Patents by Inventor Masato Shimura

Masato Shimura 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).

  • Publication number: 20110069270
    Abstract: A liquid crystal display device that includes: a liquid crystal display panel configured by a pair of substrates sandwiching therebetween a liquid crystal material with a positive dielectric anisotropy; and a flat-shaped common electrode and a pixel electrode disposed on one of the pair of substrates with an overlay, via an insulator layer, between the common electrode and the pixel electrode when viewed from above. In the liquid crystal display device, the pixel electrode is extended in a first direction, and includes a plurality of comb-like electrode sections aligned in a second direction orthogonal to the first direction, and the comb-like electrode sections of the pixel electrode are varied in width in the second direction for a plurality of times at intervals shorter than a side extending in the first direction.
    Type: Application
    Filed: November 24, 2010
    Publication date: March 24, 2011
    Inventors: Masato Shimura, Tohru Sasaki, Toshiki Asakura, Makiko Imabayashi
  • Patent number: 7864282
    Abstract: A liquid crystal display device that includes: a liquid crystal display panel configured by a pair of substrates sandwiching therebetween a liquid crystal material with a positive dielectric anisotropy; and a flat-shaped common electrode and a pixel electrode disposed on one of the pair of substrates with an overlay, via an insulator layer, between the common electrode and the pixel electrode when viewed from above. In the liquid crystal display device, the pixel electrode is extended in a first direction, and includes a plurality of comb-like electrode sections aligned in a second direction orthogonal to the first direction, and the comb-like electrode sections of the pixel electrode are varied in width in the second direction for a plurality of times at intervals shorter than a side extending in the first direction.
    Type: Grant
    Filed: March 28, 2007
    Date of Patent: January 4, 2011
    Assignee: Hitachi Displays, Ltd.
    Inventors: Masato Shimura, Tohru Sasaki, Toshiki Asakura, Makiko Imabayashi
  • Patent number: 7714969
    Abstract: In a liquid crystal display device having a first planar electrode and a second electrode formed on the first electrode with an insulating film in between, the response time of a liquid crystal is made shorter than that in a related art. A liquid crystal display device includes: a first substrate having a first electrode, an insulating film provided in an upper layer than the first electrode, and a second electrode provided in an upper layer than the insulating film; a second substrate; and a liquid crystal sandwiched between the first substrate and the second substrate. The liquid crystal display device drives the liquid crystal by generating an electric field by the first electrode and the second electrode. The second electrode has plural slits closed at both ends, the first electrode is a planar electrode superimposed on the plural slits, and, given that the length of the respective slits is Ls, the length Ls of the respective slits satisfies 12 ?m?Ls?30 ?m, more preferably, 12?m?Ls?20 ?m.
    Type: Grant
    Filed: July 9, 2008
    Date of Patent: May 11, 2010
    Assignee: Hitachi Displays, Ltd.
    Inventors: Toshiki Asakura, Masato Shimura, Makiko Imabayashi, Takanori Nakayama
  • Publication number: 20090015774
    Abstract: In a liquid crystal display device having a first planar electrode and a second electrode formed on the first electrode with an insulating film in between, the response time of a liquid crystal is made shorter than that in a related art. A liquid crystal display device includes: a first substrate having a first electrode, an insulating film provided in an upper layer than the first electrode, and a second electrode provided in an upper layer than the insulating film; a second substrate; and a liquid crystal sandwiched between the first substrate and the second substrate. The liquid crystal display device drives the liquid crystal by generating an electric field by the first electrode and the second electrode. The second electrode has plural slits closed at both ends, the first electrode is a planar electrode superimposed on the plural slits, and, given that the length of the respective slits is Ls, the length Ls of the respective slits satisfies 12 ?m?Ls?30 ?m, more preferably, 12?m?Ls?20 ?m.
    Type: Application
    Filed: July 9, 2008
    Publication date: January 15, 2009
    Inventors: Toshiki Asakura, Masato Shimura, Makiko Imabayashi, Takanori Nakayama
  • Publication number: 20070242205
    Abstract: A liquid crystal display device that includes: a liquid crystal display panel configured by a pair of substrates sandwiching therebetween a liquid crystal material with a positive dielectric anisotropy; and a flat-shaped common electrode and a pixel electrode disposed on one of the pair of substrates with an overlay, via an insulator layer, between the common electrode and the pixel electrode when viewed from above. In the liquid crystal display device, the pixel electrode is extended in a first direction, and includes a plurality of comb-like electrode sections aligned in a second direction orthogonal to the first direction, and the comb-like electrode sections of the pixel electrode are varied in width in the second direction for a plurality of times at intervals shorter than a side extending in the first direction.
    Type: Application
    Filed: March 28, 2007
    Publication date: October 18, 2007
    Inventors: Masato Shimura, Tohru Sasaki, Toshiki Asakura, Makiko Imabayashi
  • Publication number: 20020033666
    Abstract: The present invention aims at the suppression of the generation of heat in an organic electroluminescent display. To achieve such an object, the organic electroluminescent display includes a transparent substrate, an organic light emitting layer which is formed on a back surface side of the transparent substrate, electric current supply means which makes the electric current flow through the organic light emitting layer, a housing which covers at least the organic light emitting layer and is sealed to the transparent substrate, and heat radiation material in a liquid form which is filled in a space formed between the housing and the transparent substrate.
    Type: Application
    Filed: June 21, 2001
    Publication date: March 21, 2002
    Inventors: Yuji Mori, Masato Shimura, Yoshiharu Nagae
  • Publication number: 20020033908
    Abstract: Improving low power consumption is provided. A multilayer structure of a first electrode and an organic light-emitting layer plus a second electrode is formed on a liquid crystal-side surface of one substrate of respective substrates that are disposed to oppose each other with a layer of liquid crystals interposed therebetween, featuring that the organic light-emitting layer emits light rays in a way responsive to receipt of a current which is caused to flow between the first electrode and the second electrode.
    Type: Application
    Filed: September 18, 2001
    Publication date: March 21, 2002
    Inventors: Yuji Mori, Yoshiharu Nagae, Masato Shimura
  • Patent number: 6122465
    Abstract: A color liquid crystal display device includes a liquid crystal element, an optical path conversion element array and a hologram. The liquid crystal element has a blue pixel B, a red pixel R, and a green pixel G, which are arranged plainly, and a liquid crystal layer. The optical path conversion element array converts external light into approximately parallel light. The hologram separates light from the optical path conversion element array into a light having a wavelength range of the three primary colors and irradiates pixels R, G and B corresponding to the liquid crystal element.
    Type: Grant
    Filed: March 10, 1995
    Date of Patent: September 19, 2000
    Assignee: Hitachi, Ltd.
    Inventors: Ikuo Hiyama, Akira Arimoto, Masato Shimura
  • Patent number: 6040887
    Abstract: A liquid crystal display device comprising a black mask formed on one of a pair of substrates at least one of which is transparent, a group of electrodes formed on at least one of the pair of substrates, a liquid crystal layer comprising a liquid crystal composition substance having a dielectric anisotropy and held between the pair of substrates, an orientation control film formed between the liquid crystal layer and one of the substrates for orienting liquid crystal molecules of the liquid crystal composition substance in a predetermined direction, a polarizer laminated on at least one of the pair of substrates, and a driver for applying a drive voltage to the group of electrodes, wherein the group of electrodes has a structure that the electrodes are so arranged as to generate an electric field having a component predominantly in parallel with the interface between the orientation control film and the liquid crystal layer, the liquid crystal composition substance has a resistivity of not smaller than 10.
    Type: Grant
    Filed: October 28, 1998
    Date of Patent: March 21, 2000
    Assignee: Hitachi, Ltd.
    Inventors: Shigeru Matsuyama, Hiroaki Asuma, Masato Shimura, Yoshifumi Tomita, Sukekazu Aratani
  • Patent number: 5831701
    Abstract: A liquid crystal display device comprising a black mask formed on one of a pair of substrates at least one of which is transparent, a group of electrodes formed on at least one of the pair of substrates, a liquid crystal layer comprising a liquid crystal composition substance having a dielectric anisotropy and held between the pair of substrates, an orientation control film formed between the liquid crystal layer and one of the substrates for orienting liquid crystal molecules of the liquid crystal composition substance in a predetermined direction, a polarizer laminated on at least one of the pair of substrates, and a driver for applying a drive voltage to the group of electrodes, wherein the group of electrodes has a structure that the electrodes are so arranged as to generate an electric field having a component predominantly in parallel with the interface between the orientation control film and the liquid crystal layer, the liquid crystal composition substance has a resistivity of not smaller than 10.
    Type: Grant
    Filed: June 6, 1996
    Date of Patent: November 3, 1998
    Assignee: Hitachi, Ltd.
    Inventors: Shigeru Matsuyama, Hiroaki Asuma, Masato Shimura, Yoshifumi Tomita, Sukekazu Aratani
  • Patent number: 5677705
    Abstract: The object of the invention is to provide a drive method suitable for driving a fast-responding STN liquid crystal display device which ensures a minimized cross talk and improved contrast in display. The drive method comprises a memory means for storing display data corresponding to a plurality of lines, a function generating means for generating a drive function for the row electrodes, an arithmetic means for computing the outputs from the foregoing means, a column electrode drive means for driving the column electrodes in dependency on the output from the arithmetic means, and a row electrode drive means for driving the row electrodes in accordance with respective row electrode drive functions. As a voltage function to be applied to each row during drive operation, a sum of a plurality of orthogonal functions is utilized. Thereby, degradation in contrast due to display patterns as well as the cross talk can be minimized.
    Type: Grant
    Filed: June 21, 1994
    Date of Patent: October 14, 1997
    Assignee: Hitachi, Ltd.
    Inventors: Masato Shimura, Katsumi Kondo, Masaaki Kitajima, Hiroshi Kurihara, Tatsuhisa Fujii, Shigeyuki Nishitani
  • Patent number: 5157526
    Abstract: The polarizer of the present invention is composed of mediums having different refractive indices, by which ordinary light in incidented light is wholly reflected at a boundary between laminated medium I and medium II and extraordinary light is transmitted through the medium II. The medium II is so arranged as to be almost 45.degree. to the light axis, and thickness of the medium II is selected as a value with which the medium II works as a half wave length plate to the transmitting light. The polarizer, which has high transparency by reduction of absorption and is able to make most of incident light be similarly polarized light, is obtained. A polarizer for and apparatus for bright liquid crystal display, which is able to be enlarged to a large size display without light absorption, can be provided.
    Type: Grant
    Filed: July 1, 1991
    Date of Patent: October 20, 1992
    Assignee: Hitachi, Ltd.
    Inventors: Katsumi Kondo, Junichi Hirakata, Osamu Ito, Teruo Kitamura, Shuichi Ohara, Naoki Kikuchi, Masato Shimura
  • Patent number: 5093888
    Abstract: An optical transmitting system comprising a light source, an optical transmitting portion from the light source, and an optical detecting portion characterized in that a fraction of deuterium substitution for hydrogen in a repeat unit of an organic polymer composing the optical transmitting portion is at most 40%, fluorine content in said organic polymer is less than 40% by weight, and said organic polymer comprises an amorphous polymer which satisfies the equation (I):(.rho./M)(9.1.times.10.sup.-5.n.sub.CH +9.1.times.10.sup.-4.n.sub.NH +1.5.times.10.sup.-3.n.sub.OH)<5.3.times.10.sup.-6 (I)[where, .rho. is density of the polymer (g/cm.sup.3), M is molecular weight of the repeat unit (g/mol), n.sub.CH, n.sub.NH, and n.sub.OH indicates number of combination of C--H bond, N--H bond, and O--H bond in the repeat unit respectively].
    Type: Grant
    Filed: April 18, 1991
    Date of Patent: March 3, 1992
    Assignee: Hitachi, Ltd.
    Inventors: Yoshitaka Takezawa, Shuichi Ohara, Seikich Tanno, Noriaki Taketani, Masato Shimura
  • Patent number: 4873030
    Abstract: There is provided a resinous optical transmitting element in which a core, through which light is transmitted, is formed into a predetermined non-linear configuration, and a cladding lower in refractive index than the core is in close contact with the core. A method of manufacturing the optical transmitting element comprises the steps of polymerizing polymeric material forming the core, within a mold having a predetermined non-linear cavity, subsequently removing the mold, and forming the cladding about the core. The resinous optical transmitting element obtained by the method can be formed into a selected one of various configurations in compliance with the purpose. In addition, the resinous optical transmitting element is less in distortion, making it possible to reduce the transmission loss.
    Type: Grant
    Filed: July 1, 1988
    Date of Patent: October 10, 1989
    Assignees: Hitachi, Ltd., Hitachi Cable, Ltd.
    Inventors: Noriaki Taketani, Hideki Asano, Akira Endo, Tomiya Abe, Masahiko Ibamoto, Junji Mukai, Seikichi Tanno, Shuji Eguchi, Masato Shimura