Data driver and multiplexer circuit with body voltage switching circuit

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;
• and
• a 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;
• and
• a third switch, coupled between a reference voltage level and a node between the first switch and the second switch;
• and
• a 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;
• and
• a sixth switch, coupled between the reference voltage level and a node between the fourth switch and the fifth switch;
• and
• a body voltage circuit, providing a first body voltage to both the second switch and the fifth switch, and providing a second body voltage to both the second switch and the fifth switch, wherein the body voltage circuit switches a voltage level of the first body voltage and a voltage level of the second body voltage according to a switching signal, the body voltage circuit comprises:
• a first voltage selector coupled between a first voltage and a reference voltage, for selectively outputting one of the first voltage level and the reference voltage to be the first body voltage according to the switching signal;
• and
• a second voltage selector, coupled between a second voltage and the reference voltage, for selectively outputting one of the second voltage and the reference voltage to be the second body voltage according to the switching signal.

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 first range of pixel voltage and a second range of 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;
• and
• a 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, coupled to the first input terminal and the respective one of the first and second output terminals;
• and
• a second switching device, coupled to the second input terminal and the respective one of the first and second output terminals;
• and
• a body voltage circuit, providing a first body voltage to both the first switching device and second switching device, and providing a second body voltage different from the second body voltage to both the first switching device and second switching device;
• wherein the body voltage circuit switches a voltage level of the first body voltage and a voltage level of the second body voltage according to a switching signal, the body voltage circuit comprises:
• a first voltage selector coupled between a first voltage and a reference voltage, for selectively outputting one of the first voltage level and the reference voltage to be the first body voltage according to the switching signal;
• and
• a second voltage selector, coupled between a second voltage and the reference voltage, for selectively outputting one of the second voltage and the reference voltage to be the second body voltage according to the switching signal.