Patent ID: 8143115
Filing Date: 2012-03-27
Classification: H01L

Abstract:
1. A method of manufacturing a thin film transistor having on a substrate, at least a gate electrode, a first insulating film, an oxide semiconductor layer, a second insulating film, a source electrode and a drain electrode, comprising the steps of: forming a gate electrode on a substrate; forming a first insulating film on the gate electrode; forming an oxide semiconductor layer on the first insulating film with an amorphous oxide containing at least In and Zn; patterning the first insulating film; patterning the oxide semiconductor layer; forming a second insulating film on the oxide semiconductor layer in an oxidative-gas-containing atmosphere; patterning the second insulating film to expose a pair of contact regions in the oxide semiconductor layer and lower the electric resistance of the contact regions by generating oxygen defects in the contact regions; forming an electrode layer on the pair of contact regions; and patterning the electrode layer to form a source electrode and a drain electrode.