Patents by Inventor Theodorus W. Lathouwers

Theodorus W. Lathouwers 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: 4264149
    Abstract: In a liquid crystal matrix display device in which the bistability effect of a cholesteric liquid crystal is used, the number of lines to be driven is increased by providing the electrodes (5) on grooves (3) provided in the supporting plates (1,2). The electrodes (5) partly overlap the part of a supporting plate present between two grooves. The electrode surface and the remaining surface of the supporting plates are covered by a dielectric layer (7). The grooves have a depth which is equal to half the desired thickness of the liquid crystal layer. Herewith a uniform thickness of the liquid crystal layer is also obtained.
    Type: Grant
    Filed: August 6, 1979
    Date of Patent: April 28, 1981
    Assignee: U.S. Philips Corporation
    Inventors: Maarten de Zwart, Theodorus W. Lathouwers