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Display device with feedback brightness sensing

  • US 6,713,745 B2
  • Filed: 06/28/2002
  • Issued: 03/30/2004
  • Est. Priority Date: 06/28/2002
  • Status: Expired due to Fees
First Claim
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1. A display device with feedback brightness sensing, comprising:

  • a display device, having a display panel;

    a first photo-sensor, sensing a light brightness variation of an external environment of the display panel and outputting a corresponding sensing signal;

    a first converter, connected to the first photo-sensor and converting the sensing signal to a corresponding first digital reference signal;

    a light-guiding element, receiving and transmitting a light brightness emitted from the display panel;

    a feedback sensing unit, comprised of a second photo-sensor and a second converter, the second photo-sensor sensing a light variation from the light-guiding element that is converted through the second converter to a second digital reference signal; and

    a microprocessor, controlling the light brightness emitted from the display panel according to a variation of the first and second digital reference signals.

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