Patent ID: 8932936
Filing Date: 2015-01-13
Classification: H01L

Abstract:
1. A method, comprising: providing a substrate; forming a fin structure including a plurality of fins over the substrate; after forming the fin structure, etching the substrate in a first longitudinal direction thereby forming a first opening in the first longitudinal direction, wherein etching the substrate in the first longitudinal direction includes removing at least a part of a first fin of the plurality of fins; after forming the fin structure, forming a second opening in the substrate in a second longitudinal direction, wherein the first and second longitudinal directions are different; and depositing a filling material in the first and second openings performing a chemical mechanical polishing (CMP) process to remove excess filling material and uncover top portions of at least one fin of the plurality of fins of the fin structure and etching back the filling material thereby uncovering sidewalls of at least one fin of the plurality of fins of the fin structure.