Patent ID: 7176075
Filing Date: 2007-02-13
Classification: H01L,Y10S

Abstract:
1. A method of forming a transistor comprising: forming a narrow bandgap semiconductor film on an insulating substrate; forming a mask on said narrow bandgap semiconductor film to define a channel region; removing said narrow bandgap semiconductor film in alignment with said mask to remove said narrow bandgap semiconductor film from subsequent source/drain regions and thereby forming a channel region; removing said mask from said channel region; forming a source/drain film on said insulating substrate and over said narrow bandgap semiconductor film; planarizing said source/drain film whereby a portion of said source/drain film is removed and remaining said film is substantially planar with the top surface of said narrow bandgap semiconductor film; forming a gate dielectric film on said narrow bandgap semiconductor film; forming a gate electrode film over said gate dielectric film; etching said gate electrode film and said gate dielectric film to form a gate electrode and gate dielectric.