Patents by Inventor Fukuda Ichiro

Fukuda Ichiro 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).

  • Reflective liquid crystal display device having a compensator with a retardation value between 0.15 .mu.m and 0.38 .mu.m and a single polarizer
    Patent number: 5619356
    Abstract: A reflective liquid crystal display device including: a first substrate; a second substrate; a liquid crystal layer interposed between the first substrate and the second substrate; electrodes for applying a voltage to the liquid crystal layer; a polarizing plate provided on a side of the liquid crystal layer on which the first substrate is provided; a reflective member provided on a side of the liquid crystal layer on which the second substrate is provided; and an optical compensation member provided between the polarizing plate and the liquid crystal layer, wherein the liquid crystal layer has a twist angle in a range of 220.degree. to 260.degree. and a retardation value of 0.5 .mu.m to 0.8 .mu.m, the optical compensation member has a retardation value in a range of 0.15 .mu.m to 0.38 .mu.m, and an angle .beta.
    Type: Grant
    Filed: September 16, 1994
    Date of Patent: April 8, 1997
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Nakamura Kozo, Mitsui Seiichi, Fukuda Ichiro