Patents by Inventor Hiroshi Sagawa
Hiroshi Sagawa 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: 8502756Abstract: An image display unit comprises a display area including pixels, and an imaging unit disposed at its rear side behind the display area. Light transmissive sections are located within the display area and correspond to the pixels. The light transmissive sections are configured to separately receive light incident upon the image display unit, and pass the received light to the imaging unit.Type: GrantFiled: October 13, 2010Date of Patent: August 6, 2013Assignee: Sony CorporationInventors: Kazuo Nakamura, Katsuhide Uchino, Jiro Yamada, Ken Tamayama, Hiroshi Sagawa
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Patent number: 8497504Abstract: A thin film transistor with which oxygen is easily supplied to an oxide semiconductor layer and favorable transistor characteristics are able to be restored and a display unit including the same. The thin film transistor includes, sequentially over a substrate, a gate electrode, a gate insulting film, an oxide semiconductor layer including a channel region, and a channel protective layer covering the channel region A source electrode and a drain electrode are formed on the oxide semiconductor layer located on both sides of the channel protective layer, and at least one of the source electrode and the drain electrode has an aperture to expose the oxide semiconductor layer.Type: GrantFiled: November 2, 2011Date of Patent: July 30, 2013Assignee: Sony CorporationInventors: Toshiaki Arai, Narihiro Morosawa, Kazuhiko Tokunaga, Hiroshi Sagawa, Kiwamu Miura
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Patent number: 8399892Abstract: A display device includes, on a substrate, light emitting elements each formed by sequentially stacking a first electrode layer, an organic layer including a light emission layer, and a second electrode layer and arranged in first and second directions which cross each other, a drive circuit including drive elements that drive light emitting elements, and a wiring extending in the first direction, and an insulating layer disposed in a gap region sandwiched by the light emitting elements neighboring in the second direction and having a recess or a projection. The wiring is disposed in an overlap region overlapping with the recess or the projection in the insulating layer in a thickness direction, in the gap region, and the second electrode layers in the light emitting elements neighboring in the second direction are separated from each other by the recess or the projection in the insulating layer.Type: GrantFiled: June 14, 2011Date of Patent: March 19, 2013Assignee: Sony CorporationInventor: Hiroshi Sagawa
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Publication number: 20130056714Abstract: An organic EL display includes: a plurality of first electrodes provided in a display region on a drive substrate, the plurality of first electrodes each including a laminated film having two or more layers; an organic layer provided on the plurality of first electrodes and including a light emitting layer; an electrode pad provided in a peripheral region around the display region; and a second electrode provided on the organic layer as well as the electrode pad, wherein the laminated film includes a first conductive film functioning as a reflective film, and a second conductive film provided below the first conductive film, and having a reflectance lower than that of the first conductive film, and the electrode pad corresponds to a part of the laminated film, and includes a conductive film made of a material same as that of the second conductive film.Type: ApplicationFiled: August 24, 2012Publication date: March 7, 2013Applicant: SONY CORPORATIONInventors: Eiji Hasegawa, Atsuya Makita, Jiro Yamada, Seiichi Yokoyama, Hidetoshi Noda, Hiroshi Sagawa
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Patent number: 8389315Abstract: A method for manufacturing a display device is provided. The method includes forming a circuit part; forming a planarization insulating layer on the circuit part; forming a separator in an area outside a display area in which a plurality of light emitting elements are formed by removing the planarization insulating layer at a position surrounding the display area; forming an electrically-conductive layer including a plurality of first electrodes and an auxiliary interconnect on the planarization insulating layer; forming an aperture-defining insulating layer that insulates the first electrodes from each other and has an aperture through which part of the first electrode is exposed; and forming a plurality of light emitting elements by stacking the first electrode, an organic layer, and a second electrode common to the plurality of light emitting elements.Type: GrantFiled: June 7, 2012Date of Patent: March 5, 2013Assignee: Sony CorporationInventors: Akiko Tsuji, Toshiki Matsumoto, Hirofumi Fujioka, Mitsuru Asano, Hiroshi Sagawa, Kiwamu Miura
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Patent number: 8368825Abstract: A display device includes an anode electrode provided for each pixel, an opening insulation film which covers the periphery of the anode electrode and which defines an pixel opening, and a storage capacitor disposed below the anode electrode through a planarizing insulation film, having a function to store charge for driving a pixel, and including capacitor electrodes wider than the pixel opening.Type: GrantFiled: May 19, 2009Date of Patent: February 5, 2013Assignee: Sony CorporationInventors: Hiroshi Sagawa, Yuuki Seo, Katsuhide Uchino
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Publication number: 20120320029Abstract: An image display device and method of driving an image display device with alternative repeating of an emission period during which the light emitting element is made to emit light and a non-emission period during which light emission of the light emitting element is stopped. The terminal voltage of a storage capacitor is set to the voltage of a signal line, whereby light emission luminance of the light emitting element in a next emission period is set.Type: ApplicationFiled: August 29, 2012Publication date: December 20, 2012Applicant: Sony CorporationInventors: Tomoaki Handa, Yuuki Seo, Hiroshi Sagawa, Katsuhide Uchino
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Publication number: 20120244775Abstract: A method for manufacturing a display device is provided. The method includes forming a circuit part; forming a planarization insulating layer on the circuit part; forming a separator in an area outside a display area in which a plurality of light emitting elements are formed by removing the planarization insulating layer at a position surrounding the display area; forming an electrically-conductive layer including a plurality of first electrodes and an auxiliary interconnect on the planarization insulating layer; forming an aperture-defining insulating layer that insulates the first electrodes from each other and has an aperture through which part of the first electrode is exposed; and forming a plurality of light emitting elements by stacking the first electrode, an organic layer, and a second electrode common to the plurality of light emitting elements.Type: ApplicationFiled: June 7, 2012Publication date: September 27, 2012Applicant: SONY CORPORATIONInventors: Akiko Tsuji, Toshiki Matsumoto, Hirofumi Fujioka, Mitsuru Asano, Hiroshi Sagawa, Kiwamu Miura
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Patent number: 8269697Abstract: The present invention disposes a switch transistor between a driving transistor and a light emitting element, and sets the switch transistor in an off state during a non-emission period. Thereby, a variation in threshold voltage of the driving transistor is corrected while destruction of the light emitting element due to a reverse bias is avoided.Type: GrantFiled: April 30, 2009Date of Patent: September 18, 2012Assignee: Sony CorporationInventors: Tomoaki Handa, Yuuki Seo, Hiroshi Sagawa, Katsuhide Uchino
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Patent number: 8269217Abstract: A thin film transistor with which oxygen is easily supplied to an oxide semiconductor layer and favorable transistor characteristics are able to be restored and a display unit including the same are provided. The thin film transistor includes sequentially over a substrate a gate electrode, a gate insulting film, an oxide semiconductor layer including a channel region, and a channel protective layer covering the channel region A source electrode and a drain electrode are formed on the oxide semiconductor layer located on both sides of the channel protective layer, and at least one of the source electrode and the drain electrode has an aperture to expose the oxide semiconductor layer.Type: GrantFiled: January 29, 2010Date of Patent: September 18, 2012Assignee: Sony CorporationInventors: Toshiaki Arai, Narihiro Morosawa, Kazuhiko Tokunaga, Hiroshi Sagawa, Kiwamu Miura
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Patent number: 8212258Abstract: Disclosed herein is a display device, including: a substrate; a circuit part configured to include a drive element formed over the substrate; a planarization insulating layer configured to be formed on the circuit part; an electrically-conductive layer configured to be formed on the planarization insulating layer and include a plurality of first electrodes and an auxiliary interconnect; an aperture-defining insulating layer configured to insulate the plurality of first electrodes from each other and have an aperture through which part of the first electrode is exposed; a plurality of light emitting elements configured to be formed by stacking the first electrode, an organic layer including a light emitting layer, and a second electrode in that order; and a separator configured to be formed by removing the planarization insulating layer at a position surrounding a display area in which the plurality of light emitting elements connected to the drive element are disposed.Type: GrantFiled: October 7, 2010Date of Patent: July 3, 2012Assignee: Sony CorporationInventors: Akiko Tsuji, Toshiki Matsumoto, Hirofumi Fujioka, Mitsuru Asano, Hiroshi Sagawa, Kiwamu Miura
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Patent number: 8184075Abstract: An active matrix display device includes a driving section provided on a substrate, an insulating film stacked on the substrate, and light-emitting elements arranged in a matrix on the insulating film, and each of the light-emitting elements includes an light-emitting layer between its upper and lower electrodes, the active matrix display device being driven by the driving section provided for each of the light-emitting elements, the active matrix display device also including a first wiring required to cause the light-emitting element to emit light, and a second wiring disposed in the underlying layer of the first wiring via the insulating film, the second wiring also required to cause the light-emitting element to emit light, wherein the first or second wiring is branched into a plurality of wirings at the intersection between the two wirings.Type: GrantFiled: October 30, 2008Date of Patent: May 22, 2012Assignee: Sony CorporationInventors: Hiroshi Sagawa, Takayuki Taneda, Tetsuro Yamamoto, Junichi Yamashita, Katsuhide Uchino, Yukihito Iida, Mitsuru Asano
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Publication number: 20120043565Abstract: A display device includes: a substrate; a plurality of light-emission elements arranged, on the substrate, in a first direction and a second direction intersecting each other, each of the light-emission elements having a first electrode layer, an organic layer including a luminous layer, and a second electrode layer which are laminated in that order; and a separation section disposed, on the substrate, between the light-emission elements adjacent to each other in the first direction, the separation section having two or more pairs of steps. The first electrode layers in the light-emission elements are separated from each other, and the organic layers as well as the second electrode layers in the light-emission elements adjacent to each other in the first direction are separated from each other by the steps included in the separation section.Type: ApplicationFiled: August 10, 2011Publication date: February 23, 2012Applicant: Sony CorporationInventor: Hiroshi Sagawa
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Publication number: 20120043548Abstract: A thin film transistor with which oxygen is easily supplied to an oxide semiconductor layer and favorable transistor characteristics are able to be restored and a display unit including the same. The thin film transistor includes, sequentially over a substrate, a gate electrode, a gate insulting film, an oxide semiconductor layer including a channel region, and a channel protective layer covering the channel region A source electrode and a drain electrode are formed on the oxide semiconductor layer located on both sides of the channel protective layer, and at least one of the source electrode and the drain electrode has an aperture to expose the oxide semiconductor layer.Type: ApplicationFiled: November 2, 2011Publication date: February 23, 2012Applicant: SONY CORPORATIONInventors: Toshiaki Arai, Narihiro Morosawa, Kazuhiko Tokunaga, Hiroshi Sagawa, Kiwamu Miura
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Publication number: 20120001183Abstract: A method of producing a display device includes the steps of forming gate electrodes on a substrate so that an arrangement of a source and a drain, in a pixel row direction, of a thin-film transistor formed in each of pixels on the substrate is reversed every pixel row; forming a gate insulating film and an amorphous semiconductor thin film on the substrate in that order so as to cover the gate electrodes; crystallizing the semiconductor thin film by irradiating the semiconductor thin film with an energy beam so that a scanning direction of the energy beam is the same with respect to the arrangement of the source and the drain in the pixel row direction; and forming a light-emitting element connected to the thin-film transistor.Type: ApplicationFiled: September 15, 2011Publication date: January 5, 2012Applicant: Sony CorporationInventors: Hiroshi Sagawa, Naobumi Toyomura
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Publication number: 20110316007Abstract: A display device includes, on a substrate, light emitting elements each formed by sequentially stacking a first electrode layer, an organic layer including a light emission layer, and a second electrode layer and arranged in first and second directions which cross each other, a drive circuit including drive elements that drive light emitting elements, and a wiring extending in the first direction, and an insulating layer disposed in a gap region sandwiched by the light emitting elements neighboring in the second direction and having a recess or a projection. The wiring is disposed in an overlap region overlapping with the recess or the projection in the insulating layer in a thickness direction, in the gap region, and the second electrode layers in the light emitting elements neighboring in the second direction are separated from each other by the recess or the projection in the insulating layer.Type: ApplicationFiled: June 14, 2011Publication date: December 29, 2011Applicant: SONY CORPORATIONInventor: Hiroshi Sagawa
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Publication number: 20110310069Abstract: In one example embodiment, a display device for suppressing reflected light includes a driving circuit and a display region which includes a plurality of pixels. In one example embodiment, the plurality of pixels includes a first pixel having a first light emitting element which includes a first light emitting portion having a first layer surface. In one example embodiment, first pixel includes a second light emitting element which includes a second light emitting portion having a second, different layer surface. In one example embodiment, the first pixel includes a third light emitting element which includes a third light emitting portion having a third, different layer surface.Type: ApplicationFiled: June 7, 2011Publication date: December 22, 2011Applicant: Sony CorporationInventor: Hiroshi SAGAWA
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Patent number: 8034672Abstract: A method of producing a display device includes the steps of forming gate electrodes on a substrate so that an arrangement of a source and a drain, in a pixel row direction, of a thin-film transistor formed in each of pixels on the substrate is reversed every pixel row; forming a gate insulating film and an amorphous semiconductor thin film on the substrate in that order so as to cover the gate electrodes; crystallizing the semiconductor thin film by irradiating the semiconductor thin film with an energy beam so that a scanning direction of the energy beam is the same with respect to the arrangement of the source and the drain in the pixel row direction; and forming a light-emitting element connected to the thin-film transistor.Type: GrantFiled: February 19, 2009Date of Patent: October 11, 2011Assignee: Sony CorporationInventors: Hiroshi Sagawa, Naobumi Toyomura
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Patent number: 8013513Abstract: An active matrix display device includes a driving section provided on a substrate, an insulating film stacked on the driving section, and light-emitting elements arranged in a matrix on the insulating film, each of the light-emitting elements having a light-emitting layer between upper and lower electrodes, the active matrix display device being driven by the driving section provided for each of the light-emitting elements, the active matrix display device also includes an auxiliary wiring provided on the same layer as the lower electrode of the light-emitting element and adapted to adjust the electrical resistance of the upper electrode, and drive wirings disposed in the underlying layer of the auxiliary wiring via the insulating film and adapted to drive the light-emitting element, wherein the auxiliary or drive wiring is routed in a roundabout manner where the auxiliary and drive wirings overlap.Type: GrantFiled: November 14, 2008Date of Patent: September 6, 2011Assignee: Sony CorporationInventors: Hiroshi Sagawa, Tetsuro Yamamoto, Katsuhide Uchino
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Patent number: 7944141Abstract: An organic electric field light-emitting display device includes: a plurality of pixel circuits, each disposed at one of the intersections between a plurality of signal lines and a plurality of scan lines, each of the pixel circuits including an organic electric field light-emitting element; a power auxiliary circumferential line electrically connected to one of two electrodes adapted to apply an electric field to the organic electric field light-emitting element, the power auxiliary circumferential line being disposed in a ring-like arrangement around the pixel arrangement region; and a plurality of dummy wirings formed on the underlying layer of the power auxiliary circumferential line between the intersections between either one of the plurality of signal lines and the plurality of scan lines and the power auxiliary circumferential line, the plurality of dummy wirings being insulated and isolated from the signal or scan line in proximity.Type: GrantFiled: October 24, 2008Date of Patent: May 17, 2011Assignee: Sony CorporationInventors: Hiroshi Sagawa, Katsuhide Uchino