Patent ID: 8085230
Filing Date: 2011-12-27
Classification: G09G

Abstract:
1. A driving device for an LCD device, the driving device comprising: a converter for converting input image data having a gray scale and outputting first sub-image data having a gray scale higher than the gray scale of the input image data and second sub-image data having a gray scale lower than the gray scale of the input image data; a first memory that sequentially stores the first sub-image data supplied from the converter in one frame unit; a second memory that sequentially stores the second sub-image data supplied from the converter in one frame unit; a first compensator that receives first sub-image data of a present frame (first present sub-image data) from the converter, reads out first sub-image data of a previous frame (first previous sub-image data) from the first memory and compensates for the first present sub-image data based on a first differential value between the first previous sub-image data and the first present sub-image data to output first compensated image data, a gray scale of the first present sub-image data being higher than a gray scale of present input image data, the present input image data being converted by the converter to generate the first present sub-image data; a second compensator that receives second sub-image data of a present frame (second present sub-image data) from the converter, reads out second sub-image data of the previous frame (second previous sub-image data) from the second memory and compensates for the second present sub-image data based on a second differential value between the second previous sub-image data and the second present sub-image data to output second compensated image data, a gray scale of the second present sub-image data being lower than the gray scale of the present input image data, the present input image data being converted by the converter to generate the second present sub-image data; and an output circuit that controls an output time of the first and second compensated image data.