Patent ID: 7439116
Filing Date: 2008-10-21
Classification: C23C,H01L,Y10T

Abstract:
1. A method for forming a polycrystalline silicon thin film by including depositing an amorphous silicon layer on a glass substrate and forming a metal layer on the amorphous silicon layer to crystallize the amorphous silicon layer, the method comprising: a metal nucleus adsorbing step of introducing a vapor phase metal compound into a process space where the glass substrate having the amorphous silicon formed thereon is disposed, to adsorb a metal nucleus contained in the metal compound into the amorphous silicon layer; a metal nucleus distribution region-forming step of forming a community region including a plurality of silicon particles every metal nucleus in a plane boundary region occupied by the metal compound by a self-limited mechanism due to the adsorption of the metal nucleus; and an excess gas-removing step of purging and removing an excess gas which is not adsorbed in the metal nucleus distribution region-forming step.