Patents by Inventor Akio Murayama
Akio Murayama 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: 20240147615Abstract: According to one embodiment, an electronic device includes an elastic insulating base including a plurality of island-shaped portions and a plurality of strip-like portions each connecting respective adjacent pair of the plurality of island-shaped portions, electrical element located on each of the plurality of island-shaped portions and a plurality of wiring lines located in the plurality of strip-like portions respectively and each electrically connected to the electrical element. Each of the plurality of strip-like portions including a curved portion, and a ratio (R/W) of a radius (R) of curvature in the curved portions to the width W in the curved portion is in a range of 10?R/W?20.Type: ApplicationFiled: October 10, 2023Publication date: May 2, 2024Applicant: Japan Display Inc.Inventors: Takumi SANO, Akio MURAYAMA, Shinichiro OKA, Masatomo HISHINUMA
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Publication number: 20240121893Abstract: According to an aspect, a stretchable device includes: a resin base member; and a signal line and a strain gauge stacked on the resin base member. The resin base member includes: a plurality of bodies disposed separately from each other; and a plurality of hinges that couple the bodies while meandering. The hinges each include: a plurality of bends that bend and are disposed between the bodies; and a base that linearly extends to couple one of the bodies to a corresponding one of the bends. The signal line includes: a bend signal line stacked on the bends; and a base signal line stacked on the base. The base signal line has an occupied area per unit length in a length direction of the signal line larger than the bend signal line when viewed in a stacking direction in which the signal line is stacked on the resin base member.Type: ApplicationFiled: October 4, 2023Publication date: April 11, 2024Applicant: Japan Display Inc.Inventors: Takumi SANO, Masatomo HISHINUMA, Yasushi TOMIOKA, Akio MURAYAMA, Shinichiro OKA
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Patent number: 10675851Abstract: According to one embodiment, a method of manufacturing a display device, includes preparing a first substrate in which a first display element part, a first extension part, a second display element part, and a second extension part, are formed, preparing a second substrate in which a first peeling auxiliary layer, a second peeling auxiliary layer, a sacrifice layer, a first color filter layer, and a second color filter layer, are formed, attaching the first substrate and the second substrate, and radiating a laser beam on the second substrate, and peeling a second support substrate from the first peeling auxiliary layer and the second peeling auxiliary layer while blocking the laser beam by the sacrifice layer.Type: GrantFiled: March 1, 2017Date of Patent: June 9, 2020Assignee: Japan Display Inc.Inventors: Yasushi Kawata, Akio Murayama
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Publication number: 20190051858Abstract: According to one embodiment, a display device includes a display panel including a first area including a display area, a second area including a terminal portion and a third area located between the first area and the second area and a cover member adhered to the first area via an adhesive layer, and the display panel is bent in the third area so that the first area and the second area oppose each other on a side opposite to the cover member, and the third area is adhered to the cover member by a first resin.Type: ApplicationFiled: August 10, 2018Publication date: February 14, 2019Applicant: Japan Display Inc.Inventors: Yasushi TOMIOKA, Hajime YAMAGUCHI, Akio MURAYAMA
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Patent number: 10032421Abstract: According to one embodiment, a liquid display device includes a liquid crystal display panel provided with pixel which includes pixel electrode, and has gradation values that vary, a driver which drives the pixel electrode, and a processor which supplies, if the gradation value of the pixel varies, the driver with a correction image signal based on an addition image signal in which a voltage based on the gradation value and a compensation voltage are added. The compensation voltage is based on pixel capacitances prior to and subsequent to variation of the gradation value and a voltage subsequent to the variation of the gradation value.Type: GrantFiled: August 18, 2016Date of Patent: July 24, 2018Assignee: Japan Display Inc.Inventors: Hajime Yamaguchi, Yasushi Kawata, Akio Murayama
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Publication number: 20170173936Abstract: According to one embodiment, a method of manufacturing a display device, includes preparing a first substrate in which a first display element part, a first extension part, a second display element part, and a second extension part, are formed, preparing a second substrate in which a first peeling auxiliary layer, a second peeling auxiliary layer, a sacrifice layer, a first color filter layer, and a second color filter layer, are formed, attaching the first substrate and the second substrate, and radiating a laser beam on the second substrate, and peeling a second support substrate from the first peeling auxiliary layer and the second peeling auxiliary layer while blocking the laser beam by the sacrifice layer.Type: ApplicationFiled: March 1, 2017Publication date: June 22, 2017Applicant: Japan Display Inc.Inventors: Yasushi KAWATA, Akio MURAYAMA
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Patent number: 9630389Abstract: According to one embodiment, a method of manufacturing a display device, includes preparing a first substrate in which a first display element part, a first extension part, a second display element part, and a second extension part, are formed, preparing a second substrate in which a first peeling auxiliary layer, a second peeling auxiliary layer, a sacrifice layer, a first color filter layer, and a second color filter layer, are formed, attaching the first substrate and the second substrate, and radiating a laser beam on the second substrate, and peeling a second support substrate from the first peeling auxiliary layer and the second peeling auxiliary layer while blocking the laser beam by the sacrifice layer.Type: GrantFiled: December 24, 2013Date of Patent: April 25, 2017Assignee: Japan Display Inc.Inventors: Yasushi Kawata, Akio Murayama
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Publication number: 20170061910Abstract: According to one embodiment, a liquid display device includes a liquid crystal display panel provided with pixel which includes pixel electrode, and has gradation values that vary, a driver which drives the pixel electrode, and a processor which supplies, if the gradation value of the pixel varies, the driver with a correction image signal based on an addition image signal in which a voltage based on the gradation value and a compensation voltage are added. The compensation voltage is based on pixel capacitances prior to and subsequent to variation of the gradation value and a voltage subsequent to the variation of the gradation value.Type: ApplicationFiled: August 18, 2016Publication date: March 2, 2017Inventors: Hajime YAMAGUCHI, Yasushi KAWATA, Akio MURAYAMA
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Patent number: 8780303Abstract: According to one embodiment, a liquid crystal apparatus includes a first liquid crystal panel including a pair of substrates, and a dispersed liquid crystal held between the pair of substrates, and an active mirror placed behind the first liquid crystal panel, and configured to switch a first state in which linearly polarized light whose polarizing direction is a second direction is transmitted, and a second state in which the linearly polarized light whose polarizing direction is the second direction is absorbed or reflected.Type: GrantFiled: November 16, 2011Date of Patent: July 15, 2014Assignee: Japan Display Inc.Inventors: Kenji Nakao, Akio Murayama, Yasushi Kawata
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Publication number: 20140190621Abstract: According to one embodiment, a method of manufacturing a display device, includes preparing a first substrate in which a first display element part, a first extension part, a second display element part, and a second extension part, are formed, preparing a second substrate in which a first peeling auxiliary layer, a second peeling auxiliary layer, a sacrifice layer, a first color filter layer, and a second color filter layer, are formed, attaching the first substrate and the second substrate, and radiating a laser beam on the second substrate, and peeling a second support substrate from the first peeling auxiliary layer and the second peeling auxiliary layer while blocking the laser beam by the sacrifice layer.Type: ApplicationFiled: December 24, 2013Publication date: July 10, 2014Applicant: Japan Display Inc.Inventors: Yasushi KAWATA, Akio Murayama
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Publication number: 20120127394Abstract: According to one embodiment, a liquid crystal apparatus includes a first liquid crystal panel including a pair of substrates, and a dispersed liquid crystal held between the pair of substrates, and an active mirror placed behind the first liquid crystal panel, and configured to switch a first state in which linearly polarized light whose polarizing direction is a second direction is transmitted, and a second state in which the linearly polarized light whose polarizing direction is the second direction is absorbed or reflected.Type: ApplicationFiled: November 16, 2011Publication date: May 24, 2012Inventors: Kenji NAKAO, Akio Murayama, Yasushi Kawata
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Patent number: 8018561Abstract: Electrode slit portions are formed in a pixel electrode in a direction of crossing a slit for dividing a liquid crystal layer into a plurality of domains. A titanium oxide film is formed so as to be exposed to the liquid crystal layer side via the electrode slit portions, the titanium oxide film having a relative dielectric constant higher than that of an organic film formed at positions corresponding to the electrode slit portions. By the titanium oxide film, an electric field of each domain is set, angles between the director in the vicinity of the electrode slit portion and transmission axes of polarizing plates are made to approximately 45°, and a decrease in transmittance caused by the falling direction of the director can be suppressed. The transmittance and contrast ratio are secured, and simultaneously an excellent wide viewing angle range can be obtained.Type: GrantFiled: January 6, 2009Date of Patent: September 13, 2011Assignee: Toshiba Matsushita Display Technology Co., Ltd.Inventors: Masaki Obi, Azusa Ikeda, Hideki Ito, Yasushi Kawata, Akio Murayama
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Patent number: 7679705Abstract: A liquid crystal display device includes an array substrate and a counter-substrate, a liquid crystal layer which is held between the array substrate and counter-substrate and includes a transmissive display part and a reflective display part which neighbor each other via a boundary, an alignment state of liquid crystal molecules in the liquid crystal layer being controlled by an application voltage from the array substrate and counter-substrate in the transmissive display part and the reflective display part, and control means for making an alignment direction of the liquid crystal molecules, which are present near the boundary in the reflective display part, substantially match an alignment direction of the liquid crystal molecules which are present near the boundary in the transmissive display part.Type: GrantFiled: August 22, 2006Date of Patent: March 16, 2010Assignee: Toshiba Matsushita Display Technology Co., Ltd.Inventors: Takeshi Yamaguchi, Kisako Ninomiya, Yasushi Kawata, Yuuzo Hisatake, Akio Murayama, Norihiro Yoshida, Chigusa Tago
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Publication number: 20090270008Abstract: A stopper layer and a plurality of pixels are formed on a large-sized glass substrate by a conventional production process. An intermediate panel is formed by adhering a counter large-sized non-glass substrate onto the large-sized glass substrate. The large-sized glass substrate and the stopper layer are removed. A thinner film-shaped array large-sized non-glass substrate than the large-sized glass substrate is adhered to the counter large-sized non-glass substrate via an adhesive layer. It is possible to produce components including and up to the intermediate panel by using a conventional production process when transferring pixels (thin film transistor layer) onto the array large-sized non-glass substrate. Thinning and lightening of the liquid crystal display panel 11 can be achieved while preventing a remarkable increase in change in the production process and an increase in the number of indirect members.Type: ApplicationFiled: March 9, 2009Publication date: October 29, 2009Inventors: Yasushi KAWATA, Azusa Ikeda, Akio Murayama
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Publication number: 20090251651Abstract: Electrode slit portions are formed in a pixel electrode in a direction of crossing a slit for dividing a liquid crystal layer into a plurality of domains. A titanium oxide film is formed so as to be exposed to the liquid crystal layer side via the electrode slit portions, the titanium oxide film having a relative dielectric constant higher than that of an organic film formed at positions corresponding to the electrode slit portions. By the titanium oxide film, an electric field of each domain is set, angles between the director in the vicinity of the electrode slit portion and transmission axes of polarizing plates are made to approximately 45°, and a decrease in transmittance caused by the falling direction of the director can be suppressed. The transmittance and contrast ratio are secured, and simultaneously an excellent wide viewing angle range can be obtained.Type: ApplicationFiled: January 6, 2009Publication date: October 8, 2009Inventors: Masaki Obi, Azusa Ikeda, Hideki Ito, Yasushi Kawata, Akio Murayama
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Publication number: 20090201453Abstract: There is disclosed a liquid crystal display panel includes a first substrate, a second substrate arranged opposite to the first substrate with a gap, a liquid crystal layer held between the first and second substrates, and a plurality of pixels formed of the first substrate, the second substrate and the liquid crystal layer, and arrayed in a direction along a plane of the first and second substrates, each pixel having a plurality of pretilt angles different from each other.Type: ApplicationFiled: November 13, 2008Publication date: August 13, 2009Inventors: Masaki Obi, Yuuzo Hisatake, Hideki Ito, Yasushi Kawata, Akio Murayama
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Patent number: 7508475Abstract: A liquid crystal display device comprises a first substrate including a first insulation substrate, and rectangular pixel electrodes provided in a matrix on the first insulation substrate and elongated in a first direction, a second substrate opposing the first substrate, and including a second insulation substrate, a counter electrode on the second insulation substrate, and projections on the counter electrode, elongated in a second direction intersecting the first direction, and a liquid crystal layer held between the first and second substrates. The projections extend through pixel regions defined by the pixel electrodes and counter electrode, and are formed asymmetrical with respect to a first imaginary line passing through centers of opposite short sides of each pixel electrode and extending in the first direction, and with respect to a second imaginary line passing through centers of opposite long sides of each pixel electrode and extending in the second direction.Type: GrantFiled: January 9, 2007Date of Patent: March 24, 2009Assignee: Toshiba Matsushita Display Technology Co., Ltd.Inventors: Yasushi Kawata, Akio Murayama, Masaki Obi, Kisako Ninomiya, Norihiro Yoshida
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Publication number: 20080218866Abstract: On the back surface of a window member and a display surface of a liquid crystal display panel, the same antireflective structures having a plurality of convexities with predetermined dimensions not more than the wavelength of visible light are formed, respectively. While the liquid crystal display panel is protected by the window member, reflection of external light on the back surface of the window member and the display surface of the liquid crystal display panel and reflection of outgoing light from the liquid crystal display panel can be reduced by the convexities of the antireflective structures, so that visibility can be secured.Type: ApplicationFiled: January 28, 2008Publication date: September 11, 2008Inventors: Yasushi KAWATA, Masaki OBI, Akio MURAYAMA
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Patent number: 7397525Abstract: A first phase plate and a third phase plate, which constitute a polarizer structure, cooperate to impart a phase difference of a ¼ wavelength to linearly polarized light that emerges from a first polarizer plate. A second phase plate and a fourth phase plate cooperate to impart a phase difference of a ¼ wavelength to linearly polarized light that emerges from a second polarizer plate. Slow axes in planes of the first phase plate and the second phase plate are substantially parallel. A crossed-axes angle between slow axes in planes of the first phase plate and the third phase plate is 60°, a crossed-axes angle between slow axes in planes of the second phase plate and the fourth phase plate is 60°, and a crossed-axes angle between slow axes in planes of the third phase plate and fourth phase plate is 60°.Type: GrantFiled: May 25, 2005Date of Patent: July 8, 2008Assignee: Toshiba Matsushita Display Technology Co., Ltd.Inventors: Chigusa Tago, Yuzo Hisatake, Akio Murayama
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Publication number: 20080158500Abstract: The present invention provides parallax barrier layers on a first transparent substrate. A second transparent substrate is adhesively attached to the parallax barrier layer side of the first transparent substrate. The opposite side to the parallax barrier layers of the first transparent substrate is polished. Various kinds of functional films are formed on the polished first transparent substrate to form a counter substrate. The positional displacement between each parallax barrier layer and each pixel can be suppressed, and uniformity of the visual field angle and yield can be enhanced.Type: ApplicationFiled: December 13, 2007Publication date: July 3, 2008Inventors: Yasushi KAWATA, Hideki Ito, Akio Murayama