Patent ID: 6531385
Filing Date: 2003-03-11
Classification: H01L

Abstract:
A method of forming a metal/dielectric multi-layered interconnect, comprising:providing a substrate; forming a conductive layer over the substrate; forming a protective layer over the conductive layer, wherein a material of the protective layer includes silicon oxynitride; forming a first fluorinated silica glass film over the substrate by performing a high-density plasma vapor chemical deposition conducted using a first bias-voltage power; forming a second fluorinated silica glass layer over the first fluorinated silica glass film by performing a high-density plasma chemical vapor deposition conducted using a second bias-voltage power, wherein the first bias-voltage power is lower than the second bias-voltage power; forming an anti-reflection coating over the second fluorinated silica glass layer; forming a via opening in the fluorinated silica glass layer above the conductive layer; and forming a barrier layer onto the via opening and anti-reflection coating layer; forming a tungsten layer over the substrate such that the via opening is completely filled.