Patents by Inventor Akinori Shiota
Akinori Shiota 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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Patent number: 9576513Abstract: The present disclosure relates to a method for manufacturing an EL display apparatus including a light-emitting portion in which a light emitting layer is disposed between a pair of electrodes, a thin film transistor array device for controlling light emission of the light-emitting portion, and an EL display panel in which a plurality of pixels of colors of R, G, and B are disposed. After production of the EL display panel, an inspection step is performed to apply, to each of the pixels, a voltage which is preset for each of the colors of R, G, and B of the pixels, the voltage applied in the inspection step is a potential difference that is a reverse bias voltage opposite to an anode voltage and a cathode voltage during lighting, and the potential difference allows a faulty pixel to turn to a dead dot.Type: GrantFiled: May 21, 2014Date of Patent: February 21, 2017Assignee: JOLED INCInventor: Akinori Shiota
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Patent number: 9121914Abstract: A defect detection method for an organic EL element having a first electrode, a second electrode, and a functional layer and a light-emission layer disposed between the electrodes, including: applying a first voltage, between the electrodes, that, when the organic EL element includes, between the electrodes, a defective portion that is a potential cause of non-light emission of the light-emission layer, reduces electrical resistance of a first portion, of the functional layer, corresponding to the defective portion and makes the organic EL element detectable as a dark spot, whose light-emission layer does not emit light; and after applying the first voltage, applying a second voltage between the electrodes and detecting whether or not the organic EL element is the dark spot, the second voltage, when the organic EL element does not include the defective portion, causing the light-emission layer to emit light.Type: GrantFiled: February 22, 2013Date of Patent: September 1, 2015Assignee: JOLED INC.Inventors: Takayuki Shimamura, Yoshiki Hayashida, Akinori Shiota, Shinya Tsuchida
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Publication number: 20140253133Abstract: The present disclosure relates to a method for manufacturing an EL display apparatus including a light-emitting portion in which a light emitting layer is disposed between a pair of electrodes, a thin film transistor array device for controlling light emission of the light-emitting portion, and an EL display panel in which a plurality of pixels of colors of R, G, and B are disposed. After production of the EL display panel, an inspection step is performed to apply, to each of the pixels, a voltage which is preset for each of the colors of R, G, and B of the pixels, the voltage applied in the inspection step is a potential difference that is a reverse bias voltage opposite to an anode voltage and a cathode voltage during lighting, and the potential difference allows a faulty pixel to turn to a dead dot.Type: ApplicationFiled: May 21, 2014Publication date: September 11, 2014Applicant: PANASONIC CORPORATIONInventor: Akinori SHIOTA
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Publication number: 20140154818Abstract: A defect detection method for an organic EL element having a first electrode, a second electrode, and a functional layer and a light-emission layer disposed between the electrodes, including: applying a first voltage, between the electrodes, that, when the organic EL element includes, between the electrodes, a defective portion that is a potential cause of non-light emission of the light-emission layer, reduces electrical resistance of a first portion, of the functional layer, corresponding to the defective portion and makes the organic EL element detectable as a dark spot, whose light-emission layer does not emit light; and after applying the first voltage, applying a second voltage between the electrodes and detecting whether or not the organic EL element is the dark spot, the second voltage, when the organic EL element does not include the defective portion, causing the light-emission layer to emit light.Type: ApplicationFiled: February 22, 2013Publication date: June 5, 2014Inventors: Takayuki Shimamura, Yoshiki Hayashida, Akinori Shiota, Shinya Tsuchida
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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: 7583347Abstract: A liquid crystal display including: a liquid crystal panel including an array substrate having an upper surface on which a common electrode and a pixel electrode are formed, an opposing substrate disposed so as to be opposite to the upper surface and a liquid crystal layer disposed between the array substrate and the opposing substrate, and a reflecting face. The liquid crystal display is further characterized in that at least one electrode of the common electrode and the pixel electrode is constituted by an electrode portion and a wiring portion, the electrode portion is at least partially constituted by a transparent electric conductor, the electrode portion is formed in a layer separated by an insulating layer from a layer in which the scanning signal line is formed, and the wiring portion is formed in the layer in which the scanning signal line is formed.Type: GrantFiled: November 1, 2006Date of Patent: September 1, 2009Assignee: Panasonic CorporationInventors: Akinori Shiota, Hiroyuki Yamakita, Shinji Ogawa
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Patent number: 7414682Abstract: An object of the present invention is to provide a liquid crystal display having a high luminance and a high contrast and a fabrication method thereof. To achieve the above object, a liquid crystal display of the present invention includes a liquid crystal panel for displaying an image by changing transmittance of a display light and one or more structures (151), (152) for dividing a pixel (103) of the liquid crystal panel into a plurality of domains (391), in which at least part of the structure (151) is constituted by a light-transmitting portion (151B) and a light-non-transmitting portion (151A).Type: GrantFiled: July 31, 2001Date of Patent: August 19, 2008Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Akinori Shiota, Hiroyuki Yamakita, Shinji Ogawa
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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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Publication number: 20070040979Abstract: An object of the present invention is to provide a liquid crystal display having a high luminance and a high contrast and a fabrication method thereof. To achieve the above object, a liquid crystal display of the present invention includes a liquid crystal panel for displaying an image by changing transmittance of a display light and one or more structures (151), (152) for dividing a pixel (103) of the liquid crystal panel into a plurality of domains (391), in which at least part of the structure (151) is constituted by a light-transmitting portion (151B) and a light-non-transmitting portion (151A).Type: ApplicationFiled: November 1, 2006Publication date: February 22, 2007Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.Inventors: Akinori Shiota, Hiroyuki Yamakita, Shinji Ogawa
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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
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Publication number: 20060066216Abstract: There is provided a field emission display that can achieve high brightness without increasing the anode voltage, and can realize high resolution by suppressing the occurrence of inter-pixel crosstalk resulting from light excited from the phosphor layers. A field emission display is constructed by a field emission electron source disposed in a vacuum container and a phosphor screen that is disposed in the vacuum container so as to be opposite to the field emission electron source and that has a plurality of recessed portions on its surface opposing to the field emission electron source, with phosphor layers being formed in the recessed portions An image is displayed by causing the phosphor layers to emit light by collision of electrons emitted from the field emission electron source.Type: ApplicationFiled: September 23, 2005Publication date: March 30, 2006Applicant: Matsushita Toshiba Picture Display Co., Ltd.Inventors: Keisuke Koga, Akinori Shiota, Makoto Yamamoto
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Publication number: 20060066198Abstract: An electron source apparatus includes a plurality of electron emission portions arranged in a matrix on a Si substrate, and a plurality of emitter lines and a plurality of gate lines that are orthogonal to each other, and each of the plurality of electron emission portions being controlled by signals from the plurality of emitter lines and the plurality of gate lines to perform an independent electron emission operation.Type: ApplicationFiled: September 19, 2005Publication date: March 30, 2006Applicant: Matsushita Toshiba Picture Display Co., Ltd.Inventors: Makoto Yamamoto, Keisuke Koga, Akinori Shiota
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Patent number: 6933916Abstract: A liquid crystal display of the present invention is adapted to perform initialization by inputting voltages with different polarities to two pixel electrodes (23á, 23â) adjacent in front and back direction. It is preferable that in the two pixel electrodes (23á, 23â) adjacent in front and back direction, the pixel electrode (23á) located on back side is provided with a first protrusion (232á) at a front side and back direction, the pixel electrode (231â) adjacent in front and back is provided with a second protrusion (23â) located on front side is provided with a second a second protrusion (234â) on a back side edge (233â)thereof.Type: GrantFiled: December 18, 2001Date of Patent: August 23, 2005Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Kenji Nakao, Daiichi Suzuki, Yoshinori Kobayashi, Katsuyuki Arimoto, Katsuhiko Kumagawa, Ichiro Sato, Keisuke Tsuda, Hirofumi Wakemoto, Hiroyuki Yamakita, Masanori Kimura, Yoshinori Tanaka, Akinori Shiota
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Publication number: 20050001536Abstract: 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: ApplicationFiled: April 20, 2004Publication date: January 6, 2005Applicants: Matsushita Electric Industrial Co., Ltd., National Institute of Advanced Industrial Science and TechnologyInventors: Makoto Yamamoto, Keisuke Koga, Akinori Shiota, Seigo Kanemaru, Masayoshi Nagao
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Publication number: 20040189176Abstract: 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 23, 2004Publication date: September 30, 2004Applicants: 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: 6781659Abstract: A liquid crystal display device, wherein liquid crystal is driven by an electric field that is parallel to a substrate, includes a plurality of gate lines (Xm−1), (Xm) and a plurality of data lines (Yn−1), (Yn) provided such that the data lines intersect with the plurality of gate lines, switching elements (13) connected to the gates lines (Xm−1) and the data lines (Yn−1), pixel electrodes (11) connected to the data lines (Yn−1) via the switching elements (13), and opposing electrodes (12) forming pairs with the pixel electrodes (11), wherein a plurality of storage capacities (14a), (14b) for maintaining a charge of the pixel electrodes (11) are provided in a distributed arrangement associated with points where the plurality of gate lines (Xm−1), (Xm) and the plurality of data lines (Yn−1), (Yn) intersect.Type: GrantFiled: October 12, 2001Date of Patent: August 24, 2004Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Akinori Shiota, Hiroyuki Yamakita, Katsuhiko Kumagawa, Sadayoshi Hotta, Yoneharu Takubo
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Patent number: 6762816Abstract: A liquid crystal display comprises an array substrate in which a common electrode, a pixel electrode, a scanning signal line, a video signal line and a semiconductor switching element are provided, an opposed substrate, and a liquid crystal layer interposed between the array substrate and opposed substrate. The line width of at least either the common electrode or the pixel electrode is larger than the distance between the common electrode and the pixel electrode. The film thickness of at least one of the common electrode and the pixel electrode is larger than the thickness of at least either the scanning signal line or the video signal line. As a result, an inplane electric field liquid crystal display having a wide viewing angle, high-speed response, and high image quality such as high luminance is provided.Type: GrantFiled: December 11, 2001Date of Patent: July 13, 2004Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Hiroyuki Yamakita, Katsuhiko Kumagawa, Kazuo Inoue, Akinori Shiota, Ichiro Sato, Hiroshi Satani, Masanori Kimura, Satoshi Asada
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Patent number: 6697141Abstract: A liquid crystal display comprises an array substrate in which a common electrode, a pixel electrode, a scanning signal line, a video signal line and a semiconductor switching element are provided, an opposed substrate, and a liquid crystal layer interposed between the array substrate and opposed substrate. The line width of at least either the common electrode or the pixel electrode is larger than the distance between the common electrode and the pixel electrode. The film thickness of at least one of the common electrode and the pixel electrode is larger than the thickness of at least either the scanning signal line or the video signal line. As a result, an in-plane electric field liquid crystal display having a wide viewing angle, high-speed response, and high image quality such as high luminance is provided.Type: GrantFiled: June 4, 2002Date of Patent: February 24, 2004Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Hiroyuki Yamakita, Katsuhiko Kumagawa, Kazuo Inoue, Akinori Shiota, Ichiro Sato, Hiroshi Satani, Masanori Kimura, Satoshi Asada
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Publication number: 20040027524Abstract: An object of the present invention is to provide a liquid crystal display having a high luminance and a high contrast and a fabrication method thereof. To achieve the above object, a liquid crystal display of the present invention includes a liquid crystal panel for displaying an image by changing transmittance of a display light and one or more structures (151), (152) for dividing a pixel (103) of the liquid crystal panel into a plurality of domains (391), in which at least part of the structure (151) is constituted by a light-transmitting portion (151B) and a light-non-transmitting portion (151A).Type: ApplicationFiled: June 17, 2003Publication date: February 12, 2004Inventors: Akinori Shiota, Hiroyuki Yamakita, Shinji Ogawa