Patent ID: 8717349

Claim:
A source driver, adapted to drive a display panel, comprising: a first output buffer, receiving a first pixel signal via an input terminal thereof for enhancing the first pixel signal and thereby outputting a first enhanced pixel signal to the display panel via an output terminal thereof; a detection module, coupled to the output terminal the first output buffer for detecting a rise time of the first enhanced pixel signal, wherein the rise time is a time interval between a first preset voltage and a second preset voltage that the first enhanced pixel signal reached; and a conversion module, coupled between the first output buffer and the detection module for adjusting a driving capability of the first output buffer in response to the rise time so as to adjust a slew rate of the first output buffer, wherein the detection module comprises: a first comparator, comparing a voltage of the first enhanced pixel signal with the first preset voltage and thereby outputting a first indication signal; a second comparator, comparing the voltage of the first enhanced pixel signal with the second preset voltage and thereby outputting a second indication signal; and a bias circuit, providing the first preset voltage and the second preset voltage to the first comparator and the second comparator.