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VIDEO DISPLAY DEVICE

  • US 20150161932A1
  • Filed: 03/19/2013
  • Published: 06/11/2015
  • Est. Priority Date: 05/23/2012
  • Status: Abandoned Application
First Claim
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1. A video display device, comprising a display panel that displays a video signal, a backlight that uses an LED as a light source for illuminating the display panel, and a control portion that controls light emission luminance of the LED, the control portion dividing the backlight into a plurality of areas and controlling light emission luminance of an LED corresponding to each of the divided areas according to a video signal corresponding to each of the divided areas, whereinwhen a main screen and one or more secondary screens are displayed on the display panel, the control portion performs first luminance control for defining light emission luminance of an LED corresponding to a display area of the main screen according to a feature amount of a video indicated by the video signal displayed on a display area corresponding to each of the divided areas in the main screen and setting a part of the light emission luminance of the LED to be equal to or more than light emission luminance in the case of a video of white 100%, and independently of the first luminance control, performs second luminance control for controlling light emission luminance of an LED corresponding to a display area of the secondary screen at least other than a boundary area with the main screen to be constant.

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