Patents by Inventor MARK L. RAYL

MARK L. RAYL 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).

  • Publication number: 20110248973
    Abstract: A current-driven display device includes sub-pixel drive circuits with integral photo-sensitive circuits that modify the respective sub-pixel drive currents as a function of the locally sensed ambient light level. The photo-sensitive circuit may include a photo-transistor or photo-resistor connected in the output circuit of a drive transistor used to control the on-off state of a respective sub-pixel element, or the photo-sensitive circuit may include a photo-resistor that adjusts a control voltage or current supplied to an input circuit of the drive transistor. In any event, the photo-sensitive circuits individually and independently adjust the drive current, and hence the luminance, of each sub-pixel element based on the locally sensed ambient light level to locally and dynamically compensate for changes in ambient light impinging on the display device.
    Type: Application
    Filed: April 9, 2010
    Publication date: October 13, 2011
    Applicant: DELPHI TECHNOLOGIES, INC.
    Inventors: FREDERICK F. KUHLMAN, MICHAEL J. MELEASON, MARK L. RAYL