Patent ID: 8400394
Filing Date: 2013-03-19
Classification: G09G

Abstract:
1. A backlight unit assembly comprising: a light emitting diode assembly including a plurality of light emitting diode blocks; and a backlight unit driving unit for dividing an image signal into a plurality of blocks, classifying each block into one of a plurality of grayscale classes based on grayscale values of each said block, calculating a whole grayscale average from the image signal and a plurality of individual grayscale averages from each block of the image signal, selecting one of a plurality of lookup tables, each said lookup table having luminance data for adjusting luminance of a light emitting diode block corresponding to one of the grayscale classes in accordance with the whole grayscale average, and adjusting luminance of the light emitting diode blocks in accordance with the luminance data in the selected lookup table, wherein the backlight unit driving unit comprises: