| CPC B60R 21/0134 (2013.01) [B60R 21/00 (2013.01); G06V 20/56 (2022.01); B60R 2021/01013 (2013.01); B60R 2021/01211 (2013.01); B60R 21/013 (2013.01); G06T 2207/30252 (2013.01)] | 8 Claims |
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2. An imaging device comprising:
a pixel portion comprising a plurality of pixels arranged in a matrix; and
a driver circuit,
wherein each of the plurality of pixels comprises a light-receiving element, a first transistor, and a capacitor which is electrically connected to a cathode of the light-receiving element through the first transistor,
wherein the driver circuit comprises a second transistor,
wherein the second transistor is on a different layer from the first transistor, the capacitor, and the light-receiving element,
wherein the first transistor and the capacitor are overlapped with an anode of the light-receiving element,
wherein the first transistor comprises a first channel formation region, a first conductive layer as a first gate, and a source or drain,
wherein the second transistor comprises a second channel formation region and a second conductive layer as a second gate,
wherein the anode of the light-receiving element is on a first side of the first channel formation region,
wherein the first conductive layer is on a second side which is on the side opposite to the first side of the first channel formation region,
wherein the anode of the light-receiving element is on a first side of the second channel formation region,
wherein the second conductive layer is on the first side of the second channel formation region,
wherein a first electrode of the capacitor is on the same layer as the first conductive layer,
wherein a second electrode of the capacitor is on the same layer as a third conductive layer which is electrically connected to the source or drain of the first transistor, and
wherein a side surface of the light-receiving element is in contact with an insulating layer.
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