Patents by Inventor Shyuichi Kozaki

Shyuichi Kozaki 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: 5054910
    Abstract: A projection apparatus includes three liquid crystal panels for independently controlling respective color light components of red, green and blue for a color image to be reproduced. The apparatus further includes devices for subjecting the respective color light components to additive mixture so as to reproduce the color image. Each of the liquid crystal panels is constituted by a nematic type simple matrix liquid crystal panel having twist angle .phi. of its liquid crystal molecule represented
    Type: Grant
    Filed: October 2, 1989
    Date of Patent: October 8, 1991
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Shyuichi Kozaki, Fumiaki Funada
  • Patent number: 5035928
    Abstract: Disclosed is an improvement of an active matrix type liquid crystal display device using a combination of a specific mixed liquid crystal and a specific polyimide orientation film.
    Type: Grant
    Filed: September 4, 1990
    Date of Patent: July 30, 1991
    Assignees: Sharp Kabushiki Kaisha & Chisso Corp., Chisso Corp.
    Inventors: Shyuichi Kozaki, Masako Okada, Fumiaki Funada, Kei Sasaki, Hideo Saito, Fusayuki Takeshita
  • Patent number: 4973137
    Abstract: A liquid crystal display device which comprises first and second electrode substrates spaced a predetermined distance from each other, a nematic liquid crystal layer added with an optically active material and having a positive dielectric anisotropy, which layer is sandwiched between the first and second electrode substrates such that the liquid crystal molecules exhibit a helical structure in which they are twisted in a predetermined twist angle in a direction across the thickness of the liquid crystal layer, a light detecting element positioned on one side of the first electrode substrate remote from the liquid crystal layer, a polarizing element positioned on one side of the second electrode substrate remote from the liquid crystal layer, and a film-like sheet having a birefringence and disposed between the light detecting element and the first electrode substrate, and/or between the polarizing element and the second electrode substrate.
    Type: Grant
    Filed: October 31, 1988
    Date of Patent: November 27, 1990
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Shyuichi Kozaki
  • Patent number: 4856875
    Abstract: A liquid-crystal display device of the twisted nematic type which comprises (1) a pair of electrode substrates facing each other, each being provided with an orientation membrane, the surface of which is treated by rubbing, and (2) a specific nematic liquid-crystal composition having a positive dielectric anisotropy containing a pyrimidine derivative of formula (I), ##STR1## wherein R.sub.1 and R.sub.2 are each a straight-chain alkyl group of 1 to 12 carbon atoms and containing an optically active substance, sandwiched between the two electrode substrates and arranged so that the axes of the liquid-crystal molecules will be twisted by an angle .phi. in the range of, which shows excellent multiplex driving characteristics and suitable for use in display units of heavy-duty multiplex driving type.
    Type: Grant
    Filed: December 29, 1987
    Date of Patent: August 15, 1989
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Shyuichi Kozaki, Yukiko Ichimura, Yozo Narutako