Patent ID: 8994019
Filing Date: 2015-03-31
Classification: H01L

Abstract:
1. A semiconductor device comprising: a non-single-crystal oxide semiconductor layer containing at least indium, zinc and a stabilization agent including cerium over a substrate; a source electrode layer and a drain electrode layer over the oxide semiconductor layer; a gate insulating film over the oxide semiconductor layer, the source electrode layer, and the drain electrode layer; and a gate electrode layer over the gate insulating film, wherein the oxide semiconductor layer comprises a channel formation region, a first region, and a second region, wherein the oxide semiconductor layer is electrically connected to the source electrode layer and the drain electrode layer, wherein the first region is not overlapped with the gate electrode layer, the source electrode layer and the drain electrode layer, wherein the second region is overlapped with the source electrode layer or the drain electrode layer, and wherein a resistance in the second region is higher than a resistance in the first region.