Patent ID: 6348395
Filing Date: 2002-02-19
Classification: H01L

Abstract:
A method of planarizing a semiconductor comprising:forming a first layer of a first material comprising a diamond-like carbon material on a surface of a substrate, said first layer comprising a first polish stop; forming a second layer of a second material on the surface of said first layer, said second layer comprising a hard-mask and a second polish stop; patterning said surface of said substrate thereby forming a plurality of openings therein; forming a third layer of a third material on the surface of said substrate thereby at least filling a set of said plurality of openings; and planarizing said surface of said substrate to remove at least any excess of said third layer, the planarization removing said second layer, thereby stopping at said first layer, therein said first layer allowing over-planarization of the surface of the substrate to achieve an overall substantial planarity of said surface.