Patent ID: 7154464

Claim:
A device for driving a liquid crystal display including a plurality of gate lines provided with gate-on pulses, a plurality of data lines provided with data signals and a plurality of pixels which have switching elements connected to the gate lines and the data lines, disposed on areas defined by the gate lines and the data lines, and arranged in a matrix, the device comprising: a timing controller outputting color signals for image display, data control signals and gate control signals, the gate control signals including a first control signal having a plurality of pulses having different widths which varies depending on polarity change of the data signals, the polarity change of the data signals being in turn performed every at least two rows of the matrix; a gate driver sequentially applying to the gate lines the gate-on pulses for selectively turning on the switching elements based on to gate control signals; and a data driver sequentially applying the data signals corresponding to the color signals to the data lines while inverting polarity of the data signals based on the data control signals.