Patent ID: 6080656
Filing Date: 2000-06-27
Classification: H01L

Abstract:
A method for forming a copper structure with reduced dishing, comprising the steps of:a. providing a semiconductor structure having a dielectric layer thereover; said dielectric layer having a trench therein; said trench having a bottom and sidewalls;b. forming a barrier layer over said dielectric layer, and forming a seed layer on said barrier layer;c. forming an insulating layer on said seed layer;d. patterning said insulating layer; thereby exposing said seed layer on said bottom and said sidewalls of said trench;e. selectively electro-chemically depositing a copper layer onto said seed layer on said bottom and said sidewalls of said trench; andf. planarizing said copper layer, said insulating layer, said seed layer, and said barrier layer stopping at said dielectric layer.