Patent ID: 8927985
Filing Date: 2015-01-06
Classification: H01L

Abstract:
1. A semiconductor device comprising: a first conductive layer and a second conductive layer over an insulating surface; a first insulating layer over the first conductive layer and the second conductive layer; a first oxide semiconductor layer and a second oxide semiconductor layer over the first insulating layer; a third conductive layer and a fourth conductive layer over the first oxide semiconductor layer; a second insulating layer over the third conductive layer and the fourth conductive layer; and a fifth conductive layer over the second insulating layer; wherein the third conductive layer is electrically connected to the second conductive layer, wherein the fifth conductive layer is electrically connected to the fourth conductive layer, wherein at least part of the first conductive layer has a function as a gate electrode of a transistor, wherein at least part of the third conductive layer has a function as one of a source electrode and a drain electrode of the transistor, wherein at least part of the fourth conductive layer has a function as the other of the source electrode and the drain electrode of the transistor, wherein the first oxide semiconductor layer has a region overlapping with the first conductive layer, wherein the second oxide semiconductor layer has a region overlapping with the fifth conductive layer, and wherein the second oxide semiconductor layer has a region intersecting with the second conductive layer.