Patent ID: 7911435

Claim:
A source driver for driving a display panel, the source driver comprising: a sample/hold circuit with two inputs for receiving a first voltage and a second voltage and two outputs for outputting a first sampled-held voltage and a second sampled-held voltage; a first multiplexer with two inputs respectively connected to the outputs of the sample/hold circuit, and having two outputs for respectively outputting the first sampled-held voltage and the second sampled-held voltage selectively according to a polarity signal; a first low voltage amplifier connected to one output of the first multiplexer to output a low pixel voltage; a high voltage amplifier device connected to the other output of the first multiplexer to output a high pixel voltage; and a second multiplexer for respectively outputting the low pixel voltage and the high pixel voltage to two data lines of the display panel according to the polarity signal; wherein when the polarity signal is a first value, the first multiplexer is configured to output the first sampled-held voltage to the first low voltage amplifier and to output the second sampled-held voltage to the high voltage amplifier device; and wherein when the polarity signal is a second value, the first multiplexer is configured to output the first sampled-held voltage to the high voltage amplifier device and to output the second sampled-held voltage to the first low voltage amplifier.