Patent ID: 7859504
Filing Date: 2010-12-28
Classification: G09G

Abstract:
1. A liquid crystal driving device for driving an active matrix type liquid crystal display panel, comprising: a scan line driving circuit driving a scan line of the liquid crystal display panel; a signal line driving circuit driving a signal line of the liquid crystal display panel; a common electrode driving circuit driving a common electrode of the liquid crystal display panel; and an image recognition circuit determining a common electrode voltage value of a voltage applied to the common electrode of the liquid crystal display panel based on input image data, wherein the input image data comprises a plurality of gray scale values corresponding to a plurality of pixels, and wherein the image recognition circuit stores a preset priority of gray scales and a plurality of voltage candidate values preset in accordance with the gray scales, determines a gray scale value having the highest priority out of the plurality of gray scale values based on the preset priority of gray scales, and determined a voltage candidate value corresponding to the gray scale value out of the plurality of gray-scale values as the common electrode voltage value.