Patent ID: 8228276

Claim:
A display driver apparatus, suitable for driving a liquid crystal display panel, wherein the liquid crystal display panel comprises a plurality of source lines and a plurality of sub-pixels, the display driver apparatus comprising: a gate drive unit, coupled to the liquid crystal display panel and used to generate a gate signal for turning on/off the sub-pixels, wherein the sub-pixels are turned on during a enable period of the gate signal; a source drive unit, together with the gate signal, used for generating a source signal for the display panel; a multiplexer unit, with an input terminal being coupled to the source drive unit to receive the source signal, with a plurality of output terminals being respectively coupled to the source lines one by one, wherein the multiplexer unit is used to couple the input terminal to one of the output terminals in turn during the enable period of the gate signal; a common voltage generation unit, used for generating a common voltage to the liquid crystal display panel, wherein the common voltage generation unit switches the level of the common voltage within the enable period of the gate signal, wherein the level of the common voltage comprises a first voltage level and a second voltage level, when the level of the common voltage is the first voltage level, the corresponding source signal is of a first drive polarity, and when the level of the common voltage is the second voltage level, the corresponding source signal is of a second drive polarity; and a timing generator, coupled to the multiplexer unit and used for outputting M switch signals SWi according to a preset sequence, wherein the switch signal SWi is used to determine the connection state between an input terminal and an i th output terminal of the multiplexer unit, SWi represents the i th switch signal, M is an integer larger than 0, and is an integer and 1≦i≦M.