Patent ID: 8416172

Claim:
A liquid crystal display comprising: a first substrate assembly comprising a plurality of common electrodes parallel to each other along a same direction thereby defining a plurality of odd-numbered common electrodes and a plurality of even-numbered common electrodes, wherein one end of each odd-numbered common electrode is directly connected to a first common bus line, and one end of each even-numbered common electrode is connected to a second common bus line; a second substrate assembly parallel to the first substrate assembly, the second substrate assembly comprising: a plurality of scanning lines that are parallel to each other; a plurality of signal lines that are parallel to each other and cross the scanning lines thereby defining a plurality of pixel units, each pixel unit comprising a liquid crystal capacitor and a storage capacitor that are commonly connected to a corresponding one of the common electrodes; and a discharging circuit directly connected to the first and second common bus lines; a common voltage generating circuit for applying a first common voltage to the odd-numbered common electrodes and a second common voltage having a polarity opposite to the first common voltage to the even-numbered common electrodes; and a liquid crystal layer sandwiched between the first substrate assembly and the second substrate assembly; wherein a blank period is inserted between two continuous frames, in the two continuous frames, the common voltage generating circuit applies the first and second common voltages to the odd-numbered common electrodes and the even-numbered common electrodes respectively, and in the blank period, the common generating circuit stops outputting the first and second common voltages, and the discharge circuit starts to work during the blank period and makes the first common bus line electrically connect with the second bus line so as to short the first common bus line and the second common bus line, so that charges in the storage capacitors and the liquid crystal capacitors connected with the odd-numbered common electrodes are neutralized with charges in the storage capacitors and the liquid crystal capacitors connected with the even-numbered common electrodes.