With Different Liquid Crystal Thickness For Each Color Of Filter Patents (Class 349/107)
  • Patent number: 5936688
    Abstract: A reflector includes a substrate, a plurality of convex/concave portions formed on the substrate, and a thin reflective film formed over the convex/concave portions. When light is incident upon the reflector from a certain direction, an intensity of reflected light in a viewing angle range of about -45.degree. to +45.degree. with respect to a regular reflection direction of the incident light is about 60% or more of an intensity of light which is incident upon a standard white plate from a direction inclined by about 30.degree. from a direction normal to the plate and is reflected to the direction normal to the plate.
    Type: Grant
    Filed: February 26, 1997
    Date of Patent: August 10, 1999
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Kazuhiko Tsuda, Masako Nakamura, Akiyoshi Fujii, Mariko Ban, Yasuhisa Itoh, Kozo Nakamura, Naofumi Kimura
  • Patent number: 5936693
    Abstract: An underlying electrode is formed on nearly the entire surface of an opposing substrate and a color filter is formed on the underlying electrode. An overcoat layer is formed on the color filter. A stripe-shaped overlying electrode connected to the underlying electrode and extending to a part of each pixel area is formed on the overcoat layer, and an alignment film is formed on the overlying electrode. Formed on a TFT substrate are TFT's, pixel electrodes and another alignment film which covers the TFT's and pixel electrodes. A liquid crystal is provided between both substrates. When a drive voltage is applied between the underlying electrode and the pixel electrodes, the drive voltage is applied almost directly to the liquid crystal between the overlying electrode and the pixel electrodes, and a drive voltage dropped by the color filter and overcoat layer is applied to the liquid crystal between the underlying electrode and the pixel electrodes.
    Type: Grant
    Filed: September 26, 1995
    Date of Patent: August 10, 1999
    Assignee: Casio Computer Co., Ltd.
    Inventors: Tetsushi Yoshida, Takashi Miyashita, Yoshinaga Miyazawa, Toshihiro Mannouji, Hiroko Awata, Yasushi Nakajima
  • Patent number: 5684552
    Abstract: A color liquid crystal display for improving the white balance of the color filter by using a multilayer structure of inorganic thin films and preventing a liquid crystal cell from being colored is provided. The spectral transmission characteristic is such that the transmission wavelength area of the G (green) filter is narrowed. For the pixel array having four pixels as a constituent, two pixels for the G filter are arranged diagonally and the remaining two pixels consist of R (red) and B (blue).
    Type: Grant
    Filed: December 21, 1994
    Date of Patent: November 4, 1997
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Tadayoshi Miyamoto, Youji Yoshimura, Yutaka Takafuji