Patents by Inventor Keisuke Koga
Keisuke Koga 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: 20240107157Abstract: The present disclosure relates to a solid-state imaging device, a method for driving the solid-state imaging device, and an electronic device capable of improving auto-focusing accuracy by using a phase difference signal obtained by using a photoelectric conversion film. The solid-state imaging device includes a pixel including a photoelectric conversion portion having a structure where a photoelectric conversion film is interposed by an upper electrode on the photoelectric conversion film and a lower electrode under the photoelectric conversion film. The upper electrode is divided into a first upper electrode and a second upper electrode. The present disclosure can be applied to, for example, a solid-state imaging device or the like.Type: ApplicationFiled: December 6, 2023Publication date: March 28, 2024Applicant: SONY SEMICONDUCTOR SOLUTIONS CORPORATIONInventors: Keisuke HATANO, Fumihiko KOGA, Tetsuji YAMAGUCHI, Shinichiro IZAWA
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Patent number: 8857500Abstract: A main body case containing therein an air blower for circulating ambient air and a heat exchanger for exchanging heat between the ambient air circulated by the air blower and inside air, flange provided in main body case and having wall surface joining surface joined to wall surface where main body case is arranged, and cover attached to flange, having a louver in a side of the inside air, and a plurality of opening holes in a side of the ambient air and covering the ambient air side of main body case, thereby making an attachment and a detachment of cover easy, and achieving a reduction of a maintenance work.Type: GrantFiled: October 16, 2009Date of Patent: October 14, 2014Assignee: Panasonic CorporationInventors: Keisuke Tsuji, Mutsuhiko Matsumoto, Nobuyuki Yasui, Hiroshi Shibata, Naoyuki Funada, Yuuji Nakano, Takahiro Sahashi, Keisuke Hagimoto, Hirotaka Soga, Keisuke Koga
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Patent number: 8713959Abstract: A heat generating body box housing refrigeration device includes a first refrigerant cycle in which a first condenser and a first evaporator are connected by a first refrigerant liquid pipe and a first refrigerant steam pipe and a second refrigerant cycle in which a second condenser and a second evaporator are connected by a second refrigerant liquid pipe and a second refrigerant steam pipe. The first refrigerant liquid pipe is connected between a first joint and a second joint, the first refrigerant steam pipe is connected between a third joint and a fourth joint, the second refrigerant liquid pipe is connected between a fifth joint and a sixth joint, and the second refrigerant steam pipe is connected between a seventh joint and an eighth joint.Type: GrantFiled: November 19, 2010Date of Patent: May 6, 2014Assignee: Panasonic CorporationInventors: Yuuji Nakano, Hiroshi Shibata, Keisuke Koga, Mutsuhiko Matsumoto, Keisuke Tsuji
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Publication number: 20130223593Abstract: An X-ray sensor according to the present invention includes: a light-transmissive substrate (17); a light-transmissive electrode (21) formed on one surface of the light-transmissive substrate (17); and a photoconductive film (18) including a hole injection blocking layer (22), a field buffer layer (23), a hole trap layer (24), a photoconductive sensitive layer (25) having a charge-multiplying function, and an electron injection blocking layer (26), the layers being sequentially provided on the one surface of the light-transmissive substrate (17) having the light-transmissive electrode (21). The field buffer layer (23) is larger in thickness than a layer composed of the light-transmissive electrode (21) and the hole injection blocking layer (22).Type: ApplicationFiled: November 16, 2011Publication date: August 29, 2013Applicants: NIPPON HOSO KYOKAI, PANASONIC CORPORATIONInventors: Masahiro Jouno, Keisuke Koga, Yuji Ohkawa, Misao Kubota, Kazunori Miyakawa, Kenkichi Tanioka
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Patent number: 8384281Abstract: A matrix-type cold-cathode electron source device includes: an emitter array (3b) in which a plurality of emitters are arranged, and a gate electrode (5) opposed to the emitter array (3b). The gate electrode (5) includes: an emitter area gate electrode (5c) opposed to the emitter array (3b); a gate address electrode (5a) connecting the emitter area gate electrode (5c) to a gate signal wire (8a); and a high-resistance area (5b) disposed between the gate address electrode (5a) and the emitter area gate electrode (5c).Type: GrantFiled: April 27, 2009Date of Patent: February 26, 2013Assignee: Panasonic CorporationInventors: Makoto Yamamoto, Keisuke Koga
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Patent number: 8294351Abstract: A matrix-type cold-cathode electron source device includes a mesh structure (8) on which through-holes (9) are formed and drive portions (7a, 7b). The through-hole (9) has an opening diameter of 1/N or less of the alignment pitch of electron source elements (4) and the drive portions (7a, 7b) drive the mesh structure (8) every 1/N of the alignment pitch of the electron source elements (4). Thus it is possible to increase a resolution without reducing the size of an electron source.Type: GrantFiled: February 19, 2009Date of Patent: October 23, 2012Assignee: Panasonic CorporationInventors: Makoto Yamamoto, Keisuke Koga
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Publication number: 20120234034Abstract: A heat generating body box housing refrigeration device includes a first refrigerant cycle in which a first condenser and a first evaporator are connected by a first refrigerant liquid pipe and a first refrigerant steam pipe and a second refrigerant cycle in which a second condenser and a second evaporator are connected by a second refrigerant liquid pipe and a second refrigerant steam pipe. The first refrigerant liquid pipe is connected between a first joint and a second joint, the first refrigerant steam pipe is connected between a third joint and a fourth joint, the second refrigerant liquid pipe is connected between a fifth joint and a sixth joint, and the second refrigerant steam pipe is connected between a seventh joint and an eighth joint.Type: ApplicationFiled: November 19, 2010Publication date: September 20, 2012Applicant: PANASONIC CORPORATIONInventors: Yuuji Nakano, Hiroshi Shibata, Keisuke Koga, Mutsuhiko Matsumoto, Keisuke Tsuji
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Publication number: 20110192580Abstract: The invention is provided with main body case (4) containing therein an air blower for circulating ambient air and a heat exchanger for exchanging heat between the ambient air circulated by the air blower and inside air, flange (13) provided in main body case (4) and having wall surface joining surface (13b) joined to wall surface (2a) where main body case (4) is arranged, and cover (12) attached to flange (13), having a louver in a side of the inside air, and a plurality of opening holes in a side of the ambient air and covering the ambient air side of main body case (4), thereby making an attachment and a detachment of cover (12) easy, and achieving a reduction of a maintenance work.Type: ApplicationFiled: October 16, 2009Publication date: August 11, 2011Applicant: PANASONIC CORPORATIONInventors: Keisuke Tsuji, Mutsuhiko Matsumoto, Nobuyuki Yasui, Hiroshi Shibata, Naoyuki Funada, Yuuji Nakano, Takahiro Sahashi, Keisuke Hagimoto, Hirotaka Soga, Keisuke Koga
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Publication number: 20110057555Abstract: A matrix-type cold-cathode electron source device includes: an emitter array (3b) in which a plurality of emitters are arranged, and a gate electrode (5) opposed to the emitter array (3b). The gate electrode (5) includes: an emitter area gate electrode (5c) opposed to the emitter array (3b); a gate address electrode (5a) connecting the emitter area gate electrode (5c) to a gate signal wire (8a); and a high-resistance area (5b) disposed between the gate address electrode (5a) and the emitter area gate electrode (5c).Type: ApplicationFiled: April 27, 2009Publication date: March 10, 2011Applicant: PANASONIC CORPORATIONInventors: Makoto Yamamoto, Keisuke Koga
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Publication number: 20110001421Abstract: A matrix-type cold-cathode electron source device includes a mesh structure (8) on which through-holes (9) are formed and drive portions (7a, 7b). The through-hole (9) has an opening diameter of 1/N or less of the alignment pitch of electron source elements (4) and the drive portions (7a, 7b) drive the mesh structure (8) every 1/N of the alignment pitch of the electron source elements (4). Thus it is possible to increase a resolution without reducing the size of an electron source.Type: ApplicationFiled: February 19, 2009Publication date: January 6, 2011Applicant: PANASONIC CORPORATIONInventors: Makoto Yamamoto, Keisuke Koga
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Patent number: 7825591Abstract: An electron beam emitted from a field-emission electron source array passes through a plurality of through holes formed in a mesh structure and reaches a target. Each of the plurality of through holes in the mesh structure has an opening on a side of the field-emission electron source array and an electron beam passageway that continues from the opening. The mesh structure is formed of a silicon-containing material doped with a N-type or P-type material. In this way, it is possible to suppress a decrease in the amount of the electron beam reaching the target while securing a mechanical strength of an electrode provided with a large number of through holes, and suppress expansion of the electron beam on the target.Type: GrantFiled: February 13, 2007Date of Patent: November 2, 2010Assignee: Panasonic CorporationInventors: Junichi Kimiya, Keisuke Koga, Makoto Yamamoto
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Patent number: 7588475Abstract: A stable field-emission electron source that does not suffer from a current drop even after a high-current density operation for a long time is provided. The field-emission electron source includes: a substrate; an insulating layer that is formed on the substrate and that has a plurality of openings; cathodes arranged at the respective openings in order to emit electron beams; a lead electrode formed on the insulating layer in order to control emission of electrons from the respective cathodes; and a surface-modifying layer formed on the surface of each of the cathodes emitting electrons, comprising a chemical bond between a cathode material composing the cathodes and a material different from the cathode material.Type: GrantFiled: March 29, 2007Date of Patent: September 15, 2009Assignee: Panasonic CorporationInventors: Keisuke Koga, Makoto Yamamoto, Akinori Shiota, Seigo Kanemaru, Masayoshi Nagao
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Patent number: 7365481Abstract: A field emission device having cold cathode devices including an emitter and a lead electrode, and the field emission device is provided with the plural kinds of cold cathode device groups classified based on the emission property of the cold cathode device. This field emission device has a member for allowing the cold cathode device group to perform emission by successively changing the cold cathode device group that mainly performs emission based on the difference in the emission property. Thus, it is possible to maintain the emission current at a predetermined necessary value or more and to realize the long lifetime of the field emission device.Type: GrantFiled: December 10, 2002Date of Patent: April 29, 2008Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Toru Kawase, Keisuke Koga
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Publication number: 20070188091Abstract: An electron beam emitted from a field-emission electron source array passes through a plurality of through holes formed in a mesh structure and reaches a target. Each of the plurality of through holes in the mesh structure has an opening on a side of the field-emission electron source array and an electron beam passageway that continues from the opening. The mesh structure is formed of a silicon-containing material doped with a N-type or P-type material. In this way, it is possible to suppress a decrease in the amount of the electron beam reaching the target while securing a mechanical strength of an electrode provided with a large number of through holes, and suppress expansion of the electron beam on the target.Type: ApplicationFiled: February 13, 2007Publication date: August 16, 2007Applicant: Matsushita Toshiba Picture Display Co., Ltd.Inventors: Junichi Kimiya, Keisuke Koga, Makoto Yamamoto
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Publication number: 20070188090Abstract: An electron beam emitted from a field-emission electron source array passes through a plurality of through holes formed in a trimming electrode and reaches a target. Each of the plurality of through holes in the trimming electrode has an opening on a side of the field-emission electron source array and an electron beam passageway that continues from the opening. The length of the electron beam passageway is larger than the diameter of the opening. Part of the electron beam that has entered the through holes is absorbed and removed by a lateral wall of the electron beam passageway. In this way, it is possible to provide a high-definition field-emission electron source apparatus in which divergence of an electron beam emitted from a field-emission electron source array is suppressed.Type: ApplicationFiled: February 13, 2007Publication date: August 16, 2007Applicant: Matsushita Toshiba Picture Display Co., Ltd.Inventors: Junichi Kimiya, Keisuke Koga, Makoto Yamamoto
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Publication number: 20070188075Abstract: A field-emission electron source apparatus includes a vacuum container that receives a field-emission electron source array, a target and an auxiliary electrode, and a getter pump that is disposed in the vacuum container and absorbs and removes excess gas. An electron beam emitted from the field-emission electron source array passes through a plurality of through holes formed in the auxiliary electrode and reaches the target. A space containing the field-emission electron source array and a space containing the target and the getter pump are separated substantially by the auxiliary electrode so that gas generated from the target is absorbed by the getter pump without passing through the space containing the field-emission electron source array. This makes it possible to provide a highly-reliable field-emission electron source apparatus in which the influence of gas and ions on the field-emission electron source array is eliminated or reduced.Type: ApplicationFiled: February 13, 2007Publication date: August 16, 2007Applicant: Matsushita Toshiba Picture Display Co., Ltd.Inventors: Junichi Kimiya, Keisuke Koga
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Publication number: 20070184747Abstract: A stable field-emission electron source that does not suffer from a current drop even after a high-current density operation for a long time is provided. The field-emission electron source includes: a substrate; an insulating layer that is formed on the substrate and that has a plurality of openings; cathodes arranged at the respective openings in order to emit electron beams; a lead electrode formed on the insulating layer in order to control emission of electrons from the respective cathodes; and a surface-modifying layer formed on the surface of each of the cathodes emitting electrons, comprising a chemical bond between a cathode material composing the cathodes and a material different from the cathode material.Type: ApplicationFiled: March 29, 2007Publication date: August 9, 2007Applicant: Matsushita Electric Industrial Co., Ltd.Inventors: Keisuke Koga, Makoto Yamamoto, Akinori Shiota, Seigo Kanemaru, Masayoshi Nagao
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Patent number: 7215072Abstract: A stable field-emission electron source that does not suffer from a current drop even after a high-current density operation for a long time is provided. The field-emission electron source includes: a substrate; an insulating layer that is formed on the substrate and that has a plurality of openings; cathodes arranged at the respective openings in order to emit electron beams; a lead electrode formed on the insulating layer in order to control emission of electrons from the respective cathodes; and a surface-modifying layer formed on the surface of each of the cathodes emitting electrons, comprising a chemical bond between a cathode material composing the cathodes and a material different from the cathode material.Type: GrantFiled: March 23, 2004Date of Patent: May 8, 2007Assignees: Matsushita Electric Industrial Co., Ltd., National Institute of Advanced Industrial Science and TechnologyInventors: Keisuke Koga, Makoto Yamamoto, Akinori Shiota, Seigo Kanemaru, Masayoshi Nagao
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Patent number: 7190334Abstract: The object of the present invention is to provide a driving method and a driving apparatus for a field emission device that controls emission current with stability regardless of how long the device is driven. The field emission device driving method and driving apparatus of the present invention set the actual emission current at a reference level by adjusting the amount of current which is supplied to the emitter to a reference level. The amount of current supplied to the emitter is adjusted to the reference level by increasing the driving voltage in response to driving time elapsing in a state in which the electron emission performance is sustained above the reference level.Type: GrantFiled: August 21, 2001Date of Patent: March 13, 2007Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Toru Kawase, Keisuke Koga
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Patent number: 7112920Abstract: A field emission electron source capable of achieving large current density is provided at low cost with good productivity. An insulating layer is formed on a substrate and has one or more openings; and an extraction electrode is formed on the insulating layer. In one or more of the openings, a plurality of emitters, each of which emits an electron by an electric field from the extraction electrode, are formed on the substrate.Type: GrantFiled: April 20, 2004Date of Patent: September 26, 2006Assignee: National instutute of advanced industrial science and technologyInventors: Makoto Yamamoto, Keisuke Koga, Akinori Shiota, Seigo Kanemaru, Masayoshi Nagao