Patent ID: 9196648
Filing Date: 2015-11-24
Classification: H01L

Abstract:
1. A semiconductor device comprising: a light-receiving element comprising a first conductive region and a second conductive region; a first transistor being provided over the light-receiving element with an insulating film provided therebetween, one of a source and a drain of the first transistor being electrically connected to one of the first conductive region and the second conductive region of the light-receiving element; and a second transistor, a gate of the second transistor being electrically connected to the other of the source and the drain of the first transistor, wherein a channel formation region of the first transistor comprises an oxide semiconductor layer, and wherein one of the first conductive region and the second conductive region and the oxide semiconductor layer overlap with each other, and the other of the first conductive region and the second conductive region and the oxide semiconductor layer do not overlap with each other.