Patent ID: 7995051

Claim:
A driving circuit comprising: a plurality of pixel electrodes that are arranged in a matrix and are configured for receiving voltage signals via corresponding switching elements connected thereto, each switching element comprising an input electrode; a plurality of common electrodes that respectively face toward the pixel electrodes and are configured for receiving common voltage signals; a plurality of comparators, each selectively connected to a respective one of the pixel electrodes and a corresponding input electrode to obtain a corresponding voltage deviation value between the voltage signal of the pixel electrode and the voltage signal of the corresponding input electrode, thereby the plurality of comparators outputting the plurality of the voltage deviation values at one frame; a logic circuit averaging the voltage deviation values output by the comparators and reversing a polarity sign of the average voltage deviation value to thereby obtain a common compensating voltage; and a common voltage generator configured for regulating and generating a common voltage signal according to the common compensating voltage, and outputting to the common voltage signal to the common electrodes.