Patent ID: 7390705

Claim:
A method for crystallizing an amorphous semiconductor thin film, the amorphous semiconductor thin film crystallizing method comprising the steps of: forming a pair of non-metal seeds for inducing a crystallization of an amorphous semiconductor thin film at a predetermined distance on a transparent insulation substrate; depositing the amorphous semiconductor thin film on the entire surface of the insulation substrate; and heat-treating the insulation substrate to thereby epitaxially grow a poly-crystalline semiconductor thin film from the non-metal seeds, and to thus crystallize the amorphous semiconductor thin film; wherein the step of forming the pair of non-metal seeds includes the sub-steps of: depositing an amorphous silicon thin film on the insulation substrate; selectively forming a pair of island-type metal patterns at positions corresponding to the pair of non-metal seeds using the crystallization induced metal above the amorphous silicon thin film; patterning the amorphous silicon thin film using the pair of island-type metal patterns as an etching mask to thereby form a pair of amorphous silicon patterns; heat-treating the substrate to form a pair of non-metal seeds made of metal silicide; and removing the remaining metal which is not converted into the silicide in the heat-treatment step.