Patent ID: 7754509
Filing Date: 2010-07-13
Classification: H01L

Abstract:
1. A manufacturing method for a thin film transistor (TFT), comprising the steps of: providing a substrate having a gate structure thereon with a first insulative layer on said gate structure and said substrate; forming a semiconductor layer and an ohmic contact layer on said first insulative layer, wherein the ohmic contact layer is made of an n-type semiconductor; forming a first photoresist layer directly contacting said ohmic contact layer; etching said semiconductor layer and said ohmic contact layer to form a source structure and a drain structure in said ohmic contact layer and form a channel structure in said semiconductor layer; forming a second photoresist layer on said first photoresist layer and said semiconductor layer; etching said semiconductor layer to form a semiconductor structure on said semiconductor layer; and removing said first and second photoresist layers.