Patent ID: 7279374

Claim:
A method for manufacturing a thin film transistor, comprising: forming an amorphous silicon layer and a blocking layer on an insulating substrate; forming a photoresist layer having first and second photoresist patterns on the blocking layer, the first and second photoresist patterns spaced apart from each other; etching the blocking layer using the first photoresist pattern as a mask to form first and second blocking patterns; reflowing the photoresist layer, so that the first and second photoresist patterns abut each other to entirely cover the first and second blocking patterns; forming a metal layer over an entire first surface of the insulating substrate; removing the photoresist layer to expose the blocking layer and an offset region between the blocking layer and the metal layer; crystallizing the amorphous silicon layer to form a poly silicon layer with a metal induced lateral crystallization front etching the poly silicon layer using the first and second blocking patterns as a mask to form first and second semiconductor layers and to remove the metal induced lateral crystallization front; removing the first and second blocking patterns; and forming a metal layer for a source electrode and a drain electrode.