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Liquid crystal display having dynamic backlighting

  • US 20090256790A1
  • Filed: 04/09/2009
  • Published: 10/15/2009
  • Est. Priority Date: 04/09/2008
  • Status: Abandoned Application
First Claim
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1. A liquid crystal display (LCD), comprising:

  • a liquid crystal panel configured for displaying images with a plurality of gray levels;

    a light guide plate, comprising a plurality of light emitting areas; and

    a plurality of light sources positioned for providing light to areas of the light guide plate corresponding to the light emitting areas, respectively;

    wherein when an area of the liquid crystal panel corresponding to one of the light emitting areas of the light guide plate displays image information wherein an average brightness of gray levels of the image information is high, the LCD is capable of adjusting the corresponding light source to provide light with high brightness, and when an area of the liquid crystal panel corresponding to one of the light emitting areas of the light guide plate displays image information wherein an average brightness of gray levels of the image information is low, the LCD is capable of adjusting the corresponding light source to provide light with low brightness.

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