Patent ID: 6967649

Claim:
A method for reducing power consumption of an LCD panel in a standby mode, the LCD panel comprising a plurality of pixel drivers, each pixel driver comprising: a liquid crystal capacitor; a storage capacitor connected to the liquid crystal capacitor through a third switch; a first switch connected between the storage capacitor and a data line, the storage capacitor receiving data from the data line when the first switch is turned on; a comparator connected to the storage capacitor through a second switch for receiving the data from the storage capacitor when the second switch is turned on; and a selection circuit having an input end connected to the output end of the comparator, the output end of the selection circuit connected to the liquid crystal capacitor through a fourth switch; the method comprising the following steps: (a) turning on the first switch and the third switch, and turning off the second switch and the fourth switch to transmit the data from the data line to the liquid crystal capacitor and the storage capacitor; and (b) turning off the first switch and the third switch, and turning on the second switch and the fourth switch to input a voltage stored in the storage capacitor to the comparator, the comparator comparing the voltage with a reference voltage and outputting a control signal to the selection circuit, the selection circuit outputting a corresponding display signal to the liquid crystal capacitor according to the control signal.