A method for reducing power consumption of an LCD panel in a standby mode. The LCD panel includes a plurality of pixel drivers and a plurality of data drivers. Each pixel driver has a liquid crystal capacitor, a storage capacitor, a selection circuit, and four switches. Each data driver has a shift register, a comparator, and several switches. The method includes transmitting data from a signal line to the comparator and comparing the data with a reference voltage, then transmitting a corresponding control signal outputted from the comparator to the selection circuit via the data line, the selection circuit outputting a corresponding display signal to the liquid crystal capacitor according to the control signal.