Patents by Inventor Hidehiro Seki

Hidehiro Seki 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: 5847789
    Abstract: A liquid crystal display device of high display quality and superior sharpness is presented. Large bumps and small bumps made of synthetic resin material are formed on a glass substrate. Covering these bumps and filling the recesses among the bumps, a smoothing film is formed. On the smoothing film, a reflective metal film made of metal material such as aluminum is formed. This reflective metal film is formed in plural rows in a longitudinal band form. On the glass substrate, the bumps, smoothing film, and reflective metal film are combined to compose a reflector. An orientation film is formed on the reflective metal film. By the electric field applied in the liquid crystal layer so as to be in the light shielding state when the retardation .DELTA.n.sub.1 d.sub.1 of the liquid crystal cell and the retardation .DELTA.n.sub.2 d.sub.2 of the substrate possessing optical phase compensating function satisfy .vertline..DELTA.n.sub.1 d.sub.1 -.DELTA.n.sub.2 d.sub.2 .vertline./.lambda.=0.25+m/2.+-.0.
    Type: Grant
    Filed: July 2, 1997
    Date of Patent: December 8, 1998
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Kozo Nakamura, Seiichi Mitsui, Naofumi Kimura, Tatsuo Uchida, Hidehiro Seki
  • Patent number: 5684551
    Abstract: A liquid crystal display device of high display quality and superior sharpness is presented. Large bumps and small bumps made of synthetic resin material are formed on a glass substrate. The bottom diameters of the large bumps and small bumps are defined, for example, at 5 .mu.m and 3 .mu.m, respectively, and their interval is at least, for example, 2 .mu.m or more. Covering these bumps and filling the recesses among the bumps, a smoothing film is formed. On the smoothing film, a reflective metal film made of metal material such as aluminum is formed. This reflective a metal film is formed in plural rows in a longitudinal band form. On the glass substrate, the bumps, smoothing film, and reflective metal film are combined to compose a reflector. An orientation film is formed on the reflective metal film. By the electric field applied in the liquid crystal layer so as to be in the light shielding state when the retardation .DELTA.n.sub.1 d.sub.1 of the liquid crystal cell and the retardation .DELTA.n.sub.2 d.
    Type: Grant
    Filed: September 11, 1995
    Date of Patent: November 4, 1997
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Kozo Nakamura, Seiichi Mitsui, Naofumi Kimura, Tatsuo Uchida, Hidehiro Seki