Patent ID: 7852308

Claim:
A source driver comprising: an input signal circuit receiving a first toggling signal CHOP and a second toggling signal CHOPB that are complimentary to one another, and an input signal distinct from the toggling signals, the input signal circuit alternately toggling a first differential input signal DiffA and a second differential input signal DiffB in accordance with the first toggling signal CHOP and the second toggling signal CHOPB and outputting the first and second toggled differential input signals; an output buffer inputting the alternately toggled first and second differential input signals, generating a data-line driver signal in response to the alternately toggled first and second differential input signals, and feeding the data-line driver signal as input to the input signal circuit; and a controller generating the toggling signals CHOP and CHOPB that toggle at a predetermined frame period, wherein the period of each of the toggling signals CHOP and CHOPB corresponds to four frames of the data-line driver signal, wherein the input signal circuit is configured to output one of: the first differential input signal DiffA to correspond to the input signal and the second differential input signal DiffB to correspond to the feedback data-line driver signal, or the first differential input signal DiffA to correspond to the feedback data-line driver signal and the second differential input signal DiffB to correspond to the input signal, based on the toggling signals CHOP and CHOPB.