Patent ID: 8531374
Filing Date: 2013-09-10
Classification: G09G

Abstract:
1. A compensation circuitry of gate driving pulse signal, adapted to receive a gate driving pulse signal generated from a gate driving circuit in a frequency period and comprising: a pre-processing circuit for performing a pre-processing operation to the gate driving pulse signal to adjust a voltage of the gate driving pulse signal; a peak detector electrically coupled to receive the pre-processed gate driving pulse signal and performing a charging operation to obtain a peak voltage of the pre-processed gate driving pulse signal; a discharge circuit electrically coupled to receive the pre-processed gate driving pulse signal and provide a discharge loop to the peak detector; a voltage buffer including an input terminal electrically coupled to the peak detector to receive the peak voltage; and a charge pump circuit for acquiring the peak voltage from an output terminal of the voltage buffer and modulating a waveform of the gate driving pulse signal according to the peak voltage, and thereby a voltage difference between the highest-level voltage and the lowest-level voltage of the gate driving pulse signal is kept to be substantially constant in each the frequency period.