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Control device for liquid crystal display device, liquid crystal display device, method for controlling liquid crystal display device, program, and storage medium for program

  • US 9,105,243 B2
  • Filed: 03/12/2009
  • Issued: 08/11/2015
  • Est. Priority Date: 06/27/2008
  • Status: Expired due to Fees
First Claim
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1. A control device for controlling operations of a liquid crystal display device which includes a liquid crystal display panel and a backlight unit having a plurality of light sources arranged in a matrix manner in a backside of the liquid crystal display panel,said control device comprising:

  • a liquid crystal control section which controls pixels of the liquid crystal display panel in accordance with plural pieces of divided image data, the plural pieces of divided image data being prepared by dividing image data for a single screen into pieces for respective ones of a plurality of display areas of the liquid crystal display panel;

    a backlight control section which controls light-emitting states of respective ones of the plurality of light sources in accordance with undivided image data for a single screen;

    a first dividing section which divides inputted image data for a single screen into the plural pieces of divided image data, the inputted image data having a first resolution which is at least a threshold resolution; and

    a down-converting section which converts the first resolution of the inputted image data into a second resolution lower than the first resolution, the backlight control section including,a light source luminance setting section which determines light-emitting luminances of the respective ones of the plurality of light sources in accordance with the undivided image data for the single screen;

    a light source driving section which causes the plurality of light sources to emit light in accordance with the respective light-emitting luminances determined by the light source luminance setting section; and

    a luminance distribution data generating section which generates luminance distribution data indicative of luminance distribution caused in the liquid crystal display panel due to light emitted by the plurality of light sources, the plurality of light sources emitting the light according to the respective light-emitting luminances determined by the light source luminance setting section, the liquid crystal control section including,a compensating section which compensates the plural pieces of divided image data in accordance with the luminance distribution data; and

    a liquid crystal driving section which drives the pixels of the liquid crystal display panel in accordance with the plural pieces of divided image data compensated by the compensating section,the light source luminance setting section being configured to determine the light-emitting luminances of the respective ones of the plurality of light sources in accordance with the second resolution of the inputted image data, andin accordance with the luminance distribution data, the compensating section being configured to compensate the plural pieces of divided image data prepared by the first dividing section.

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