Patent ID: 9159284
Filing Date: 2015-10-13
Classification: G09G

Abstract:
1. A liquid crystal display device, comprising: a liquid crystal panel configured to display an image, the liquid crystal panel including a plurality of signal lines; a liquid crystal panel driving unit configured to provide a driving voltage to the plurality of signal lines; an image data judging unit configured to judge whether input image data is still image data or moving picture data; an image data correcting unit comprising a first frame memory configured to store current frame data of the moving picture data and a second frame memory configured to store previous frame data of the moving picture data, the image data correcting unit configured to correct moving picture data by using an overdriving data and a replace data and output corrected moving picture data to the liquid crystal panel driving unit, and wherein the current frame data is displayed after the previous frame data; a plurality of light sources configured to provide light to the liquid crystal panel; and a light source driving unit configured to detect a display region having a motion value larger than a reference value from among an image of which frame data is displayed, based on a comparison of the current frame data of the moving picture data with the previous frame data of the moving picture data, wherein the image data correcting unit is further configured to output the overdriving data and the replace data based on the current frame data and the previous frame data, wherein the previous frame data is replaced with the replace data, wherein a number of frames per second of the moving picture data provided to the first and second frame memories is a half of a number of frames per second of the moving picture data output from the first and second frame memories, wherein the current frame data stored in the first frame memory is output after a delay of half a time during one a frame of the current frame data input to the first frame memory, and wherein the light source driving unit is further configured to respectively control a part of the plurality of light sources corresponding to the detected display region and a remaining part of the plurality of light sources, based on the detected display region.