Sensor and Display Device

A sensor comprising:

• a plurality of electric lines including row lines, column lines and reset lines;
• a photodiode in a pixel;
• a readout transistor portion arranged between the photodiode and a column line among the plurality of electric lines, a gate of the readout transistor portion being connected to a row line among the plurality of electric lines;
• a drain of a first transistor connected to the photodiode;
• a drain of a second transistor connected in series with a source of the first transistor in the pixel;
• and
• both a gate of the first transistor and a gate of the second transistor are connected to the reset line;
• wherein a channel material of the first transistor is different from a channel material of the second transistor.

A display device comprising a sensor and a light emitting portion, the light emitting portion and the sensor are provided in the same pixel, wherein the sensor comprising:

• a plurality of electric lines including row lines and column lines;
• a photodiode in a pixel;
• a drain of a first transistor connected to the photodiode in the pixel;
• a drain of a second transistor connected in series with a source of the first transistor in the pixel;
• a source of the second transistor being connected to a column line among the plurality of electric lines;
• and
• both a gate of the first transistor and a gate of the second transistor being connected to a row line among the plurality of electric lines;
• wherein a channel material of the first transistor is different from a channel material of the second transistor.

A display device comprising a sensor and a light emitting portion, the light emitting portion and the sensor are provided in the same pixel, wherein the sensor comprising:

• a plurality of electric lines including row lines, column lines and reset lines;
• a photodiode in a pixel;
• a readout transistor portion arranged between the photodiode and a column line among the plurality of electric lines, a gate of the readout transistor portion being connected to a row line among the plurality of electric lines;
• a drain of a first transistor connected to the photodiode;
• a drain of a second transistor connected in series with a source of the first transistor in the pixel;
• and
• both a gate of the first transistor and a gate of the second transistor are connected to the reset line;
• wherein a channel material of the first transistor is different from a channel material of the second transistor.

A display device, comprising:

• a light emitting portion including a light emitting diode, a switching transistor, and a first reset transistor;
• and
• a photodiode portion including a readout transistor and a second reset transistor, during a light emitting period of the light emitting diode, the second reset transistor resets data, and during a readout period of the readout transistor, the first reset transistor resets data;
• wherein
• a gate of the switching transistor and a gate of the second reset transistor are connected to a first scan line, and
• the gate of the first reset transistor and the readout transistor are connected to a second scan line.