DATA DRIVER

摘要

A data driver includes two data processing circuits for respectively providing positive and negative pixel voltages according to first and second pixel data, and a multiplexer circuit including multiplexer units. Each multiplexer unit has first and second input terminals respectively receiving the positive and negative pixel voltages, and an output terminal coupled to a data line. A first switching device has first and second switches serially coupled between the first input and output terminals. A node between the first and second switches is selectively grounded via a third switch. A second switching device has fourth and fifth switches serially coupled between the second input and output terminals. A node between the fourth and fifth switches is selectively grounded via a sixth switch. When the first and second switches turn on, the sixth switch turns on. When the fourth and fifth switches turn on, the third switch turns on.

主权项

1. A data driver for driving a display panel, the data driver comprising:
a first data processing circuit and a second data processing circuit respectively providing a positive pixel voltage and a negative pixel voltage; and a multiplexer circuit comprising:
a first input terminal, coupled to the positive pixel voltage;a second input terminal, coupled to the negative pixel voltage;a first output terminal;a second output terminal; anda plurality of multiplexer units, wherein each of the multiplexer units coupled to the first and second input terminals and a respective one of the first and second output terminals and comprises:
a first switching device, comprising:
a first switch, coupled to the first input terminal;a second switch, coupled between the first switch and the respective one of the first and second output terminals; anda third switch, coupled between a reference voltage level and a node between the first switch and the second switch; anda second switching device, comprising:
a fourth switch, coupled to the second input terminal;a fifth switch, coupled between the fourth switch and the respective one of the first and second output terminals; anda sixth switch, coupled between the reference voltage level and a node between the fourth switch and the fifth switch; anda body voltage switching circuit, providing a first body voltage to the second switch and the fifth switch, and providing a second body voltage to the second switch and the fifth switch.