Sensing circuit, display device and method of operating a sensing circuit

A display device comprising:

• a display panel including a plurality of pixels;
• a scan driver which provides a scan signal and a sensing signal to a corresponding pixel of the plurality of pixels;
• a data driver which provides a data signal to the corresponding pixel of the plurality of pixels;
• a sensing circuit coupled to the plurality of pixels through a plurality of sensing lines, the sensing circuit configured to:
• couple a first sensing line of the plurality of sensing lines to a sensing channel in a first sub-sensing period of a sensing period;
• sample a first sensing voltage of the first sensing line in a first sampling period of the first sub-sensing period;
• couple a second sensing line of the plurality of sensing lines to the sensing channel in a second sub-sensing period of the sensing period;
• and
• sample a second sensing voltage of the second sensing line in a second sampling period of the second sub-sensing period;
• and
• a controller which controls the scan driver, the data driver and the sensing circuit,
• wherein the second sampling period is shorter than the first sampling period.

A method of operating a sensing circuit of a display device, the method comprising:

• coupling a first sensing line to a sensing channel in a first sub-sensing period of a sensing period;
• sampling a first sensing voltage of the first sensing line by the sensing channel in a first sampling period of the first sub-sensing period;
• coupling a second sensing line to the sensing channel in a second sub-sensing period of the sensing period;
• and
• sampling a second sensing voltage of the second sensing line by the sensing channel in a second sampling period of the second sub-sensing period,
• wherein the second sampling period is shorter than the first sampling period.