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

Claim 8:
9. A data driving circuit, comprising:
a shift register configured to convert digital image data received in a serial form into image data in a parallel form and output the image data;
a latch circuit configured to transfer the image data in the parallel form, on a per-line basis, to be simultaneously supplied to a plurality of source driving integrated circuits;
a gamma circuit configured to generate a plurality of gamma reference voltages using a gamma driving power transferred through a gamma driving power line from a power management circuit;
a digital-to-analog converter configured to convert the image data in the parallel form into an analog data voltage in response to the plurality of gamma reference voltages transferred from the gamma circuit;
an output buffer configured to supply the analog data voltage to a display panel through a plurality of data lines;
a gamma driving power detection circuit configured to detect a variation of the gamma driving power through the gamma driving power line and output a measurement of the gamma driving power, and
a plurality of source driving integrated circuits,
wherein the analog data voltage is changed based on a source driving integrated circuit with a largest variation in the gamma driving power among the plurality of source driving integrated circuits.