Patent ID: 6610596
Filing Date: 2003-08-26
Classification: H01L

Abstract:
A method of forming a metal interconnection, the method comprising:forming an insulation layer having an upper surface on a substrate; forming a recess region in the insulation layer; forming a diffusion prevention layer over the upper surface of the insulation layer and over the recess region formed in the insulating layer; forming a metal seed layer over the diffusion prevention layer only in the recess region, wherein the diffusion prevention layer remains formed over the upper surface region of the insulating layer after the metal seed layer is formed only in the recess region; and forming, after said forming the metal seed layer only in the recess region, a conductive plating layer on the metal seed layer using a plating process; wherein forming the metal seed layer comprises forming a preliminary seed layer over the diffusion prevention layer, and removing a first portion of the preliminary seed layer outside of the recess region such that a second portion of the preliminary seed layer in the recess region forms the metal seed layer.