Source amplifier and source driver including source amplifier

A source amplifier comprising:

• a first differential transistor pair of first conductivity type that is configured to operate based on an input signal and an output signal having a complementary relationship with the input signal, and that is connected to a first node and a second node;
• a second differential transistor pair of second conductivity type that is configured to operate based on the input signal and the output signal, and that is connected to a third node and a fourth node;
• a first current mirror connected between a first set of the first node and the second node and a first power source voltage line;
• a first bias circuit connected between the first set of the first node and the second node and a second set of a fifth node and a sixth node;
• a second current mirror connected between a third set of the third and the fourth node and a second power source voltage line;
• a second bias circuit connected between the third set of the third and the fourth node and a fourth set of a seventh node and an eighth node;
• an output buffer configured to buffer an amplified voltage based on a sixth voltage of the sixth node and an eighth voltage of the eighth node to an output terminal;
• a first capacitor connected between the output terminal and the second node;
• a second capacitor connected between the output terminal and the fourth node;
• a third capacitor connected to the second node and corresponding to the first capacitor;
• and
• a fourth capacitor connected to the fourth node and corresponding to the second capacitor.

A source driver comprising:

• a gamma voltage generator comprising a plurality of gamma lines configured to provide a plurality of gamma voltages;
• a decoder configured to select the plurality of gamma lines based on an image data;
• and
• a first source amplifier comprising:
• a first input circuit configured to:
• receive a first input signal provided through the decoder and a first input terminal and a first output signal having a complementary relationship with the first input signal, and
• output a first intermediate signal and a second intermediate signal to a first intermediate node and a second intermediate node, respectively, based on the first input signal and the first output signal,
• a first amplifier configured to output a third intermediate signal and a fourth intermediate signal by amplifying the first intermediate signal and the second intermediate signal, respectively,
• a first output circuit configured to output the first output signal, which is a first data voltage, to a first output terminal based on the third intermediate signal and the fourth intermediate signal,
• a first compensator comprising:
• a first capacitor connected between the first output terminal and the first intermediate node, and
• a second capacitor connected between the first output terminal and the second intermediate node, and
• a first feed-forward circuit comprising:
• a third capacitor connected to the first intermediate node and corresponding to the first capacitor, and
• a fourth capacitor connected to the second intermediate node and corresponding to the second capacitor.