Patent ID: 8817010

Claim:
A circuit for controlling a data driver of a display device, the circuit comprising: a bias block configured to provide a bias power to an amplifier included in the data driver, the amplifier connected to a data line and outputting a data signal to the data line according to a slew rate corresponding to the bias power; and a control unit configured to control the bias block to selectively output one of a first bias power or a second bias power, which have different magnitudes, to the data driver based on a control signal input to the control unit, wherein the bias block provides the first bias power or the second bias power to the data driver according to control of the control unit, wherein: the first bias power is supplied to the amplifier during a first period, the first period corresponds to charging or discharging of one or more pixel capacitors to an image data value based on the first bias power, and the second bias power is supplied to the amplifier during a second period different from the first period, wherein the first bias power corresponds to a first slew rate for charging or discharging the one or more pixel capacitors and the second bias corresponds to a second slew rate different from the first slew rate.