Patents by Inventor Munetaka Kato
Munetaka Kato has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20220113435Abstract: In a sensor substrate, a plurality of pixels are formed in a pixel region of a first surface of a flexible base material, and a terminal portion for electrically connecting a cable is provided in the terminal region of the first surface. A conversion layer is provided outside the terminal region of the base material and converts radiation into light. A reinforcing member is provided on a second surface of the base material to reinforce the strength of the base material.Type: ApplicationFiled: December 20, 2021Publication date: April 14, 2022Inventors: Shinichi USHIKURA, Munetaka KATO, Tatsunori TANIMOTO
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Patent number: 11221421Abstract: A radiation detector includes a flexible substrate, plural pixels provided on the substrate and each including a photoelectric conversion element, a scintillator stacked on the substrate and including plural columnar crystals, and a bending suppression member configured to suppress bending of the substrate. The bending suppression member has a rigidity that satisfies R?L?r/tan ?+4r·{(L?r/tan ?)2?(d/2)2}1/2/d, wherein L is an average height of the columnar crystals, r is an average radius of the columnar crystals, d is an average interval between the columnar crystals, ? is an average tip angle of the columnar crystals, and R is a radius of curvature of bending occurring in the substrate due to the weight of the scintillator.Type: GrantFiled: September 11, 2020Date of Patent: January 11, 2022Assignee: FUJIFILM CorporationInventors: Naoto Iwakiri, Munetaka Kato, Haruyasu Nakatsugawa
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Publication number: 20210364658Abstract: A method of manufacturing a radiation detector includes: forming a substrate in which a flexible base material is provided via a peeling layer on a support body and plural pixels that accumulate electric charges generated in response to light converted from radiation are provided in a pixel region of the base material; forming a conversion layer for converting the radiation into light on a surface of the base material; providing a first reinforcing substrate on a surface of the conversion layer opposite to a surface on the substrate side; peeling the substrate provided with the conversion layer and the first reinforcing substrate from the support body; providing a second reinforcing substrate on a surface of the substrate peeled from the support body; and peeling the first reinforcing substrate from the substrate provided with the conversion layer after providing the second reinforcing substrate.Type: ApplicationFiled: August 5, 2021Publication date: November 25, 2021Inventors: Shinichi USHIKURA, Munetaka KATO, Keiichi AKAMATSU, Haruyasu NAKATSUGAWA
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Publication number: 20210333421Abstract: Provided are a radiation detector, a radiographic imaging apparatus, and a manufacturing method that include a TFT substrate in which a plurality of pixels that accumulate electric charges generated depending on light converted from radiation are formed in a pixel region of a first surface of a flexible base material and a terminal region of the first surface is provided with a terminal for electrically connecting a flexible cable; a conversion layer that is provided outside the terminal region on the first surface of the base material to convert the radiation into light; a first reinforcing substrate that is provided on a surface of the conversion layer opposite to a surface on a TFT substrate side and has a higher stiffness than the base material; and a second reinforcing substrate that is provided on a second surface of the base material opposite to the first surface to cover a surface larger than the first reinforcing substrate, and that are capable of suppressing that a defect occurs in the substrate andType: ApplicationFiled: May 14, 2021Publication date: October 28, 2021Inventors: Shinichi USHIKURA, Munetaka KATO, Keiichi AKAMATSU, Haruyasu NAKATSUGAWA
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Publication number: 20210259650Abstract: The radiation detector includes a sensor substrate and a reinforcing substrate. In the sensor substrate, a plurality of pixels for accumulating the charges generated according to light converted from radiation are formed in the pixel region on the first surface of the flexible base material, and the terminal for electrically connecting a flexible cable to the first surface is provided. The reinforcing substrate is provided on the second surface opposite to the first surface of the base material in a region excluding at least the facing region facing the terminal to reinforce the stiffness of the base material.Type: ApplicationFiled: February 16, 2021Publication date: August 26, 2021Applicant: FUJIFILM CorporationInventors: Shinichi USHIKURA, Munetaka KATO, Haruyasu NAKATSUGAWA
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Publication number: 20210215836Abstract: Provided is a radiation detector including a substrate including a sensor unit layer having a plurality of pixels for accumulating electric charges generated depending on light converted from radiation in a pixel region of a flexible base material; a conversion layer that is provided on a surface side of the base material provided with the pixel region to convert the radiation into light; and a fixing member that is provided closer to the substrate side than the conversion layer to fix the sensor unit layer to the base material.Type: ApplicationFiled: March 26, 2021Publication date: July 15, 2021Applicant: FUJIFILM CorporationInventors: Munetaka KATO, Haruyasu NAKATSUGAWA
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Publication number: 20210202125Abstract: A sensor substrate is provided with a plurality of pixels for accumulating electrical charges generated depending on light converted from radiation in a pixel region of a flexible base material. A circuit unit includes at least one of a driving substrate, a signal processing substrate, or a control substrate and is electrically connected to the sensor substrate. A fixing plate fixes the circuit unit. A conversion layer is provided on a first surface opposite to a second surface of the fixing plate on which the circuit unit is fixed, is provided in a state where the second surface opposite to the fixing plate side faces the first surface of the base material on which the pixels are provided, and converts radiation into light. A housing houses the sensor substrate, the circuit unit, the fixing plate, and the conversion layer.Type: ApplicationFiled: December 22, 2020Publication date: July 1, 2021Applicant: FUJIFILM CorporationInventors: Haruyasu NAKATSUGAWA, Shinichi USHIKURA, Munetaka KATO
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Publication number: 20210096271Abstract: A radiation detector including: a substrate formed with plural pixels that accumulate electrical charges generated in response to light converted from radiation in a pixel region at an opposite-side surface of a base member to a surface including a fine particle layer; the base member being flexible and is made of resin and that includes a fine particle layer containing inorganic fine particles having a mean particle size of from 0.05 ?m to 2.5 ?m, a conversion layer provided at the surface of the base member provided with the pixel region and configured to convert the radiation into light; and a reinforcement substrate provided to at least one out of a surface on the substrate side of a stacked body configured by stacking the substrate and the conversion layer, or a surface on the conversion layer side of the stacked body.Type: ApplicationFiled: September 18, 2020Publication date: April 1, 2021Applicant: FUJIFILM CorporationInventors: Yoshihiro OKADA, Keiichi AKAMATSU, Shinichi USHIKURA, Munetaka KATO, Haruyasu NAKATSUGAWA
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Publication number: 20210093264Abstract: Provided is a radiation detector having a portion in which a substrate in which a plurality of pixels for accumulating electric charges generated in accordance with light converted from radiation are formed in a pixel region, a conversion layer that converts radiation into light, a reflective pressure sensitive adhesive layer that reflects the light converted by the conversion layer, and an adhesive layer that covering a region including a region ranging from an end part of the pressure sensitive adhesive layer to a surface of the substrate are provided in this order.Type: ApplicationFiled: December 11, 2020Publication date: April 1, 2021Applicant: FUJIFILM CorporationInventor: Munetaka KATO
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Publication number: 20210003722Abstract: A radiation detector including: a substrate formed with a plural pixels in pixel region of a flexible base member, the plural pixels accumulates charges generated in response to light converted from radiation; a conversion layer provided at a surface to which the pixel region is provided on the base member, the conversion layer converts the radiation into light; and a reinforcement substrate provided at a surface of the conversion layer that faces a surface of the substrate side, the reinforcement substrate contains a material having a yield point and has a higher rigidity than the base member.Type: ApplicationFiled: September 18, 2020Publication date: January 7, 2021Applicant: FUJIFILM CorporationInventors: Munetaka KATO, Shinichi USHIKURA, Yoshihiro OKADA, Keiichi AKAMATSU, Haruyasu NAKATSUGAWA
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Publication number: 20210003515Abstract: A radiation detector including: a sensor substrate including a flexible base member and a layer provided on a first surface of the base member and formed with plural pixels that accumulates electrical charge generated in response to light converted from radiation; a conversion layer provided on the first surface side of the sensor substrate, the conversion layer converts radiation into the light; and an elastic layer provided on the opposite side of the conversion layer to a side provided with the sensor substrate, the elastic layer having a greater restoring force with respect to bending than the sensor substrate.Type: ApplicationFiled: September 18, 2020Publication date: January 7, 2021Applicant: FUJIFILM CorporationInventors: Shinichi USHIKURA, Munetaka KATO, Haruyasu NAKATSUGAWA, Keiichi AKAMATSU
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Publication number: 20200408935Abstract: A radiation detector includes a flexible substrate, plural pixels provided on the substrate and each including a photoelectric conversion element, a scintillator stacked on the substrate, and a bending suppression member configured to suppress bending of the substrate. The bending suppression member has a rigidity that satisfies R?X2/2ZL wherein X is a pixel size, ZL is a critical deformation amount of the pixel through bending of the substrate, and R is a radius of curvature of bending occurring in the substrate due to the weight of the scintillator.Type: ApplicationFiled: September 11, 2020Publication date: December 31, 2020Applicant: FUJIFILM CorporationInventors: Naoto IWAKIRI, Munetaka KATO, Haruyasu NAKATSUGAWA, Keiichi AKAMATSU
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Publication number: 20200408938Abstract: A radiation detector includes a flexible substrate, plural pixels provided on the substrate and each including a photoelectric conversion element, a scintillator stacked on the substrate and including plural columnar crystals, and a bending suppression member configured to suppress bending of the substrate. The bending suppression member has a rigidity that satisfies R?L?r/tan ?+4r·{(L?r/tan ?)2?(d/2)2}1/2/d, wherein L is an average height of the columnar crystals, r is an average radius of the columnar crystals, d is an average interval between the columnar crystals, ? is an average tip angle of the columnar crystals, and R is a radius of curvature of bending occurring in the substrate due to the weight of the scintillator.Type: ApplicationFiled: September 11, 2020Publication date: December 31, 2020Applicant: FUJIFILM CorporationInventors: Naoto IWAKIRI, Munetaka KATO, Haruyasu NAKATSUGAWA
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Publication number: 20200049841Abstract: A radiation detector includes a substrate having a pixel region on a first surface of a flexible and resinous base material, a conversion layer that is provided in a partial region, including the pixel region, of the first surface and converts radiation into light, an electrical charge discharge layer that is provided on at least one surface of a surface, on the conversion layer side, in a laminate in which the substrate and the conversion layer are laminated, or a second surface opposite to the first surface of the base material, and the wiring line that is electrically connected to the electrical charge discharge layer, the base material has a through-hole provided in a region corresponding to a region other than the partial region, and the wiring line passes through the through-hole.Type: ApplicationFiled: July 9, 2019Publication date: February 13, 2020Inventor: Munetaka KATO
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Publication number: 20190298282Abstract: Provided are a radiation detector and a radiographic imaging apparatus that can suppress peeling of an end part of a reflective layer. The radiation detector includes a portion in which a TFT substrate; a pixel array that is provided in a pixel region of the TFT substrate and that has a plurality of pixels for accumulating electric charges generated in accordance with light converted from radiation; a conversion layer that converts the radiation into light; a light-transmissive pressure sensitive adhesive layer; a reflective layer that reflects the light converted by the conversion layer; and an adhesive layer that covers at least a region ranging from an end part of the reflective layer to a surface of the substrate are provided in order.Type: ApplicationFiled: June 19, 2019Publication date: October 3, 2019Applicant: FUJIFILM CorporationInventors: Munetaka KATO, Keiichi AKAMATSU
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Publication number: 20190298283Abstract: Provided are a radiation detector and a radiographic imaging apparatus through which a high-quality radiographic image can be obtained. The radiation detector includes a portion in which a pixel array that has a plurality of pixels for accumulating electric charges generated in accordance with light converted from radiation; a conversion layer that converts the radiation into light; a light-transmissive pressure sensitive adhesive layer having a thickness of 2 ?m to 7 ?m; and a reflective layer that reflects the light converted by the conversion layer to a TFT substrate are provided in order.Type: ApplicationFiled: June 19, 2019Publication date: October 3, 2019Applicant: FUJIFILM CorporationInventors: Munetaka Kato, Keiichi Akamatsu
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Patent number: 9465116Abstract: A monocoque-structured housing accommodates a photoelectric conversion panel, a scintillator, and a circuit board in this order from an X-ray incidence side. The scintillator contains cesium iodide and converts X-rays into visible light. The scintillator is vapor-deposited on the photoelectric conversion panel. A plurality of pixels that photoelectrically convert the visible light into charges are formed in the photoelectric conversion panel. A signal processor, which reads out the charge from each pixel and generates image data, is mounted on the circuit board. A gap layer is formed between the scintillator and the circuit board.Type: GrantFiled: March 26, 2015Date of Patent: October 11, 2016Assignee: FUJIFILM CorporationInventors: Fumito Nariyuki, Toshiyuki Nabeta, Yoshihiro Okada, Hirotaka Watano, Munetaka Kato, Haruyasu Nakatsugawa
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Publication number: 20150204986Abstract: A monocoque-structured housing accommodates a photoelectric conversion panel, a scintillator, and a circuit board in this order from an X-ray incidence side. The scintillator contains cesium iodide and converts X-rays into visible light. The scintillator is vapor-deposited on the photoelectric conversion panel. A plurality of pixels that photoelectrically convert the visible light into charges are formed in the photoelectric conversion panel. A signal processor, which reads out the charge from each pixel and generates image data, is mounted on the circuit board. A gap layer is formed between the scintillator and the circuit board.Type: ApplicationFiled: March 26, 2015Publication date: July 23, 2015Applicant: FUJIFILM CorporationInventors: Fumito NARIYUKI, Toshiyuki NABETA, Yoshihiro OKADA, Hirotaka WATANO, Munetaka KATO, Haruyasu NAKATSUGAWA
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Patent number: 9006662Abstract: A scintillator includes a plurality of columnar crystals. A surface protection film is made of poly-para-xylyene and covers a surface of the scintillator, and the front ends of the columnar crystals penetrate thereinto. A photoelectric conversion panel includes a glass substrate and an element unit formed on the glass substrate. The element unit includes a plurality of pixels, is disposed opposite to the front ends of the columnar crystals, and detects visible light which is emitted from the front ends and is transmitted through the surface protection film in a light receiving region of each pixel so as to be converted into electric charge. To improve an SN ratio, a penetration amount P of the front end into the surface protection film and an area A of the light receiving region of each pixel are set to satisfy a relationship of 0 m?1<P/A?1.4×103 m?1.Type: GrantFiled: May 6, 2013Date of Patent: April 14, 2015Assignee: FUJIFILM CorporationInventors: Munetaka Kato, Shinichiro Sonoda, Seiji Yamashita
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Publication number: 20140001367Abstract: A ghost is reduced while improving the sensitivity. A scintillator has a plurality of columnar crystals formed of thallium-activated cesium iodide, and converts X-rays into visible light and emits the visible light from the distal end of the columnar crystal. The photoelectric conversion panel has a plurality of photodiodes formed of amorphous silicon to generate electric charges by detecting the visible light emitted from the scintillator. Assuming that the maximum emission intensity of the scintillator is I1, a wavelength at which the maximum emission intensity is obtained is WP, and the emission intensity at a wavelength of 400 nm is I2, I2/I1?0.1 and 540 nm?WP<570 nm are satisfied.Type: ApplicationFiled: June 6, 2013Publication date: January 2, 2014Inventors: Akihiro ANZAI, Munetaka KATO