Patent ID: 8289307

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; a first pre-charge circuit, pre-charging a first terminal of the display panel to a first preset voltage or a second preset voltage for a pre-charge period according to a polarity of a common voltage coupled to the display panel, wherein the second preset voltage is smaller than the first preset voltage, the output buffer is inactivated during the pre-charge period, and is activated for a preset period after the pre-charge period; a common voltage generating circuit, generating the common voltage to a second terminal of the display panel after the preset period; and a second pre-charge circuit, pre-charging the second terminal of the display panel to the first preset voltage or to the second preset voltage during the pre-charge period according to the polarity of the common voltage.