Patent ID: 9240144
Filing Date: 2016-01-19
CPC Classification: G09G

Claim Text:
1. A liquid crystal display comprising: a liquid crystal display panel; a backlight unit including a plurality of light sources, the backlight unit providing light to the liquid crystal display panel; a backlight driving circuit that individually drives a plurality of previously determined blocks each including the light sources based on a dimming value of each of the blocks; and a local dimming control circuit that calculates a pixel gain value compensating for a luminance reduction resulting from the dimming value of each block and corrects the pixel gain value based on a grayscale saturation level of each block, wherein the local dimming control circuit adjusts the dimming value of each block and corrects the pixel gain value, and wherein the local dimming control circuit generates an estimate value of the grayscale saturation level and adjusts the dimming value of each block based on the estimate value of the grayscale saturation level.