Patent ID: 8969147
Filing Date: 2015-03-03
Classification: H01L

Abstract:
1. A method for manufacturing a semiconductor device comprising the steps of: forming a first semiconductor layer having an island shape over a substrate; forming a gate electrode over a channel formation region in the first semiconductor layer having the island shape with a gate insulating layer interposed therebetween; forming insulating layers on side surfaces of the gate electrode; forming a first region as a source region and a second region as a drain region in the first semiconductor layer having the island shape wherein the channel formation region is positioned between the first region and the second region; forming a second semiconductor layer which is in direct contact with the first semiconductor layer having the island shape and which covers a top surface of the gate electrode, the first region, the second region, and the insulating layers; forming a resist over the second semiconductor layer to expose a portion of the second semiconductor layer which covers the top surface of the gate electrode; and etching the portion of the second semiconductor layer using the resist as a mask.