Patent ID: 9082615
Filing Date: 2015-07-14
Classification: H01L

Abstract:
1. A polysilicon manufacturing method that controls a growth direction of polysilicon, comprising the following steps: (1) forming a first buffer layer on a substrate through deposition; (2) applying a masking operation to form a lens-like structure on a surface of the first buffer layer; (3) depositing and forming an amorphous silicon layer on the first buffer layer of which the surface comprises the lens-like structure formed thereon; (4) subjecting the amorphous silicon layer to rinsing; (5) irradiating the amorphous silicon layer with an intense light from the side of the substrate so as to generate a crystal seed at a bottom of the amorphous silicon layer; and (6) applying a laser annealing operation to the amorphous silicon layer that comprises a crystal seed generated therein so as to have amorphous silicon contained in the amorphous silicon layer crystallized and forming a polysilicon layer.