Patent ID: 6458636
Filing Date: 2002-10-01
Classification: H01L

Abstract:
A method for fabricating a thin-film transistor, comprising the steps of:forming an amorphous silicon layer and a silicon oxidation layer on a substrate; implanting semiconductor ions into the amorphous silicon layer and the silicon oxidation layer while heating the substrate to transform the amorphous silicon layer into a polycrystalline silicon layer and forming an amorphous oxidation layer between the amorphous silicon layer and the silicon oxidation layer; removing the silicon oxidation layer; annealing the amorphous oxidation layer to transform the amorphous oxidation layer into a crystallized oxidation layer; forming a gate electrode on the crystallized oxidation layer; forming a source region, a drain region and a channel region in the polycrystalline silicon layer; and forming a source electrode and a drain electrode which contact the source region and the drain region, respectively.