Patent ID: 7790534
Filing Date: 2010-09-07
Classification: H01L

Abstract:
1. A method for forming a current switching region in a thin film transistor, the method comprising: forming a feature, said feature comprising a layer of amorphous silicon, amorphous germanium, or amorphous silicon-germanium, wherein said layer has a width in at least one dimension of about 0.25 microns or less; forming a titanium film on and in contact with said feature; annealing said feature and said titanium film to form titanium silicide, titanium germanide, or titanium silicide-germanide and to crystallize said layer of amorphous silicon, said amorphous germanium, or said amorphous silicon-germanium of said feature to form polycrystalline silicon, polycrystalline germanium, or polycrystalline silicon-germanium; and forming the thin film transistor, wherein said polycrystalline silicon feature, said polycrystalline germanium feature, or said polycrystalline silicon-germanium feature comprises the current switching region of the thin film transistor.