METHOD AND SOURCE DRIVER FOR DRIVING LIQUID CRYSTAL DISPLAY

摘要

In one aspect of the invention, a source driver for driving a display panel to display an image data in an adaptive column inversion includes a data processing unit having a logic circuit adapted for determining N most-significant bits (MSBs) of image data signals of two neighboring data lines, such that when all of the N MSBs are equal to 1 or 0, the output of the logic circuit is 1, otherwise, the output of the logic circuit is 0, and a MUX coupled to the data processing unit and adapted for receiving a frame polarity control signal, FramePOL, and a pixel polarity control signal, XPOL, and selectively outputting the frame polarity control signal FramePOL when the output of the logic circuit is 1, or the pixel polarity control signal POL when the output of the logic circuit is 0, as a polarity control signal, POL.

主权项

1. A method for driving a display panel to display an image data in an adaptive column inversion, wherein the display panel comprises a plurality of pixels spatially arranged in a matrix form and a plurality of data lines, each data line being associated with pixels of a corresponding pixel column, comprising the steps of:
(a) inputting an image data to be displayed, wherein the image data is decomposed into a number of frames, and wherein each frame of the image data is mapped onto the pixel matrix with grey levels such that a grey level associated with a pixel is corresponding to the shade of grey of the frame to be displayed at the pixel; (b) determining N most-significant bits (MSBs) of image data signals mapped onto two neighboring data lines, N being a positive integer; (c) selecting a frame polarity control signal, FramePOL, when all of the N MSBs of the image data signals mapped onto the two neighboring data lines is equal to 1 or 0, or a pixel polarity control signal, XPOL, when the N MSBs comprise 1 and 0, as a polarity control signal, POL; and (d) driving pixels of the pixel matrix with a column inversion when the frame polarity control signal FramePOL is selected and the other pixels of the pixel matrix with one of a dot inversion and a 2-line inversion when the pixel polarity control signal XPOL is selected, so as to display each frame of the image data.