Sensing panel, and display device and driving method thereof

A display device comprising a sensing panel, the sensing panel comprises:

• a base substrate;
• a plurality of photosensitive units arranged in an array on the base substrate;
• and
• a plurality of pressure-sensitive units arranged in an array on the base substrate;
• wherein the plurality of photosensitive units and the plurality of pressure-sensitive units are stacked, and at least one of the plurality of photosensitive units and at least one pressure-sensitive unit of the plurality of pressure-sensitive units, which are stacked, share a fixed-potential electrode, and
• wherein each of the at least one pressure-sensitive unit comprises a piezoelectric material layer connected to the fixed-potential electrode and a pressure-sensitive electrode connected to the piezoelectric material layer.

A driving method for a display device, which comprises a sensing panel, the sensing panel includes:

• a base substrate;
• a plurality of photosensitive units arranged in an array on the base substrate;
• and
• a plurality of pressure-sensitive units arranged in an array on the base substrate;
• wherein the plurality of photosensitive units and the plurality of pressure-sensitive units are stacked, and at least one of the plurality of photosensitive units and at least one pressure-sensitive unit of the plurality of pressure-sensitive units, which are stacked, share a fixed-potential electrode, and
• wherein each of the at least one pressure-sensitive unit comprises a piezoelectric material layer connected to the fixed-potential electrode and a pressure-sensitive electrode connected to the piezoelectric material layer;
• the driving method includes:
• loading a fixed potential to the fixed-potential electrode;
• detecting first electrical signals output by the plurality of photosensitive units to determine a touch position;
• and
• detecting second electrical signals output by the plurality of pressure-sensitive units to determine a press position.