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Liquid crystal display

  • US 7,468,721 B2
  • Filed: 04/18/2003
  • Issued: 12/23/2008
  • Est. Priority Date: 11/20/2002
  • Status: Expired due to Fees
First Claim
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1. A transmissive liquid crystal display comprising:

  • a transmissive liquid crystal display panel having a display surface;

    an optical sensor placed on the rear face of said display surface; and

    a backlight for illuminating said display surface,whereinin a first state of the transmissive liquid crystal display panel where a first image having the greatest light transmittance in liquid crystal is displayed on said display surface with said backlight being turned off, said optical sensor detects light that has been directed from the outside of said panel through said display surface,each image to be sensed by an observer of the display surface is illuminated by the backlight at a luminance adjusted based on the detection by the optical sensor in the first state, andsaid first state is set to occur in such a manner to avoid the observer sensing the first image.

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