Patents Represented by Attorney, Agent or Law Firm J. Sbrollini
  • Discotic-type twist-film compensated single-domain or two-domain twisted nematic liquid crystal displays
    Patent number: 6181400
    Abstract: A twist discotic-type liquid-crystal or liquid-crystalline film with negative birefringence is as a compensation film for either single-domain or two-domain liquid crystal display cells to achieve better view-angle characteristics, less color-shift as a function of applied voltage, and faster response times than uncompensated 90°-twist single-domain or two-domain cells.
    Type: Grant
    Filed: November 19, 1999
    Date of Patent: January 30, 2001
    Assignee: International Business Machines Corporation
    Inventors: Kei-Hsiung Yang, Minhua Lu