Patent ID: 9082643
Filing Date: 2015-07-14
Classification: H01L

Abstract:
1. A semiconductor device, comprising: a first wiring layer including a first interlayer insulating layer, and a first wiring embedded in the first interlayer insulating layer; a second wiring layer including a cap insulating layer formed over the first wiring layer, a second interlayer insulating layer provided over the cap insulating layer, and a second wiring embedded in the second interlayer insulating layer; a first transistor of a first conductive type provided in the first wiring layer and the second wiring layer; a second transistor of a second conductive type other than the first conductive type provided in the first wiring layer and the second wiring layer, wherein the first transistor includes: a first gate electrode as one first wiring; a first gate insulating film provided over the first gate electrode and including a part of the cap insulating layer; a first oxide semiconductor layer formed over the first gate insulating film; a first hard mask layer provided over the first oxide semiconductor layer; and a first insulating sidewall film covering a side of the first oxide semiconductor layer, wherein the second transistor includes: a second gate electrode as another first wiring; a second gate insulating film provided over the second gate electrode to lead to the first gate insulating film, and including another part of the cap insulating layer; a second oxide semiconductor layer provided over the second gate insulating film; and a second hard mask layer provided over the second oxide semiconductor layer.