Patent ID: 6153512
Filing Date: 2000-11-28
Classification: H01L

Abstract:
A method of forming an intermetal dielectric, (IMD), layer, on a semiconductor substrate, comprising the steps of:providing metal interconnect structures, overlying, and contacting, underlying conductive regions;forming a thin insulator layer on said metal interconnect structures;performing a first plasma treatment on said thin insulator layer;applying a low k dielectric layer from the group consisting of one of hydrogen silsesquioxane (HSQ) and fluorinated silicon oxide (FSG) on the top surface of the plasma treated, said thin insulator layer;performing a second plasma treatment on said low k dielectric layer; anddepositing a thick insulator layer, on the plasma treated, said low k dielectric layer, to form a composite, IMD layer, comprised of underlying, said low k dielectric layer, and overlying, said thick insulator layer.