Patent ID: 9214566
Filing Date: 2015-12-15
Classification: H01L

Abstract:
1. A semiconductor device comprising: a first insulating film; a first oxide semiconductor film over the first insulating film; a second oxide semiconductor film over the first oxide semiconductor film, the second oxide semiconductor film comprising a channel region and a low-resistance region; a gate insulating film over the second oxide semiconductor film; a gate electrode over the gate insulating film; a second insulating film in contact with a side surface of the gate electrode; a first electrode in contact with the second oxide semiconductor film and the second insulating film; and a third insulating film over the first electrode and the gate electrode, wherein the first insulating film is in contact with the third insulating film, and wherein a resistance of the low-resistance region is lower than a resistance of the channel region, wherein the gate electrode overlaps the channel region, wherein the low-resistance region is in contact with the first electrode, and wherein the gate electrode faces a side surface of the channel region with the gate insulating film therebetween.