Patent ID: 11922888
Assignee: LG DISPLAY CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 14:
15. A method for driving a display device, the display device including a display panel where a plurality of gate lines, a plurality of data lines, and a plurality of subpixels are disposed, a gate driving circuit supplying a scan signal to the plurality of gate lines, and a data driving circuit converting digital image data into an analog data voltage and supplying the analog data voltage to the plurality of data lines, the method comprising:
detecting a variation of a gamma driving power supplied to the data driving circuit in a power management circuit;
generating a measurement of the gamma driving power in the power management circuit;
comparing the measurement of the gamma driving power with a reference value in a timing controller;
controlling the analog data voltage when the measurement of the gamma driving power exceeds the reference value in the timing controller; and
supplying the analog data voltage to the display panel in the data driving circuit,
wherein, when the data driving circuit includes a plurality of source driving integrated circuits, the analog data voltage is controlled based on a source driving integrated circuit with a largest variation in the gamma driving power among the plurality of source driving integrated circuits.