Patent ID: 6777274
Filing Date: 2004-08-17
Classification: H01L

Abstract:
A method of fabricating a thin film transistor of a polycrystalline silicon type, comprising the steps of:forming an amorphous silicon layer on a substrate; oxidizing a surface region of the amorphous silicon layer to form an oxidized silicon surface layer having a thickness in a range of about 20 Ã¥ to about 100 Ã¥; transforming the amorphous silicon layer and the oxidized silicon surface layer into a polycrystalline silicon layer having the oxidized surface region, wherein the step of transforming comprises the steps of: separating oxygen atoms contained in the amorphous silicon layer, the oxidized silicon surface layer, and an interface region therebetween, and bonding the separated oxygen atoms with silicon atoms in the amorphous silicon layer to cure crystal defects in the interface region; forming a gate insulation layer on the oxidized surface region; and forming a gate electrode on the gate insulation layer.