Patents by Inventor Mitsuo Oizumi
Mitsuo Oizumi 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: 10191602Abstract: A capacitive input device having a curved surface shape includes: an external body molded with a synthetic resin, the external body having an external curved surface facing a user; a film base, which is integrally provided so as to conform to the internal curved surface of the external body; a conductive layer made of conductive macromolecules, the conductive layer being formed on an opposite surface of the film base, the opposite surface being opposite to a bonded surface, of the film base, that is bonded to the external body; and wiring layers that are electrically connected to the conductive layer.Type: GrantFiled: February 12, 2016Date of Patent: January 29, 2019Assignee: ALPS ELECTRIC CO., LTD.Inventors: Tsutomu Kiyoshi, Mitsuo Oizumi, Hidekazu Takahashi
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Publication number: 20160162077Abstract: A capacitive input device having a curved surface shape includes: an external body molded with a synthetic resin, the external body having an external curved surface facing a user; a film base, which is integrally provided so as to conform to the internal curved surface of the external body; a conductive layer made of conductive macromolecules, the conductive layer being formed on an opposite surface of the film base, the opposite surface being opposite to a bonded surface, of the film base, that is bonded to the external body; and wiring layers that are electrically connected to the conductive layer.Type: ApplicationFiled: February 12, 2016Publication date: June 9, 2016Inventors: Tsutomu Kiyoshi, Mitsuo Oizumi, Hidekazu Takahashi
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Publication number: 20090147193Abstract: A liquid crystal display device includes: a liquid crystal panel including a pair of substrates being disposed so as to oppose to each other and having electrodes and alignment films formed respectively on the opposing surfaces thereof, and liquid crystal layer in which nematic liquid crystal encapsulated between the pair of substrates is aligned in the horizontal direction to be at substantially 0° in twist angle by giving a pretilt in a predetermined direction by the alignment film, a polarizing plate(s) being arranged on the front side and back side of the liquid crystal panel and being set in direction of polarization to provide a black level when a drive voltage to be applied between the electrodes is brought into an OFF state, and optical compensating means disposed between the polarizing plate(s) and the liquid crystal panel for performing optical compensation for the liquid crystal layer.Type: ApplicationFiled: February 5, 2009Publication date: June 11, 2009Applicant: Alps Electric Co., Ltd.Inventors: Tatsuo Uchida, Takahiro Ishinabe, Mitsuru Kano, Mitsuo Oizumi
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Patent number: 7495727Abstract: A liquid crystal display apparatus includes a liquid crystal cell, first and second phase plates and a first polarizing plate stacked, in this order, on the outer surface of a first transparent substrate, third and fourth phase plates and a second polarizing plate stacked, in this order, on the outer surface of a second transparent substrate. The optical characteristics of the liquid crystal cell, the first to fourth phase plates, and the first and second polarizing plates are set within a predetermined range.Type: GrantFiled: December 23, 2005Date of Patent: February 24, 2009Assignee: Alps Electric Co., Ltd.Inventors: Mitsuo Oizumi, Mitsuro Kano, Yuzo Hayashi
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Patent number: 7268845Abstract: A liquid crystal display device includes a liquid crystal cell having a pair of transparent substrates opposite to each other and a liquid crystal layer provided between the pair of substrates; first and second retardation plates and a first polarizing plate that are sequentially formed on an outer surface of one of the pair of substrates; and third and fourth retardation plates and a second polarizing plate that are sequentially formed on an outer surface of the other substrate of the pair of substrates. Optical characteristics of the liquid crystal cell, the first to fourth retardation plates, and the first and second polarizing plates are set in predetermined ranges.Type: GrantFiled: December 23, 2005Date of Patent: September 11, 2007Assignee: Alps Electric Co., Ltd.Inventor: Mitsuo Oizumi
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Publication number: 20070177096Abstract: A liquid crystal display is provided. The liquid crystal display includes a pair of substrates. The pair of substrates are disposed opposite to each other, having electrodes disposed above the opposed faces of the substrates. A nematic liquid crystal layer is disposed between the substrates and has a positive dielectric anisotropy. The electrodes are disposed above at least one of the substrates have slits. The centers of the slits are displaced from the centers of the electrodes disposed above the other substrate.Type: ApplicationFiled: January 30, 2007Publication date: August 2, 2007Applicants: TOHOKU UNIVERSITY, ALPS ELECTRIC CO., LTD.Inventors: Tatsuo UCHIDA, Takahiro Ishinabe, Mitsuo Oizumi, Mitsuru Kano, Yuzo Hayashi
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Publication number: 20070146599Abstract: A liquid crystal display device is provided. In the liquid crystal display device, a whole face of an alignment layer disposed above a substrate is uniformly subjected to first alignment treatment (uniform treatment) such as rubbing treatment in an a direction. Second alignment treatment is performed in a b direction (second direction) making an angle of about 90 degrees with the a direction and in a c direction (third direction) opposite to the a direction such that regions narrow than regions subjected to the first alignment treatment. This allows micro-regions subjected to alignment treatment in the a, b, and/or c direction to be present at intersections of zones extending in the b or c direction. The micro-regions are located in light-shielding sections.Type: ApplicationFiled: December 22, 2006Publication date: June 28, 2007Applicants: ALPS ELECTRIC CO., LTD., TOHOKU UNIVERSITYInventors: Tatsuo UCHIDA, Takahiro Ishinabe, Tetsuya Miyashita, Ken Kuboki, Mitsuru Kano, Yuzo Hayashi, Yohei Iida, Mitsuo Oizumi
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Publication number: 20060285038Abstract: A liquid crystal display device includes: a liquid crystal panel including a pair of substrates being disposed so as to oppose to each other and having electrodes and alignment films formed respectively on the opposing surfaces thereof, and liquid crystal layer in which nematic liquid crystal encapsulated between the pair of substrates is aligned in the horizontal direction to be at substantially 0° in twist angle by giving a pretilt in a predetermined direction by the alignment film, a polarizing plate(s) being arranged on the front side and back side of the liquid crystal panel and being set in direction of polarization to provide a black level when a drive voltage to be applied between the electrodes is brought into an OFF state, and optical compensating means disposed between the polarizing plate(s) and the liquid crystal panel for performing optical compensation for the liquid crystal layer.Type: ApplicationFiled: November 18, 2005Publication date: December 21, 2006Inventors: Tatsuo Uchida, Takahiro Ishinabe, Mitsuru Kano, Mitsuo Oizumi
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Publication number: 20060192914Abstract: A liquid crystal display apparatus includes a liquid crystal cell, first and second phase plates and a first polarizing plate stacked, in this order, on the outer surface of a first transparent substrate, third and fourth phase plates and a second polarizing plate stacked, in this order, on the outer surface of a second transparent substrate. The optical characteristics of the liquid crystal cell, the first to fourth phase plates, and the first and second polarizing plates are set within a predetermined range.Type: ApplicationFiled: December 23, 2005Publication date: August 31, 2006Inventors: Mitsuo Oizumi, Mitsuro Kano, Yuzo Hayashi
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Publication number: 20060139534Abstract: A liquid crystal display device includes a liquid crystal cell having a pair of transparent substrates opposite to each other and a liquid crystal layer provided between the pair of substrates; first and second retardation plates and a first polarizing plate that are sequentially formed on an outer surface of one of the pair of substrates; and third and fourth retardation plates and a second polarizing plate that are sequentially formed on an outer surface of the other substrate of the pair of substrates. Optical characteristics of the liquid crystal cell, the first to fourth retardation plates, and the first and second polarizing plates are set in predetermined ranges.Type: ApplicationFiled: December 23, 2005Publication date: June 29, 2006Inventor: Mitsuo Oizumi
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Publication number: 20060017687Abstract: In a liquid crystal display device, in the vicinity of one end surface of a light guiding plate, a plurality of light sources are disposed. On a main surface of the light guiding plate facing a liquid crystal display panel, a light diffusing plate is disposed. On the light diffusing plate, the liquid crystal display panel is disposed. The liquid crystal display device includes a driving control unit that controls display of the liquid crystal display panel, a light source control unit that controls luminescence of the plurality of light sources, a synchronizing unit that synchronizes display of the liquid crystal display panel and the luminescence of the plurality of light sources, a pulse generating unit that generates pulses for driving the liquid crystal display panel or the plurality of light sources, and a correcting unit that corrects control parameters in the driving control unit and the light source control unit.Type: ApplicationFiled: July 14, 2005Publication date: January 26, 2006Inventors: Mitsuo Oizumi, Yuzo Hayashi
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Publication number: 20050275777Abstract: An LCD structure is disclosed in which an alignment film for causing liquid crystal molecules to be inclined at a pre-tilt angle smaller than 10° is formed on one substrate, and a vertical-alignment-type alignment film is formed in a reflective display portion of the other substrate. An alignment film for causing the liquid crystal molecules to be inclined at a pre-tilt angle smaller than 10° is provided in a transmissive display portion, and the pre-tilt direction of the alignment film on the one substrate corresponding to the transmissive display portion is reverse to the pre-tilt direction of the alignment film on the other substrate corresponding to the transmissive display portion.Type: ApplicationFiled: June 7, 2005Publication date: December 15, 2005Inventors: Mitsuo Oizumi, Mitsuru Kano