Patent ID: 8681088
Filing Date: 2014-03-25
Classification: G09G,H05B

Abstract:
1. A display device, comprising: a display panel comprising a plurality of display regions for sequentially displaying a plurality of images, wherein each of the display regions includes a plurality of pixels, and wherein each of the pixels displays one of a plurality of gray levels; a light source assembly including a plurality of light source blocks respectively corresponding to the plurality of display regions, the light source assembly configured to dim the plurality of light source blocks according to dimming control signals based on a current image, wherein the dimming control signals comprise a first dimming control signal and a second dimming control signal; and a dimming control unit configured to calculate an average gray level for the plurality of pixels in each of the display regions with respect to the current image, an inherent brightness value of each of the display regions based upon the average gray level, and a threshold gray level of each of the display regions based upon the inherent brightness value, to separate the plurality of gray levels into a first gray level section and a second gray level section based on the threshold gray level, and to output the first dimming control signal to a first light source block of the plurality of light source blocks when the average gray level is within the first gray level section or to output the second dimming control signal to the first light source block when the average gray level is within the second gray level section, wherein the first dimming control signal enables the first light source block to emit light having a fixed brightness, and the second dimming control signal enables the first light source block to emit light having a variable brightness which varies according to the inherent brightness value.