Output amplifier of a source driver with an amplifier circuit having an inverted and non-inverted output

An output amplifier of a source driver driving a pixel circuit of a panel, the output amplifier comprising:

• an amplifier circuit comprising an inverting terminal for providing a inverted signal, and an non-inverting terminal for providing a non-inverted signal, wherein the amplifier circuit amplifies an input pixel signal to generate the inverted signal and the non-inverted signal;
• an output stage circuit comprising a first output terminal for passing a supply voltage or a ground voltage to the pixel circuit according to the inverted signal and the non-inverted signal;
• a driving stage circuit comprising a second output terminal to drive the pixel circuit, wherein the driving stage circuit passes the supply voltage or the ground voltage to the pixel circuit;
• a high impedance control switch, electrically connected between the first output terminal and the second output terminal, passing or blocking the input pixel signal according to a high impedance signal, wherein the high impedance signal represents the period where the pixel circuit is in a high impendence state;
• a first unity gain buffer, electrically connected to the driving stage circuit, for passing the inverted signal generated by the amplifier circuit to the driving stage circuit;
• and
• a second unity gain buffer, electrically connected to the driving stage circuit, for passing the non-inverted signal generated by the amplifier circuit to the driving stage circuit,
• wherein the first unity gain buffer and the second unity gain buffer enhance the driving ability to drive the driving stage circuit.