Patents by Inventor Yuji Souda

Yuji Souda 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: 4952030
    Abstract: A liquid crystal display device of negative display type, which comprises a liquid crystal cell comprising a nematic liquid crystal layer sandwiched between substrates provided with electrodes, a light shielding layer covering other than the area corresponding to a display pattern, a pair of polarizing films provided on both sides of the liquid crystal cell with their polarization axes arranged to permit light from a no voltage-applied portion to pass therethrough, said liquid crystal cell being adapted to apply a voltage sufficient to energize the nematic liquid crystal to the electrodes at a display pattern area other than a desired display pattern, wherein a twist angle of liquid crystal layer is in a range of 50.degree.-80.degree..
    Type: Grant
    Filed: August 29, 1988
    Date of Patent: August 28, 1990
    Assignee: Asahi Glass Company, Ltd.
    Inventors: Yutaka Nakagawa, Tetsuro Matsumoto, Yuji Souda, Yosinori Hirai