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Liquid crystal display device and driving method thereof

  • US 10,540,934 B2
  • Filed: 11/16/2015
  • Issued: 01/21/2020
  • Est. Priority Date: 11/16/2015
  • Status: Active Grant
First Claim
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1. A local dimming LCD device comprising:

  • a display panel comprising a plurality of pixels;

    a panel driver configured to drive each of the plurality of pixels;

    a plurality of backlights, the plurality of backlights respectively corresponding to a plurality of regions of the display panel and being configured to respectively emit light to each of the plurality of regions;

    a backlight driver configured to drive the plurality of backlights based on gray level information of the plurality of pixels corresponding to the plurality of regions; and

    a processor configured to calculate a first amount of light to be incident on each pixel based on the gray level of each pixel, to calculate a second amount of light incident on each pixel according to a driving state of the plurality of backlights, to change a gray level of at least one of the plurality of pixels based on a difference between the first amount of light and the second amount of light, and to control the panel driver based on the changed gray level.

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