Patent ID: 8207960

Claim:
A source driver, adapted to drive a display panel, comprising: an output buffer, having a first input terminal receiving a pixel signal, a second input terminal, and an output terminal coupled to the second input terminal and the display panel; and a first pre-charge circuit, which comprises a first transistor, having a gate receiving the pixel signal, a first source/drain coupled to the first voltage, and a second source/drain outputting the preset voltage; and a switch, having a first terminal coupled to the second source/drain of the first transistor, and a second terminal coupled to the output terminal of the output buffer, wherein the switch is conducted for the pre-charge period to deliver the preset voltage to the output terminal of the output buffer, charging the output terminal of the output buffer to a preset voltage associated with the pixel signal for a pre-charge period, wherein the output buffer is inactivated during the pre-charge period and the output buffer is activated for a preset period after the pre-charge period.