Patent ID: 11972714
Assignee: LG DISPLAY CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 8:
9. A method for driving a display device including a display panel configured to display an image, a data driver configured to supply a data voltage to the display panel and having a precharge circuit configured to perform a precharging operation, and a timing controller configured to control the data driver, the method comprising:
during charge sharing between data lines of the display device, generating a current precharge signal for generating a precharge voltage based on an average value of current line data signals and an average value of previous line data signals;
generating a precharge selection signal for determining whether to output the precharge voltage based on an average value of absolute values obtained by subtracting the current line data signals from the previous line data signals and an average value of absolute values obtained by subtracting the current line data signals from previous precharge signals; and
outputting the precharge voltage through output channels of the data driver based on the current precharge signal and the precharge selection signal during the charge sharing,
wherein a level of the precharge voltage is varied in response to the current precharge signal.