Patents by Inventor Hajime Yamaguchi
Hajime Yamaguchi 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: 9029853Abstract: According to one embodiment, a display device includes a first insulating layer, a second insulating layer, a pixel electrode, a light emitting layer, an opposite electrode and a pixel circuit. The second insulating layer is provided on the first insulating layer. The pixel electrode is provided on the second insulating layer and light-transmissive. The light emitting layer is provided on the pixel electrode. The opposite electrode is provided on the light emitting layer. The circuit is provided between the first insulating layer and the second insulating layer, includes an interconnect supplied with a drive current, and is configured to supply the drive current to the pixel electrode. The circuit is connected to the pixel electrode. The interconnect has a first region overlaying the pixel electrode when projected onto a plane parallel to the first insulating layer. The interconnect has an opening in the first region.Type: GrantFiled: March 4, 2013Date of Patent: May 12, 2015Assignee: Kabushiki Kaisha ToshibaInventors: Nobuyoshi Saito, Tomomasa Ueda, Toshiya Yonehara, Hajime Yamaguchi, Kentaro Miura, Shintaro Nakano, Tatsunori Sakano
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Patent number: 9006828Abstract: A display device includes a first electrode, a second electrode, an organic light emitting layer, a first transistor, and a second transistor. The first transistor includes a first semiconductor layer, a first conductive unit, a second conductive unit, a first gate electrode, and a first gate insulating film. The second transistor includes a second semiconductor layer, a third conductive unit, a fourth conductive unit, a second gate electrode, and a second gate insulating film. An amount of hydrogen included in the first gate insulating film is larger than an amount of hydrogen included in the second gate insulating film.Type: GrantFiled: August 7, 2014Date of Patent: April 14, 2015Assignee: Kabushiki Kaisha ToshibaInventors: Nobuyoshi Saito, Tomomasa Ueda, Yuya Maeda, Kentaro Miura, Shintaro Nakano, Tatsunori Sakano, Hajime Yamaguchi
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Patent number: 8994020Abstract: According to one embodiment, a display device includes a thin film transistor. The thin film transistor includes a gate insulating film, a semiconductor layer, a gate electrode, first and second channel protection films, first and second conductive layers, and a passivation film. The semiconductor layer is provided on a major surface of the gate insulating film. The semiconductor layer includes first to seventh portions. The gate insulating film is disposed between the semiconductor layer and the gate electrode. The first channel protection film covers the third portion. The second channel protection film covers the fifth and fourth portions, and an upper surface of the first channel protection film. The first conductive layer covers the sixth portion. The second conductive layer covers the seventh portion. The passivation film covers the first and second portions, the first and second conductive layers, and the second channel protection film.Type: GrantFiled: March 13, 2013Date of Patent: March 31, 2015Assignee: Kabushiki Kaisha ToshibaInventors: Shintaro Nakano, Kentaro Miura, Nobuyoshi Saito, Tatsunori Sakano, Tomomasa Ueda, Hajime Yamaguchi
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Publication number: 20150084040Abstract: According to one embodiment, a semiconductor device includes a semiconductor layer including a first semiconductor portion and a second semiconductor portion being continuous with the first semiconductor portion, a first gate electrode, a second gate electrode, an insulating film. The first semiconductor portion includes a first portion, a second portion and a third portion provided between the first portion and the second portion. The second semiconductor portion includes a fourth portion separated from the first portion, a fifth portion separated from the second portion, and a sixth portion provided between the forth portion and the fifth portion. The first gate electrode is separated from the third portion. The second gate electrode is separated from the sixth portion. The insulating film is provided at a first position between the first gate electrode and the semiconductor layer and at a second position between the second gate electrode and the semiconductor layer.Type: ApplicationFiled: August 8, 2014Publication date: March 26, 2015Applicant: Kabushiki Kaisha ToshibaInventors: Shintaro NAKANO, Tomomasa UEDA, Kentaro MIURA, Nobuyoshi SAITO, Tatsunori SAKANO, Yuya MAEDA, Masaki ATSUTA, Hajime YAMAGUCHI
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Publication number: 20150087093Abstract: According to one embodiment, a method is disclosed for manufacturing a display device. The method can include forming a first resin layer on a substrate. The method can include forming a display layer on the first resin layer. The display layer includes a plurality of pixels arranged in a direction perpendicular to a stacking direction of the first resin layer and the display layer. Each of the pixels includes a first electrode provided on the first resin layer, an organic light emitting layer provided on the first electrode, and a second electrode provided on the organic light emitting layer. The method can include bonding a second resin layer onto the display layer via a bonding layer. The method can include removing the substrate. The method can include increasing a density of the bonding layer.Type: ApplicationFiled: August 13, 2014Publication date: March 26, 2015Applicant: Kabushiki Kaisha ToshibaInventors: Tatsunori SAKANO, Kentaro Miura, Tomomasa Ueda, Nobuyoshi Saito, Shintaro Nakano, Yuya Maeda, Hajime Yamaguchi
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Publication number: 20150084042Abstract: According to one embodiment, a thin film transistor includes a first insulating film, a gate electrode, a semiconductor layer, a gate insulator film, a second insulating film, a source electrode, a tunneling insulating portion, and a drain electrode. The semiconductor layer is provided between the gate electrode and the first insulating film, and includes an amorphous oxide. The gate insulator film is provided between the semiconductor layer and the gate electrode. The second insulating film is provided between the semiconductor layer and the first insulating film. The tunneling insulating portion is provided between the semiconductor layer and the source electrode, and between the semiconductor layer and the drain electrode, and between the first insulating film and the second insulating film. The tunneling insulating portion includes oxygen and at least one selected from aluminum and magnesium. A thickness of the tunneling insulating portion is 2 nanometers or less.Type: ApplicationFiled: August 22, 2014Publication date: March 26, 2015Applicant: Kabushiki Kaisha ToshibaInventors: Yuya MAEDA, Hajime YAMAGUCHI, Tomomasa UEDA, Kentaro MIURA, Shintaro NAKANO, Nobuyoshi SAITO, Tatsunori SAKANO
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Publication number: 20150084945Abstract: A liquid crystal optical device of an embodiment includes: a first substrate unit; a second substrate unit; and a liquid crystal layer interposed between the first substrate unit and the second substrate unit. The liquid crystal molecules on a side of a first alignment layer of the first substrate unit is aligned perpendicularly to a first principal surface of the first substrate unit while the liquid crystal molecules on a side of a second alignment layer of the second substrate unit are aligned horizontally along a second direction. The opposing electrode includes: a first region and a second region, the first region has N first openings, and the second region includes M second openings, N being an integer of 0 or greater, M being an integer of 1 or greater, M being greater than N.Type: ApplicationFiled: August 29, 2014Publication date: March 26, 2015Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Yuko KIZU, Machiko ITO, Hajime YAMAGUCHI, Ayako TAKAGI, Shinichi UEHARA
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Publication number: 20150084021Abstract: A semiconductor element includes a semiconductor layer, a first and a second conductive unit, a gate electrode, and a gate insulating film. The semiconductor layer includes a first portion, a second portion, and a third portion provided between the first portion and the second portion. The first conductive unit is electrically connected to the first portion. The second conductive unit is electrically connected to the second portion. The gate electrode is separated from the first conductive unit, the second conductive unit, and the third portion. The gate electrode opposes the third portion. The gate insulating film is provided between the third portion and the gate electrode. A concentration of nitrogen of the first portion is higher than a concentration of nitrogen of the third portion. A concentration of nitrogen of the second portion is higher than the concentration of nitrogen of the third portion.Type: ApplicationFiled: August 18, 2014Publication date: March 26, 2015Applicant: Kabushiki Kaisha ToshibaInventors: Shintaro NAKANO, Tomomasa UEDA, Kentaro MIURA, Nobuyoshi SAITO, Tatsunori SAKANO, Yuya MAEDA, Masaki ATSUTA, Hajime YAMAGUCHI
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Patent number: 8987712Abstract: According to one embodiment, a display device includes a light transmissive substrate, a light transmissive pixel electrode, a switching element, an organic light emitting layer, a light transmissive opposite electrode, a conductive light absorption layer and a conductive film. The light transmissive pixel electrode is provided on the substrate. The switching element is provided on the substrate and electrically connected to the pixel electrode. The organic light emitting layer is provided on the pixel electrode. The light transmissive opposite electrode is provided on the organic light emitting layer. The conductive light absorption layer is provided on the opposite electrode. The conductive film is provided on the light absorption layer.Type: GrantFiled: September 19, 2012Date of Patent: March 24, 2015Assignee: Kabushiki Kaisha ToshibaInventors: Nobuyoshi Saito, Kentaro Miura, Tomomasa Ueda, Shintaro Nakano, Tatsunori Sakano, Hajime Yamaguchi
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Publication number: 20150076471Abstract: A display device includes a first electrode, a second electrode, an organic light emitting layer, a first transistor, and a second transistor. The first transistor includes a first semiconductor layer, a first conductive unit, a second conductive unit, a first gate electrode, and a first gate insulating film. The second transistor includes a second semiconductor layer, a third conductive unit, a fourth conductive unit, a second gate electrode, and a second gate insulating film. An amount of hydrogen included in the first gate insulating film is larger than an amount of hydrogen included in the second gate insulating film.Type: ApplicationFiled: August 7, 2014Publication date: March 19, 2015Applicant: Kabushiki Kaisha ToshibaInventors: Nobuyoshi SAITO, Tomomasa Ueda, Yuya Maeda, Kentaro Miura, Shintaro Nakano, Tatsunori Sakano, Hajime Yamaguchi
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Patent number: 8939594Abstract: According to one embodiment, a display device includes a light-guiding body, a light source, a wavelength selection transmission layer, and a light control layer. The light-guiding body has a first major surface, a second major surface opposite to the first major surface, and a side face connecting the first major surface and the second major surface. The wavelength selection transmission layer is provided on the second major surface. The first major surface has a plurality of concave portions having inclined faces inclined relative to the first major surface. A ratio of a total area of the plurality of the concave portions projected on the first major surface, relative to an area of the first major surface is 8% to 25%. The plurality of the concave portions is evenly provided in the first major surface.Type: GrantFiled: June 7, 2012Date of Patent: January 27, 2015Assignee: Kabushiki Kaisha ToshibaInventors: Takashi Miyazaki, Hitoshi Nagato, Hajime Yamaguchi, Rei Hasegawa, Yutaka Nakai
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Publication number: 20150022765Abstract: According to one embodiment, a display device includes a main substrate, and a light control layer. The main substrate includes a main base having a main surface, a wavelength selective transmission layer provided on the main surface, and a circuit layer provided on the wavelength selective transmission layer. The light control layer is stacked with the main substrate and has variable optical characteristics. The wavelength selective transmission layer includes lower and upper reflecting layers, and first and second spacer layers. The upper reflecting layer is provided on the lower reflecting layer. The first spacer layer is provided between the lower and upper reflecting layers. The second spacer layer is provided between the lower and upper reflecting layers, and has a different thickness from the first spacer layer. The circuit layer includes first and second pixel electrodes, and first and second switching elements.Type: ApplicationFiled: October 2, 2014Publication date: January 22, 2015Applicant: Kabushiki Kaisha ToshibaInventors: Hitoshi NAGATO, Takashi Miyazaki, Yutaka Nakai, Hajime Yamaguchi, Koji Suzuki, Rei Hasegawa
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Patent number: 8933444Abstract: According to one embodiment, a display device includes a substrate, a thin film transistor, a passivation film, a hydrogen barrier film, a pixel electrode, an organic light emitting layer, an opposite electrode, and a sealing film. The thin film transistor is provided on a major surface of the substrate. The thin film transistor includes a gate electrode, a gate insulating film, a semiconductor film, a first conducting portion, and a second conducting portion. The passivation film is provided on the thin film transistor. The hydrogen barrier film is provided on the passivation film. The pixel electrode is electrically connected to one of the first conducting portion and the second conducting portion. The organic light emitting layer is provided on the pixel electrode. The opposite electrode is provided on the organic light emitting layer. The sealing film is provided on the hydrogen barrier film and the opposite electrode.Type: GrantFiled: December 21, 2012Date of Patent: January 13, 2015Assignee: Kabushiki Kaisha ToshibaInventors: Nobuyoshi Saito, Kentaro Miura, Shintaro Nakano, Tatsunori Sakano, Tomomasa Ueda, Hajime Yamaguchi
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Patent number: 8933909Abstract: According to one embodiment, a touch panel includes first interconnections, second interconnections, sensor units and a control unit. The first interconnections are arranged along a first direction, and extend along a second direction intersecting with the first direction. The second interconnections are arranged along a third direction intersecting with the first direction, and extend along a fourth direction intersecting with the third direction. The sensor units are provided in intersection portions of the first and second interconnections, include first and second ferromagnetic layers, and an intermediate layer, allow a current to be passed, and have one end connected to the first interconnections and another end connected to the second interconnections. The control unit is connected to the first and second interconnections. An electric resistance of the sensor units changes in accordance with a stress applied. The control unit senses a change in the electric resistance.Type: GrantFiled: May 24, 2012Date of Patent: January 13, 2015Assignee: Kabushiki Kaisha ToshibaInventors: Devin Giddings, Nobuyoshi Saito, Hideaki Fukuzawa, Yoshihiko Fuji, Michiko Hara, Hajime Yamaguchi
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Patent number: 8916858Abstract: According to one embodiment, a display device includes a substrate, a thin film transistor, a pixel electrode, an organic light emitting layer, a common electrode, and a sealing unit. The thin film transistor is provided on the substrate. The thin film transistor includes a gate electrode, a gate insulating film, a semiconductor film, a first conducting portion, and a second conducting portion. The pixel electrode is electrically connected to one of the first conducting portion and the second conducting portion. The organic light emitting layer is provided on the pixel electrode. The common electrode is provided on the organic light emitting layer. The sealing unit is provided on the common electrode. The sealing unit includes a first sealing film and a second sealing film. A refractive index of the second sealing film is different from a refractive index of the first sealing film.Type: GrantFiled: December 28, 2012Date of Patent: December 23, 2014Assignee: Kabushiki Kaisha ToshibaInventors: Shintaro Nakano, Tomomasa Ueda, Kentaro Miura, Nobuyoshi Saito, Tatsunori Sakano, Hajime Yamaguchi
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Patent number: 8899769Abstract: According to one embodiment, a display device includes a light-guiding body, a light source, a wavelength selection transmission layer, and a light control layer. The light-guiding body has a first major surface, a second major surface opposite to the first major surface, and a side face connecting the first major surface and the second major surface. The wavelength selection transmission layer is provided on the second major surface. The first major surface has a plurality of concave portions having inclined faces inclined relative to the first major surface. A ratio of a total area of the plurality of the concave portions projected on the first major surface, relative to an area of the first major surface is 8% to 25%. The plurality of the concave portions is evenly provided in the first major surface.Type: GrantFiled: June 7, 2012Date of Patent: December 2, 2014Assignee: Kabushiki Kaisha ToshibaInventors: Takashi Miyazaki, Hitoshi Nagato, Hajime Yamaguchi, Rei Hasegawa, Yutaka Nakai
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Patent number: 8872738Abstract: According to one embodiment, a display device includes an insulating layer, a display unit, and an organic EL layer. The display unit is provided on a major surface of the insulating layer and includes a plurality of gate lines, a plurality of signal lines, a plurality of power source lines and a plurality of pixel units arranged in a matrix configuration. The EL layer is provided on the display unit. Each pixel unit includes a drive transistor and a resistor. The drive transistor includes a drive gate electrode, a drive source electrode, and a drive drain electrode. The drive source electrode or the drive drain electrode is connected to one of the power source lines. An end of the resistor is connected to the drive gate electrode. An other end of the resistor is connected to one of the gate line, the signal line, and the power source line.Type: GrantFiled: September 21, 2011Date of Patent: October 28, 2014Assignee: Kabushiki Kaisha ToshibaInventors: Nobuyoshi Saito, Tomomasa Ueda, Hajime Yamaguchi, Kentaro Miura, Shintaro Nakano, Tatsunori Sakano
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Patent number: 8854585Abstract: According to one embodiment, a liquid crystal display includes a liquid crystal layer exhibiting Kerr effect, a first electrode including combtooth portions, a second electrode, and protruding portions facing a main surface of the liquid crystal layer with at least one of the first and second electrodes interposed therebetween. The combtooth portions each extends in a first direction and are arranged in a second direction. The second electrode includes a portion that faces the main surface and is positioned in a gap between the combtooth portions or faces the main surface with the gap interposed therebetween. The protruding portions each extends in the first direction and are arranged in the second direction. Each of the first protruding portions forms a convex surface having a ridge shape on a surface of the combtooth portion or a surface of the portion of the second electrode positioned at the gap.Type: GrantFiled: September 23, 2011Date of Patent: October 7, 2014Assignee: Kabushiki Kaisha ToshibaInventors: Yuko Kizu, Rei Hasegawa, Hajime Yamaguchi
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Publication number: 20140285914Abstract: According to one embodiment, a method for manufacturing a display device is disclosed. The method can include bonding a display body to a filter body, irradiating light and separating. The display body includes a first support unit and a display unit. The first support unit includes a first substrate, a first metal layer, and a first resin layer. The display unit has a first region and a second region. The filter body includes a second support unit and a filter unit. The second support unit includes a second substrate, a second metal layer and a second resin layer. In the bonding, the display unit and the filter unit are disposed between the first and second substrates. The light is irradiated onto the first and second metal layers. The first substrate is separated from the first resin layer and the second substrate is separated from the second resin layer.Type: ApplicationFiled: February 3, 2014Publication date: September 25, 2014Applicant: Kabushiki Kaisha ToshibaInventors: Tatsunori SAKANO, Kentaro Miura, Tomomasa Ueda, Nobuyoshi Saito, Shintaro Nakano, Yuya Maeda, Hajime Yamaguchi
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Publication number: 20140284594Abstract: According to one embodiment, a display device includes a substrate unit, a thin film transistor, a pixel electrode and a display layer. The substrate unit includes a substrate, a first insulating layer provided on the substrate, and a second insulating layer provided on the first insulating layer. The thin film transistor is provided on the substrate unit and includes a gate electrode provided on the second insulating layer, a semiconductor layer of an oxide separated from the gate electrode, a gate insulation layer provided between the gate electrode and the semiconductor layer, a first conductive portion, a second conductive portion, and a third insulating layer. The pixel electrode is connected to one selected from the first and second conductive portions. The display layer is configured to have a light emission or a change of optical characteristic occurring according to a charge supplied to the pixel electrode.Type: ApplicationFiled: February 7, 2014Publication date: September 25, 2014Applicant: Kabushiki Kaisha ToshibaInventors: Shintaro NAKANO, Tomomasa Ueda, Kentaro Miura, Nobuyoshi Saito, Tatsunori Sakano, Yuya Maeda, Hajime Yamaguchi