Patent ID: 8102386
Filing Date: 2012-01-24
Classification: G09G

Abstract:
1. An apparatus for driving a display device, the apparatus comprising: a signal controller which converts an input image signal of a first frame frequency into a plurality of output image signals of a second frame frequency, and outputs the plurality of output image signals; and a data driver which selects data voltages corresponding to the plurality of output image signals among one group of gray voltages and applies the data voltages to pixels, wherein the input image signal includes at least a first input image signal and a second input image signal, the plurality of output image signals includes a first output image signal corresponding to the first input image signal and a second output image signal corresponding to the second input image signal, frame frequencies of the first output image signal and the second output image signal are different from each other, and wherein the signal controller calculates an inactive pixel row number based on the second frame frequency and changes the inactive pixel row number to control the horizontal frequencies and the pixel frequencies of the first output image signal and the second output image signal, respectively, to be substantially equal to each other.