Patent ID: 6214653
Filing Date: 2001-04-10
Classification: H01L

Abstract:
A method of forming a semiconductor substrate, comprising:etching a groove into a bulk silicon substrate;forming a dielectric in said groove and planarizing said balk silicon substrate to form at least one patterned dielectric island in said bulk silicon substrate;forming an amorphous silicon layer on exposed portions of said bulk silicon substrate and said at least one dielectric island;crystallizing said amorphous silicon layer, to form a crystallized silicon layer, using the exposed portions of said bulk silicon substrate as a seed, said balk silicon substrate having direct contact with the amorphous silicon layer serving as a crystal growth seeding for the crystallization process, and converting the amorphous silicon layer to crystallized silicon layer; andperforming a shallow trench isolation (STI) process, to form oxide isolations between devices.