Source driver, display apparatus and driving method of display apparatus

A source driver converting a digital signal corresponding to an image into a grayscale signal which is an analog signal and providing the grayscale signal to a plurality of pixels, the source driver comprising:

• a coarse driving amplifier providing the grayscale signal to a load connected to the source driver for coarse driving;
• a fine driving amplifier providing the grayscale signal to a load connected to the source driver for fine driving;
• and
• a multiplexer (MUX) multiplexing outputs of the coarse driving amplifier and the fine driving amplifier and outputting to the load.

A driving method of a display apparatus, the driving method comprising:

• a first step in which a source driver performs fine driving of a first channel connected to a pixel displaying a first color and performs coarse driving of a second channel displaying a second color;
• a second step in which the source driver performs fine driving of the second channel and performs coarse driving of a third channel displaying a third color;
• and
• a third step in which the source driver performs fine driving of the third channel and performs coarse driving of the first channel.