Patent ID: 9721516
Date: 2017-08-01
CPC Classifications: G09G

Claim:
1. A method of driving a display panel, the method comprising: providing input image data; generating a gamma reference voltage; generating a data voltage based on the gamma reference voltage and input image data; providing the data voltage to the display panel; determining whether the input image data represents a still image or a video image; generating first and second common voltages that are different from each other; and substantially periodically and alternately providing the first and second common voltages to the display panel repeatedly every first period when the input image data represents the still image, wherein the first common voltage having a first level is provided to the display panel during a first duration, wherein the second common voltage having a second level different from the first level is provided to the display panel during a second duration, wherein the first duration and the second duration are continuous, and wherein the first and second common voltages have the shape of a square wave in the first period.