Patent ID: 8866729
Filing Date: 2014-10-21
Classification: G09G

Abstract:
1. A method for driving a light source unit for a liquid crystal display panel, comprising the steps of: (a) calculating average and maximum values of image signals applied to the liquid crystal panel; (b) calculating a representative value of the image signals from the average and maximum values of the image signals; and (c) determining a luminance of the light source unit based on the representative value of the image signals and driving the light source unit accordingly, wherein the liquid crystal panel comprises a plurality of regions, the average and maximum values of the image signals are calculated for each region, the representative value of the image signals is calculated for each region from wherein L wherein the value of 13 is calculated from wherein β min and β max are predetermined values for β, and α is a constant parameter for each region with a value between 0 and 1, and wherein the value of α decreases as a difference between the maximum value of the image signals for each region and the average value of the image signals for each region increases.