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Apparatus and Method for Modeling the Light Field of a Local-Dimming LED Backlight for an LCD Display

  • US 20120274669A1
  • Filed: 04/26/2012
  • Published: 11/01/2012
  • Est. Priority Date: 04/27/2011
  • Status: Active Grant
First Claim
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1. An apparatus for displaying images comprising:

  • an LCD panel comprising a plurality of pixels for displaying the images;

    a backlight comprising a plurality of light sources, wherein each of the plurality of light sources is associated with one of a plurality of zones and each of the plurality of zones comprises a plurality of grid points; and

    a controller coupled to the LCD panel and the backlight configured to retrieve contour data associated with each of the plurality of light sources, wherein the contour data is associated with a 3-D contour shape comprising a plurality of facets, each facet associated with at least one of the plurality of grids, and wherein the controller is configured to determine a brightness level of at least one pixel in a first grid based on a slope value associated with a first facet associated with the first grid.

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