Matrix of sensor units each comprising a first sensing element and a second sensing element

An input or output device comprising:

• a sensor unit comprising a first sensing element, a second sensing element, a capacitor, a transistor, a first switch, a second switch, a third switch and a fourth switch;
• and
• a pixel comprising a light-emitting element,
• wherein the first sensing element comprises a first electrode, a second electrode, and an insulating layer between the first electrode and the second electrode,
• wherein the second sensing element comprises a photoelectric conversion element,
• wherein a first terminal of the first switch is electrically connected to an electrode of the transistor,
• wherein a second terminal of the first switch is electrically connected to a first wiring,
• wherein a first terminal of the second switch is electrically connected to a gate of the transistor,
• wherein a second terminal of the second switch is electrically connected to a second wiring,
• wherein a first terminal of the third switch is electrically connected to the gate of the transistor,
• wherein a second terminal of the third switch is electrically connected to an electrode of the second sensing element,
• wherein a first terminal of the fourth switch is electrically connected to the gate of the transistor,
• wherein a second terminal of the fourth switch is electrically connected to the first electrode of the first sensing element,
• wherein an electrode of the capacitor is electrically connected to the second terminal of the third switch, and
• wherein the first sensing element and the light-emitting element overlap each other.

An input device comprising:

• a first sensing element comprising a first electrode, a second electrode, and an insulating layer between the first electrode and the second electrode;
• a second sensing element comprising a photoelectric conversion element;
• and
• a sensing circuit comprising:
• a first transistor comprising a gate electrically connected to the first electrode of the first sensing element and a first electrode electrically connected to a first wiring;
• a first switch comprising a control terminal electrically connected to a second wiring, a first terminal electrically connected to a second electrode of the first transistor, and a second terminal electrically connected to a third wiring;
• a second switch comprising a control terminal electrically connected to a fourth wiring, a first terminal electrically connected to the first electrode of the first sensing element, and a second terminal electrically connected to a fifth wiring;
• and
• a third switch comprising a control terminal electrically connected to a sixth wiring and a first terminal electrically connected to the first electrode of the first sensing element,
• wherein the second sensing element comprises a first electrode electrically connected to a second terminal of the third switch and a second electrode electrically connected to the first wiring.

An input device comprising:

• a first sensing element comprising a first electrode, a second electrode, and an insulating layer between the first electrode and the second electrode;
• a second sensing element comprising a photoelectric conversion element;
• and
• a sensing circuit comprising:
• a first transistor comprising a first electrode electrically connected to a first wiring;
• a first switch comprising a control terminal electrically connected to a second wiring, a first terminal electrically connected to a second electrode of the first transistor, and a second terminal electrically connected to a third wiring;
• a second switch comprising a control terminal electrically connected to a fourth wiring, a first terminal electrically connected to a gate of the first transistor, and a second terminal electrically connected to a fifth wiring;
• a third switch comprising a control terminal electrically connected to a sixth wiring and a first terminal electrically connected to the gate of the first transistor;
• a fourth switch comprising a control terminal electrically connected to a seventh wiring and a first terminal electrically connected to the gate of the first transistor;
• and
• a capacitor comprising a first electrode electrically connected to a second terminal of the third switch and a second electrode electrically connected to an eighth wiring,
• wherein the first electrode of the first sensing element is electrically connected to a second terminal of the fourth switch and the second electrode of the first sensing element is electrically connected to the eighth wiring, and
• wherein the second sensing element comprises a first electrode electrically connected to the second terminal of the third switch and a second electrode electrically connected to the first wiring.