Patents by Inventor Alan G. Bruce

Alan G. Bruce 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).

  • Display cell having active and passive areas
    Patent number: 5130827
    Abstract: An LCD has both active and passive display areas. The active areas are presented by selective energization of dichroic liquid crystal, and the passive areas are created by a mask. The LCD cell includes a sealed cavity containing the dichroic liquid crystal which has an area substantially less than the total display area. The remaining portion of the LCD cell is free of liquid crystal and is transparent to the passage of light from a rear light source.
    Type: Grant
    Filed: September 10, 1990
    Date of Patent: July 14, 1992
    Assignee: Litton Systems, Inc.
    Inventors: Frank D. Pavone, Alan G. Bruce, Charles L. Guthrie