Patent ID: 8520035

Claim:
A method of driving a display panel having gate lines and data lines, where the display panel is structured for polarity inversion by way of column inversion applied to the data lines, the method comprising: outputting a row-selecting gate signal that is active over at least three horizontal scan periods to one of the gate lines of the display panel such that charges applied by a same data line for a previous, at least two rows are summed as pre-charging amounts of charge applied to a corresponding current pixel electrode of a currently-to-be set row; generating a gamma-corrected analog voltage corresponding to a received digital data signal, where the data signal represents a desired luminance output for the pixel of the current pixel electrode of the currently-to-be set row; generating a pre-charge compensating signal that represents compensation for excess dimness or excess brightness resulting from the summed pre-charging amounts of charge due to columnar transition between relatively bright grayscale values in one column and relatively dark grayscale values in and adjacent column; and outputting to a corresponding one of the data lines, an analog data voltage waveform having a grayscale voltage level portion corresponding to the gamma-corrected analog voltage and having a compensating voltage signal portion corresponding to the compensation represented by the generated pre-charge compensating signal, the compensating voltage signal portion having a magnitude different from that of the grayscale voltage level portion, where both the grayscale voltage level portion and the compensating voltage signal portion appear during one horizontal scan period, and where the display panel has a multi-pixels structure in which each data line is alternately connected when traversing along the data line, to first and second subpixel columns disposed adjacent to each other.