Patents by Inventor Shigehiro Minezaki

Shigehiro Minezaki 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: 5191455
    Abstract: In a driving circuit for a liquid crystal apparatus, a DC offset voltage the level of which changes depending upon the level of input video signals is applied as an input video signal. The DC voltage which appears in the liquid crystal and the level of which changes depending upon the level of input video signals can be completely compensated.
    Type: Grant
    Filed: December 21, 1990
    Date of Patent: March 2, 1993
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Ryuji Hashimoto, Shigeaki Mizushima, Eiichiro Nishimura, Shigehiro Minezaki, Toshio Takemoto
  • Patent number: 5151298
    Abstract: A process for preparing an orientation film for liquid crystals which comprises forming a base layer of a thermoplastic or non-thermoplastic resin to be used for the orientation film, on a substrate for liquid crystal display, and rubbing the base layer under heating at a temperature not lower than 50.degree. C. but below the melting temperature of decomposition temperature of the resin.
    Type: Grant
    Filed: May 30, 1989
    Date of Patent: September 29, 1992
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Akihiro Nammatsu, Mitsuo Ishii, Shigehiro Minezaki
  • Patent number: 4690510
    Abstract: There is disclosed a structure of a matrix display unit having a matrix display panel with mutually perpendicular groups of signal and scaning electrodes and a wiring board mounting thereon a driver circuit having output terminals disposed on two marginal edges of the wiring board. At least one of the marginal edges is bent closely toward the matrix display panel. Terminal electrodes of one of the groups of the matrix electrodes are electrically connected to the bent marginal edge in confronting relation through an electrically conductive anisotropic member, terminal electrodes of the other group of the matrix electrodes are electrically connected to the other marginal edge through a bent electrically conductive anisotropy member or a flexible wiring sheet.
    Type: Grant
    Filed: December 2, 1985
    Date of Patent: September 1, 1987
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Toshiaki Takamatsu, Hiroshi Kuwagaki, Shigehiro Minezaki, Kunihiko Yamamoto, Hiroshi Nakatani, Hisao Kawaguchi
  • Patent number: 4528115
    Abstract: A liquid crystal composition comprising a mixed phase of the six kinds of the compounds such as ##STR1## and a liquid crystal display device of the multiplex drive type such as liquid crystal television device, which uses the above composition.
    Type: Grant
    Filed: May 2, 1983
    Date of Patent: July 9, 1985
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yutaka Ishii, Shigehiro Minezaki, Shuichi Kozaki, Fumiaki Funada
  • Patent number: 4514253
    Abstract: A thin film transistor is disclosed which has an insulator substrate, a gate electrode, a semiconductor layer and a source/drain electrode disposed on the insulator substrate. The source/drain electrode is patterned through a combination of mask deposition technique and photo-lithography technique.
    Type: Grant
    Filed: July 25, 1983
    Date of Patent: April 30, 1985
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Shigehiro Minezaki
  • Patent number: 4478741
    Abstract: A liquid crystal composition contains a compound of the formula: ##STR1## wherein R and R' are straight chain alkyl groups each having 1 to 7 carbon atoms.
    Type: Grant
    Filed: April 29, 1983
    Date of Patent: October 23, 1984
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Kenichi Nakagawa, Shigehiro Minezaki, Fumiaki Funada
  • Patent number: 4426133
    Abstract: A twisted nematic liquid crystal is characterized in that the direction of longitudinal axes of liquid crystal molecules adjacent each of a pair of polarizers is deviated with respect to the orientation vector of each of the polarizers in order to improve display contrast ratio.
    Type: Grant
    Filed: December 23, 1980
    Date of Patent: January 17, 1984
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Fumiaki Funada, Shigehiro Minezaki, Syuichi Kozaki, Hisashi Uede
  • Patent number: 4422730
    Abstract: A liquid crystal display device comprises a pair of substrates, a first patterned layer formed on a part of one of the substrates, a second layer formed on the remaining part of the one of the substrates, the thickness of the second layer being substantially identical to that of the first patterned layer to provide a layer uniform in thickness, and a third layer formed on the uniform layer to provide orientation of molecules of a liquid crystal layer disposed between the pair of substrates. The uniform layer is manufactured by the steps of forming the first patterned layer on part of the one of the substrates, and forming the second layer on the remaining part of the one of the substrates, using a lift-off method.
    Type: Grant
    Filed: October 16, 1980
    Date of Patent: December 27, 1983
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Shuichi Kozaki, Fumiaki Funada, Shigehiro Minezaki, Hisashi Uede
  • Patent number: 4411981
    Abstract: A method for Te pattern formation in the manufacture of a thin-film transistor having a semiconductor layer of Te. Developing and etching of the substrate having the Te layer and a resist layer overlaying the Te layer are simultaneously carried out by the use of a developing and etching solution after having been exposed to rays of UV-light.
    Type: Grant
    Filed: February 25, 1981
    Date of Patent: October 25, 1983
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Shigehiro Minezaki
  • Patent number: 4408837
    Abstract: A liquid crystal cell comprising a pair of opposing supports one carrying a patterned electrode and the other carrying a counter electrode placed vis-a-vis with the patterned electrode and a liquid crystal material sandwiched between the two electrodes, wherein at least the patterned electrode comprises an In.sub.2 O.sub.3 coating and a remaining portion of the support where the In.sub.2 O.sub.3 coating is not disposed comprises a CeO.sub.2 coating whose refractive index is substantially equal to that of the In.sub.2 O.sub.3 coating.
    Type: Grant
    Filed: June 26, 1981
    Date of Patent: October 11, 1983
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Syuichi Kozaki, Fumiaki Funada, Shigehiro Minezaki
  • 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: 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