Patent ID: 8384727

Claim:
A video display device comprising: a display panel; a memory storing atypical or typical defect information used to compensate atypical or typical defect regions of the display panel; an integrated atypical or typical compensation circuit comprising a first compensator for compensating input data to be displayed on the atypical or typical defect regions, using the atypical or typical defect information from the memory, and a second compensator for finely compensating the data compensated by the first compensator, using first and second dithering patterns, the compensation circuit supplying data to be displayed on normal regions, without compensation; a timing controller comprising a dithering unit for finely compensating data output from the integrated atypical or typical compensation circuit, using a third dithering pattern different from the first and second dithering patterns; and a panel driver for driving the display panel under a control of the timing controller, wherein the second compensator includes: a first dithering unit for executing a dithering operation for N-bit input data (“N” is a positive integer) received from the first compensator using a first dithering pattern; a second dithering unit for executing a dithering operation for the N-bit input data received from the first compensator using a second dithering pattern; and a multiplexer for selecting an output from the first dithering unit or the second dithering unit in accordance with a dithering-off or dithering-on of the timing controller, and wherein the second dithering pattern has a small size than the first dithering pattern and the third dithering pattern has a small size than the first dithering pattern and a large size than the second dithering pattern, and wherein the multiplexer selects the output from the first dithering unit when the dithering-off and selects the output from the second dithering unit when the dithering-on.