Patent ID: 8188955

Claim:
A source driving circuit, adapted to drive a display panel, comprising: a first output buffer comprising: a first differential input stage having a first input terminal for receiving a first input signal, and a second input terminal for receiving a second input signal, wherein a first current and a second current are generated in the first differential input stage respectively according to the first input signal and the second input signal; and a first output stage comprising: a first level adjustment circuit for receiving a first level current mirrored from the first current and a first biased voltage to provide a first level voltage; and a first self-bias providing circuit for providing a first biased voltage to the first level adjustment circuit based on a second level current mirrored from the second current; a second output stage for providing a first charge current and a first discharge current to output a first output signal based on the first level voltage; and a second output buffer comprising: a second differential input stage having a third input terminal for receiving a third input signal, and a fourth input terminal for receiving a fourth input signal; and a third output stage comprising: a second level adjustment circuit for providing a second level voltage according to the third input signal and the fourth input signal; and a second self-bias providing circuit for providing a second biased voltage to the first level adjustment circuit and the second level adjustment circuit, wherein the first self-bias providing circuit provides the first biased voltage to the second level adjustment circuit; and a fourth output stage for providing a second charge current and a second discharge current to output a second output signal based on the second level voltage.