Patent ID: 7683872
Filing Date: 2010-03-23
Classification: G09G

Abstract:
1. A display driving apparatus, suitable for driving a liquid crystal display panel comprising M scan lines, wherein M is a positive integer and each of the scan lines corresponds to a plurality of sub-pixels, the display driving apparatus comprising: a gate driver, for sequentially turning on the scan lines; a source driver, outputting a plurality of sub-pixel driving signals for driving the sub-pixels, wherein each of the sub-pixel driving signals is either of a first polarity or a second polarity; a latch signal unit, electrically connected to the source driver, for controlling the source driver to determine the charging time for the sub-pixels of each of the scan lines; wherein, the period that every N scan lines are sequentially turned on by the gate driver is an N-line period, and every time after an N-line period, the source driver inverts the polarity of each of the sub-pixel driving signals, wherein N is a positive integer and 2<N≦M; in each of the N-line periods, a first turn-on time of the first scan line is not equal to a second turn-on time of the second scan line, wherein the first turn-on time or the second turn-on time is controlled by a plurality of latch signals output by the latch signal unit; and a gate enabling unit, electrically connected to the gate driver, for controlling the gate driver to determine the turn-on time of each of the scan lines, wherein the gate enabling unit comprises: an enable generating circuit, for outputting a plurality of enabling signals respectively; a multiplexer, electrically connected to the enable generating circuit, for receiving the enabling signals; a horizontal line counter, electrically connected to the multiplexer, for outputting a horizontal line count signal according to the turn-on timing of the scan lines; and a frame counter, electrically connected to the multiplexer, for outputting a frame count signal according to the turn-on timing of the scan lines; wherein, the multiplexer sequentially outputs the enabling signals according to the horizontal line count signal and the frame count signal, for controlling the gate driver to determine the turn-on time of each of the scan lines.