Patent ID: 8552947

Claim:
A driving device for driving a liquid crystal display device, the liquid crystal display device including a pixel that includes a first sub-pixel and a second sub-pixel, the driving device comprising: a converter converting input image data for the pixel into first sub-image data for the first sub-pixel and second sub-image data for the second sub-pixel; a memory unit coupled to the converter and comprising: a first data memory storing first present sub-image data, which is first sub-image data of a present frame, and outputting first previous sub-image data, which is first sub-image data of a previous frame; and a second data memory storing second present sub-image data, which is second sub-image data of a present frame, and outputting second previous sub-image data, which is second sub-image data of a previous frame; a compensator unit coupled to the memory unit and compensating the first and second present sub-image data based on the first and second previous sub-image data and the first and second present sub-image data to generate first and second compensated sub-image data, the compensator unit comprising: a first compensator part compares a first reference value with a differential value between the first sub-image data and the first previous sub-image data and outputs the first compensated sub-image data based on a result of the comparison, and a second compensator part compares a second reference value with a differential value between the second sub-image data and the second previous sub-image data and outputs the second compensated sub-image data based on a result of the comparison; and an output circuit that controls at least one of an output time of the first compensated sub-image data and an output time of the second compensated sub-image data, wherein the first reference value is different from the second reference value.