Patent ID: 7924255
Filing Date: 2011-04-12
Classification: G09G

Abstract:
1. A gate driving method for a liquid crystal display, the liquid crystal display comprising a plurality of scan lines, the gate driving method for the liquid crystal display comprising: providing an independent gate driving signal to drive one of the corresponding scan lines; performing a trimming operation to the independent gate driving signal before a voltage level of the independent gate driving signal is switched from a high voltage level to a low voltage level, so that the voltage level of the independent gate driving signal declines from the high voltage level to a first voltage level which is between the high voltage level and the low voltage level of the independent gate driving signal_according to a first slope; and providing an independent correction signal to said one of the corresponding scan lines after the trimming operation is completed and before a next independent gate driving signal is provided to a next corresponding scan line, so that the voltage level of the independent gate driving signal declines from the first voltage level to a second voltage level which is between the first voltage level and the low voltage level_according to a second slope, wherein the voltage level of the independent gate driving signal declines from the second voltage level to the low voltage level according to a third slope before the next independent gate driving signal is provided to the next corresponding scan line, wherein the first slope, the second slope and the third slope are different from each other, and wherein said one of the corresponding scan lines is continuously driven by the declined gate driving signal until a gate output enable signal is provided for generating the next gate driving signal, a polarity of the independent correction signal is opposite to a polarity of the independent gate driving signal, the high voltage level is greater than the first voltage level, the first voltage level is greater than the second voltage level, the second voltage level is greater than the low voltage level, the gate driving signal is a positive voltage square wave, and the correction signal is a negative voltage square wave.