Patent ID: 8278162
Filing Date: 2012-10-02
Classification: H01L

Abstract:
1. A method for manufacturing a semiconductor device comprising: forming a first conductive layer over an insulating surface; performing a first patterning to form a first gate electrode; forming a first insulating film over the first gate electrode; forming a second conductive layer over the first insulating film; performing a second patterning to form a wiring layer; forming an oxide semiconductor film, a second insulating film, and a third conductive layer over the first insulating film and the wiring layer; performing a third patterning to form an island-shaped oxide semiconductor film, an island-shaped second insulating film over the island-shaped oxide semiconductor film, and a second gate electrode over the island-shaped second insulating film; forming an interlayer insulating layer covering the first insulating film, the wiring layer, the island-shaped oxide semiconductor film, the island-shaped second insulating film, and the second gate electrode; performing a fourth patterning to form an opening portion reaching the second gate electrode and an opening portion reaching the wiring layer; forming a conductive material over the interlayer insulating layer; and performing a fifth patterning to form a lead wiring connected to the second gate electrode and a pixel electrode connected to the wiring layer.