Patent ID: 7764294

Claim:
An apparatus for driving a display device having a plurality of pixels, the apparatus comprising: a signal controller that receives an input image data and that outputs output image data; and a data driver for converting the output image data from the signal controller into data voltages and applying the data voltages to the pixels, wherein the signal controller comprises a color correction unit, an image data correction unit and a dynamic capacitance compensation unit, wherein the color correction unit corrects the input image data such that input image data color temperature has a predetermined characteristic depending upon an increase or decrease in the gray level, wherein the image data correction unit converts first output data from the color correction unit into first image data and second image data having a gray level lower than a gray level of the first image data, wherein the dynamic capacitance compensation unit corrects second output data from the image data correction unit depending upon a magnitude of a difference between second output data of a present frame and second output data of a previous frame, and wherein the mean value of front gammas of the first image data and the second image data corresponds to a front gamma with respect to the input image data.