Patent ID: 7696976

Claim:
A data driver comprising: a shift register configured to receive a start pulse and to sequentially generate at least one output signal in synchronization with a clock signal; a plurality of sampling latches configured to receive a digital image signal and to sample the received digital image signal; a plurality of holding latches configured to receive and to store the sampled digital image signal; a digital/analog converter configured to receive the stored digital image signal from the plurality of holding latches and to convert the stored digital image signal into an analog data signal; and a sampling voltage supplying unit configured to receive the output signal and the inverted output signal of the shift register, to generate a sampling voltage, and to supply the sampling voltage to each of the plurality of sampling latches, wherein the sampling voltage supplying unit comprises: a first switching unit configured to receive the output signal and the inverted output signal of the shift register and to generate a plurality of positive voltages; and a second switching unit configured to receive the output signal and the inverted output signal of the shift register and to generate a plurality of negative voltages.