Patent ID: 8026884

Claim:
A method for driving a liquid crystal display, the liquid crystal display including a plurality of pixels, each pixel being capable of displaying a plurality of gray levels, a first predetermined gray level signal determining a corresponding gray level for one of the plurality of pixels in a previous frame, a current frame following immediately after the previous frame, and a second predetermined gray level signal determining a corresponding gray level for the one of the plurality of pixels in the current frame, the method comprising: comparing the gray level associated with the second predetermined gray level signal to the gray level associated with the first predetermined gray level signal; applying a hold-type voltage to drive the pixel in the current frame if the gray level associated with the second predetermined gray level signal and the gray level associated with the first predetermined gray level signal are substantially the same; and applying an impulse-type voltage to drive the one of the plurality of pixels in the current frame if the gray level associated with the second predetermined gray level signal and the gray level associated with the first predetermined gray level signal are different, wherein the impulse-type voltage includes four impulse signals, and the four impulse signals are input in sequence to the pixel during the current frame.