Driving apparatus for a display panel having a plurality of pixels includes a plurality of gate line sets connected to the pixels and transmitting a gate-on voltage to the pixels, a plurality of data lines connected to the pixels and transmitting a normal data voltage and an impulsive data voltage to the pixels, a signal controller for converting an input image data of a first gray to an output image data of a second gray and outputting the converted data, a data driver connected to the data line and applying the normal data voltage and the impulsive data voltage corresponding to the output image data to the data line, and a gate driver connected to the gate line and applying the gate-on voltage to the gate line according to a control of the signal controller. The normal data voltage is sequentially applied to a first gate line set among the plurality of gate line sets, and the impulsive data voltage is sequentially applied to a second gate line set among the plurality of gate line sets. The output image data of the second gray is determined in consideration of luminance display time of a pixel charged by the normal data voltage. Accordingly, luminance deterioration by different luminance display times for respective pixel rows connected to respective gate lines in the gate line set can be prevented.