Patents Assigned to Hiechst Celanese Corporation
  • Color filter array for liquid crystal display device
    Patent number: 4877697
    Abstract: A liquid crystal display having display filter elements in registration with display electrodes. The filters are produced using color proofing films which are imaged to produce a regular pattern of dots. Filter elements are illuminated by electrodes selection to produce changeable images.
    Type: Grant
    Filed: May 26, 1988
    Date of Patent: October 31, 1989
    Assignees: Hoechst Aktiengesellschaft, Hiechst Celanese Corporation
    Inventors: Hansjoerg W. Vollmann, George S. K. Wong, Dennis Bellville