Patent ID: 9496834
Filing Date: 2016-11-15
CPC Classification: G09G,H03F

Claim Text:
1. A display driver that outputs a plurality of output display signals, comprising: a gray-scale voltage generating circuit that generates gray-scale voltages based on an input signal; and a plurality of operational amplifiers that outputs the plurality of output display signals based on the gray-scale voltages, each of the operational amplifiers comprising: a P-channel differential amplifier including a first slew-rate control capacitor and a first switch; an N-channel differential amplifier including a second slew-rate control capacitor and a second switch; and an output circuit including: an output amplifier configured to receive and amplify an initial display signal to provide a respective of the output display signals; and a first phase compensation capacitor and a second phase compensation capacitor configured to store a first charge and second charge of the initial display signal, respectively, and configured to delay a phase of the initial display signal, wherein the first switch is configured to transfer the first charge stored in the first phase compensation capacitor to the first slew-rate control capacitor, and wherein the second switch is configured to transfer the second charge stored in the second phase compensation capacitor to the second slew-rate control capacitor.