Patents by Inventor Lih W. Chiang

Lih W. Chiang 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).

  • Drive circuit for operating electroluminescent display with enhanced contrast
    Patent number: 4837566
    Abstract: An improved drive circuit for operating an electroluminescent display includes a circuit for biasing column and row drivers to maximize the energization voltage for illuminated pixels without reducing the contrast of the display. Interface circuitry is also provided for detecting the beginning of valid data for each line to be displayed, checking the selected display mode of the line and adjusting the timing of a system clock to completely and uniformly display characters in the 40-column, 80-column or graphics display mode.
    Type: Grant
    Filed: January 27, 1988
    Date of Patent: June 6, 1989
    Assignee: The Cherry Corporation
    Inventors: Dean A. Channing, Lih W. Chiang