Patent ID: 6326286
Filing Date: 2001-12-04
Classification: H01L

Abstract:
A method for crystallizing an amorphous silicon layer disposed on a substrate, the method comprising the steps of:preparing a first laser pattern comprising a plurality of chevron-shaped lines, wherein the chevron-shaped lines are aligned in a first direction;first-irradiating the amorphous silicon layer with a laser beam at an energy density sufficient to induce substantially complete melting to form a melted region and an unmelted region;solidifying the melted region of the amorphous silicon layer with a lateral grain growth from the unmelted region to the melted region;translating the amorphous silicon layer relative to the first laser pattern over a first distance; andsecond-irradiating the amorphous silicon layer with the laser beams at an energy density sufficient to induce complete melting and crystallizing the irradiated portions of the amorphous silicon layer.