Display device and display device driving method thereof

A display device driving method, applicable to a display device, wherein the display device comprises a plurality of pixel circuits, a source driving circuit, and a reading circuit, the plurality of pixel circuits is coupled with a first node point, and the source driving circuit is configured to provide a data signal, the display device driving method comprising:

• selectively coupling the first node point with the source driving circuit or the reading circuit;
• during a writing stage, supplying a plurality of first control signals to the plurality of pixel circuits, respectively, wherein the plurality of first control signals sequentially provide a first impulse so that the plurality of pixel circuits sequentially receive the data signal from the first node point;
• during a reading stage, supplying a plurality of second control signals to a plurality of optical sensing circuits, respectively, wherein the plurality of second control signals sequentially provide a second impulse so that the plurality of optical sensing circuits sequentially output a sensing signal to the first node point;
• and
• utilizing the reading circuit to amplify the plurality of sensing signals and output the amplified plurality of sensing signals,
• wherein duration of the plurality of first impulses are forbidden to overlap with duration of the plurality of second impulses.

A display device, comprising:

• a plurality of pixel circuits, wherein a pixel circuit of the plurality of pixel circuits is coupled with a first node point;
• a plurality of optical sensing circuits, wherein an optical sensing circuit of the plurality of optical sensing circuits is coupled with the first node point;
• a source driving circuit, configured to provide a data signal;
• a reading circuit, coupled with the source driving circuit;
• a plurality of multiplexers, wherein a multiplexer of the plurality of multiplexers is coupled with the first node point, and the multiplexer is configured to selectively couple the first node point with the source driving circuit or the reading circuit;
• and
• a gate driving circuit, configured to supply a first control signal and a second control signal, wherein the first control signal provides a first impulse, the first impulse is configured to enable the pixel circuit to receive the data signal from the first node point, the second control signal provides a second impulse, and the second impulse is configured to enable the optical sensing circuit to output a sensing signal to the reading circuit through the first node point,
• wherein the reading circuit is configured to amplify the sensing signal and output the amplified sensing signal, and duration of the second impulse overlaps with duration of the first impulse.