Patent ID: 8841730
Filing Date: 2014-09-23
Classification: H01L

Abstract:
1. A semiconductor device comprising: a bonding layer over a substrate having an insulating surface; a first single-crystal semiconductor layer including a first channel formation region and a first impurity region over the bonding layer; a first gate insulating layer over the first single-crystal semiconductor layer; a gate electrode over the first gate insulating layer; a first interlayer insulating layer over the first gate insulating layer; a second gate insulating layer over the gate electrode and the first interlayer insulating layer; and a second single-crystal semiconductor layer including a second channel formation region and a second impurity region over the second gate insulating layer, wherein the first channel formation region, the gate electrode, and the second channel formation region overlap with each other, and wherein the first gate insulating layer is in contact with the bonding layer.