Patent ID: 8803860

Claim:
A display system comprising: a display panel including a pixel, wherein the pixel includes a capacitor and a transistor; a gate driver that receives a control signal and that, based on the control signal, generates a gate signal to drive the transistor in the pixel; and a compensation unit coupled to the gate driver to compensate for a fall time of the gate driver, the compensation unit including: a replica gate driver that receives the control signal and that, based on the control signal, generates a replica gate signal, an AC coupler coupled to the replica gate driver to perform AC coupling on the replica gate signal, a peak root mean square (RMS) detector coupled to the AC coupler to calculate a peak RMS of the AC coupled replica gate signal and to output a peak RMS, a comparator coupled to the peak RMS detector to compare the peak RMS and a reference voltage and output a comparator value, and a counter controlled by the comparator value to generate a compensation value used to adjust the gate driver and the replica gate driver.