Patent ID: 8822990
Filing Date: 2014-09-02
Classification: G02F,H01L

Abstract:
1. A semiconductor device comprising: a gate electrode layer over an insulating surface; a gate insulating layer over the gate electrode layer; an oxide semiconductor layer comprising indium over the gate insulating layer, the oxide semiconductor layer comprising a channel formation region overlapping with the gate electrode layer with the gate insulating layer therebetween; an oxide insulating layer over the oxide semiconductor layer, the oxide insulating layer including a first contact hole and a second contact hole, wherein the oxide insulating layer covers a periphery of the oxide semiconductor layer; a source electrode layer over the oxide insulating layer, the source electrode layer being in electrical contact with the oxide semiconductor layer through the first contact hole of the oxide insulating layer; a drain electrode layer over the oxide insulating layer, the drain electrode layer being in electrical contact with the oxide semiconductor layer through the second contact hole of the oxide insulating layer; an inorganic insulating film over the source electrode layer and the drain electrode layer; a pixel electrode layer over the inorganic insulating film, the pixel electrode layer being in electrical contact with one of the source electrode layer and the drain electrode layer; and a wiring intersection of a gate wiring layer and a source wiring layer, wherein the source electrode layer overlaps with a first end of the oxide semiconductor layer with the oxide insulating layer interposed therebetween, wherein the drain electrode layer overlaps with a second end of the oxide semiconductor layer with the oxide insulating layer interposed therebetween, wherein in the wiring intersection, the gate insulating layer and the oxide insulating layer are provided between the gate wiring layer and the source wiring layer, wherein the gate wiring layer includes the gate electrode layer, and wherein the source wiring layer includes the source electrode layer.