including a disklike large diameter portion (610) having a recess (51a) to which one end portion of the fixed body is fitted across a gap and constituting an anode target (50), and a small diameter portion (620) having a radial sliding bearing surface (S2) surrounding the side face of the fixed body and opposing the above-mentioned radial sliding bearing surface across a gas in the inner surface and integrated with the large diameter portion at one end portion, lubricant filling the gap, a cathode (80) arranged oppositely to the anode target of the large diameter portion, and a vacuum enclosure (90) storing the fixed body, the body of rotation, the lubricant and the cathode and securing the fixed body at the other end portion thereof located on the side opposite to the one end portion of the fixed body being fitted in the recess.
Toshiba Electron Tubes & Devices Co., Ltd. (Japan)
Inventor
Hikida, Noriyuki
Ishizawa, Kazuya
Seki, Eiji
Abstract
Disclosed is a proportional counter wherein nitrogen and hydrogen are contained in a gas (13) which is sealed in an envelope (12). By adding nitrogen, possibility of polymerization of the additional gas by radiation disappears, and a higher resolution is attained when compared with the cases where carbon dioxide is used as an additional gas. By adding hydrogen, gas gain variations are suppressed.
Toshiba Electron Tubes & Devices Co., Ltd. (Japan)
Inventor
Wakamatsu, Shunsuke
Abstract
A scintillator panel comprises a support base plate (16) through which radiation can pass, a light-reflective material dispersion film (17) which is provided flatly on the support base plate and in which light-reflective material particles (18) for reflecting visible light are dispersed, and a scintillator layer (19) for converting incident radiation into visible light is provided on the light-reflective material dispersion film.
G01T 1/20 - Measuring radiation intensity with scintillation detectors
C09K 11/00 - Luminescent, e.g. electroluminescent, chemiluminescent, materials
G21K 4/00 - Conversion screens for the conversion of the spatial distribution of particles or ionising radiation into visible images, e.g. fluoroscopic screens
47.
RADIATION DETECTOR AND METHOD FOR MANUFACTURING THE SAME
Toshiba Electron Tubes & Devices Co., Ltd. (Japan)
Inventor
Horiuchi, Hiroshi
Abstract
A light-receiving portion (15) of a photoelectric conversion substrate (12) which is arranged on the front face side of a base (18), a substrate-side electrode pad (16), a base-side electrode pad (23) and a wiring (25) are integrally covered with a protective layer (27). A scintillator layer (29) is formed on the surface of the protective layer (27). The protective layer (27) prevents corrosion of a photoelectric converter (14) in the light-receiving portion (15), the electrode pads (16, 23) and the wiring (25). By being integrally covered with the protective layer (27), the light-receiving portion (15) of the photoelectric conversion substrate (12) and the substrate-side electrode pad (16) can be arranged closer to each other, thereby enabling miniaturization of the device or expansion of the light-receiving portion (15).
G01T 1/20 - Measuring radiation intensity with scintillation detectors
H01L 27/14 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy
H01L 31/09 - Devices sensitive to infrared, visible or ultra- violet radiation
Toshiba Electron Tubes & Devices Co., Ltd. (Japan)
Inventor
Aoki, Nobutada
Kakutani, Akiko
Abstract
Provided are an X-ray source for emitting a characteristic X-ray, and a fluorescent X-ray analyzing device using the X-ray source. A secondary target (119) is superimposed on a primary target (118). An electron beam (115) generated by an electron gun (114) is incident on the primary target (118), and this primary target (118) transmits and emits a continuous X-ray. The second target (119) transmits and emits a characteristic X-ray (121), which is excited with the continuous X-ray emitted from the primary target (118). The primary target (118) and the secondary target (119) are superimposed to make the continuous X-ray emitted from the primary target (118), efficient for the excitation of the secondary target (119) thereby to generate the characteristic X-ray (121) efficiently.
G01N 23/223 - Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups , or by measuring secondary emission from the material by irradiating the sample with X-rays or gamma-rays and by measuring X-ray fluorescence
H01J 35/10 - Rotary anodesArrangements for rotating anodesCooling rotary anodes
H01J 35/26 - Tubes wherein the point of impact of the cathode ray on the anode or anticathode is movable relative to the surface thereof by rotation of the anode or anticathode
Toshiba Electron Tubes & Devices Co., Ltd. (Japan)
Inventor
Takahashi, Junichi
Kimijima, Takayuki
Odaka, Kentaro
Abstract
A magnetic sensor (32) detects an external magnetic field (m) to invade from the outside of an X-ray image tube (11) into an electron lens area (23), and a coil (33) arranged in an input face area (21) of the X-ray image tube (11) generates a magnetic field to cancel the external magnetic field (m) so that the influence of the external magnetic field (m) is eliminated to correct the distortion. The magnetic sensor (32) is arranged in the area, which is surrounded by a magnetic shield (20) of the X-ray image tube (11), and in the outer circumference area on the side of the electronic lens area (23) spaced from the input face area (21) of the X-ray image tube (11). The magnetic sensor (32) is less influenced by the magnetic field, which is generated by the coil (33) arranged on the side of the input face area (21) of the X-ray image tube (11), so that it detects the external magnetic field (m) to invade into the electron lens area (23), highly precisely. As a result, a distortion correcting device (31) of the X-ray image tube (11) can correct the distortion automatically.
patents
