Patent ID: 7919408

Claim:
A method for fabricating fine line and space routing, comprising: forming a seed layer directly on a dielectric layer above a substrate, wherein the entire seed layer is formed directly on the dielectric layer; forming an anti-reflective coating layer and a photo-resist layer above said seed layer; patterning said photo-resist layer and said anti-reflective coating layer to form a patterned photo-resist layer and a patterned anti-reflective coating layer, to expose a first portion of said seed layer, and to leave covered a second portion of said seed layer; forming a metal layer on said first portion of said seed layer, between features of said patterned photo-resist layer and said patterned anti-reflective coating layer; removing said patterned photo-resist layer and said patterned anti-reflective coating layer; and removing said second portion of said seed layer to provide a series of metal lines above said dielectric layer.