Patents by Inventor Tomaoki Sekime

Tomaoki Sekime 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).

  • Reflection liquid crystal display device
    Patent number: 6567149
    Abstract: A reflection liquid crystal display device comprising only one polarization film, wherein the twist angle of a nematic liquid crystal ranges from 0° to 90°, the relationship between the difference between the indices of birefringence &Dgr;nLC, the thickness of the liquid crystal layer dLC, and the retardation of the phase plate RF is expressed by &Dgr;nLC.dLC=0.20 to 0.30 &mgr;m, RF-&Dgr;nLC.dLC=−0.20 to −0.
    Type: Grant
    Filed: October 13, 2000
    Date of Patent: May 20, 2003
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hisanori Yamaguchi, Tomaoki Sekime, Yoshio Iwai, Tetsu Ogawa