Patent ID: 7012599

Claim:
A method for reducing power consumption of an LCD panel in a standby mode, the LCD panel comprising a plurality of pixel drivers, a plurality of data drivers, and a shift register, each pixel driver comprising: a liquid crystal capacitor; a storage capacitor connected to a data line and connected to the liquid crystal capacitor through a second switch; and a selection circuit having an input end connected to the data line and an output end connected to the liquid crystal capacitor through a fourth switch; each data driver comprising: a comparator for comparing data from a video line with a reference voltage and outputting a corresponding control signal; a fifth switch connected to the video line; a sixth switch connected between the fifth switch and the data line; and a seventh switch connected between the comparator and the data line; the method comprising: (a) the shift register turning on the fifth switch and a first clock turning on the sixth switch and turning off the seventh switch to transmit data from the video line to the data line, turning on the second switch and turning off the fourth switch to transmit the data from the data line to the liquid crystal capacitor and the storage capacitor; and (b) the shift register turning on the fifth switch and the first clock turning off the sixth switch and turning on the seventh switch to transmit data from the video line to the comparator and using the comparator to compare the data with the reference voltage, then transmitting a corresponding control signal outputted from the comparator to the selection circuit through the data line, and turning on the fourth switch and turning off the second switch so that the selection circuit outputs a corresponding display signal to the liquid crystal capacitor according to the control signal.