Patents by Inventor Toshiaki Takamatsu

Toshiaki Takamatsu 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).

  • Patent number: 4405209
    Abstract: There discloses a matrix liquid-crystal display device which is effective for the display of images particularly in a TV set and in which the liquid-crystal layer contains a dopant in a specific range of quantity which is far greater than a quantity of dopant employed in any known device.
    Type: Grant
    Filed: February 10, 1981
    Date of Patent: September 20, 1983
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Fumiaki Funada, Toshiaki Takamatsu, Ishii Yutaka, Tomio Wada
  • Patent number: 4373784
    Abstract: An electrode structure on a matrix type liquid crystal display panel includes M column electrodes and N row electrodes both of which cross each other at a right angle to define picture elements via a layer of liquid crystal material. The matrix shaped electrode structure is such that a third picture element C (X.sub.m ', X.sub.n ') is located between a first picture element A (X.sub.m, Y.sub.n) and a second picture element B (X.sub.m+1, Y.sub.n+1), wherein 1.ltoreq.m.ltoreq.M and 1.ltoreq.n.ltoreq.N, thus enhancing resolution in vertical and horizontal directions. A diamond shape is exemplary of the possible shapes of the picture elements wherein each pair of the diagonally disposed corners are connected to that of their adjacent elements.
    Type: Grant
    Filed: April 24, 1980
    Date of Patent: February 15, 1983
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Keisaku Nonomura, Toshiaki Takamatsu, Hisashi Uede, Tomio Wada
  • Patent number: 4335937
    Abstract: Within a matrix display type liquid crystal display having a first family of electrodes aligned in one direction at least the viewing side of which is made of transparent conducting material, a second family of electrodes aligned in a different direction crossed with said one direction, and a liquid crystal material between the both families of the electrodes, a respective one of the electrodes of at least one family of said both electrode families is made up of a picture element electrode and a wiring electrode for connecting the picture element electrodes and an extension electrode connected to the wiring electrode and an electrode width at a portion thereof other than a picture element area wider than the picture element are for the purpose of reducing the resistance of the wiring electrode.
    Type: Grant
    Filed: October 27, 1978
    Date of Patent: June 22, 1982
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Toshiaki Takamatsu, Keiichiro Shimizu, Tomio Wada, Keisaku Nonomura
  • Patent number: 4335936
    Abstract: A multi-layer, matrix type liquid crystal display panel is provided with an electrode structure which prevents the display dots from being overlapped with each other. Each of display patterns is provided through the utilization of a necessary number of line electrodes and a necessary number of column electrodes. According to the present invention, at least a necessary number of the line electrodes per display pattern unit are disposed as a single family in the front side cell or in the rear side cell. The respective families of the line electrodes are disposed alternatively in the front cell or in the rear cell, keeping the display dots within the same display pattern from being overlapped with respect to each other.
    Type: Grant
    Filed: October 12, 1978
    Date of Patent: June 22, 1982
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Keisaku Nonomura, Hisashi Uede, Tomio Wada, Toshiaki Takamatsu
  • Patent number: 4326929
    Abstract: A method is disclosed for forming an electrode pattern which is free of erosion, separation of a wiring pattern from a substrate, etc., through the use of a lift-up method, which comprises the steps of: etching a transparent, electrically conductive film deposited on a major surface of the substrate for the formation of the transparent electrode pattern; overlaying the whole of the major surface of the substrate with a layer of photoresist; removing a portion of said photoresist layer in the metal electrode pattern; coating substantially the entire major surface of the substrate with a layer of metal electrode material; and removing the remaining photoresist layer with the aid of a resist remover thereby forming the metal electrode pattern.
    Type: Grant
    Filed: October 3, 1979
    Date of Patent: April 27, 1982
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Shigehiro Minezaki, Toshiaki Takamatsu, Shuichi Kozaki
  • Patent number: 4309814
    Abstract: A method for making a multi-layered liquid crystal display panel is provided herein. More particularly, the method enables double-sided rubbing on at least one of a plurality of stacked glass supports and avoids possible flaws in a rubbed surface through the utilization of a protective coating covering the rubbed surface, thus providing liquid crystal display panels with excellent image quality. The protective coating is of sufficient mechanical strength and easily removable by means of a remover.
    Type: Grant
    Filed: January 18, 1980
    Date of Patent: January 12, 1982
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Toshiaki Takamatsu, Shigehiro Minezaki, Masataka Matsuura, Hisashi Uede
  • Patent number: 4308370
    Abstract: A process for preparing polyvinylidene fluoride type (PVDF) films having highly stable piezoelectricity and pyroelectricity, by stretching PVDF films, while causing corona discharge, across the electric field formed by discharging, to effect thereby to polarization of film.
    Type: Grant
    Filed: April 21, 1980
    Date of Patent: December 29, 1981
    Assignees: Rikagauku Kenkyusho, Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Eiichi Fukada, Takeo Furukawa, Munehiro Date, Toshiaki Takamatsu, Ken'ichi Nakamura
  • Patent number: 4299450
    Abstract: An elastomer display system comprising a transparent silicon elastomer and electrodes for establishing a nonuniform electric field in the transparent silicon elastomer. Organic fluorescent centers are disposed within the transparent silicon elastomer. The electrodes are shaped in a desired configuration to ensure creation of the frost deformation in the transparent silicon elastomer when a predetermined voltage signal is applied to the electrodes. The frost deformation functions as a scattering center for the fluorescence derived from the organic fluorescent centers, thereby displaying a desired pattern.
    Type: Grant
    Filed: August 14, 1979
    Date of Patent: November 10, 1981
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Fumiaki Funada, Toshiaki Takamatsu, Shigehiro Minezaki
  • Patent number: 4281324
    Abstract: In a method for driving row electrodes (or column electrodes) of a matrix type liquid crystal display panel having a predetermined number of the row electrodes and a predetermined number of the column electrodes, different drive voltages are supplied to the row electrodes or the column electrodes so as to assure, the highest contrast despite different viewing or displaying positions.
    Type: Grant
    Filed: October 27, 1978
    Date of Patent: July 28, 1981
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Keisaku Nonomura, Toshiaki Takamatsu, Hisashi Uede, Tomio Wada
  • Patent number: 3968790
    Abstract: Disclosed is an electret for use in regeneration of bones which is essentially made of polytetrafluoroethylene (Teflon), polyhexafluoropropylene (FEP Teflon), polyester (Mylar), polypropylene and other substances having high molecular weight, or carnauba wax, bees wax, rosin and other waxy or resinous substances having lower molecular weight. The electret according to this invention when applied to broken bones will expedite the callus formation on bones.
    Type: Grant
    Filed: February 26, 1975
    Date of Patent: July 13, 1976
    Assignee: Rikagaku Kenkyusho
    Inventors: Eiichi Fukada, Toshiaki Takamatsu, Iwao Yasuda