Patent ID: 7148089

Claim:
A method for forming an improved fuse link structure comprising the steps of: providing spaced apart first and second metal interconnect structures each respectively electrically interconnected to form fuse interconnect portions extending through a plurality of dielectric insulating layers including an uppermost metal interconnect layer; forming a first dielectric insulating layer over the uppermost metal interconnect layer; forming at least a second dielectric insulating layer over the first dielectric insulating layer; forming first and second trench openings in said at least a second dielectric insulating layer to respectively overlie the first and second metal interconnect structures; forming first and second via openings extending from a bottom portion of the respective first and second trench openings through the first dielectric insulating layer to respectively overlie the first and second metal interconnect structures while simultaneously etching away a predetermined thickness of the at least a second dielectric insulating layer spanning an area extending between the first and second trench openings; and, filling the first and second via openings and first and second trench openings with a metal to form a metal fuse link electrically interconnecting the first and second metal interconnect structures to form a metal fuse link portion comprising the predetermined thickness.