Patent ID: 6444503
Filing Date: 2002-09-03
Classification: H01L

Abstract:
A method of forming an electrical metal fuse, comprising the steps of:providing a substrate; forming a first patterned dielectric layer over the substrate; the first patterned dielectric layer having at least one first opening exposing at least a portion of the substrate; forming a first planarized structure within the at least one first opening; forming a second patterned dielectric layer over the first planarized structure; the second patterned dielectric layer having a second opening exposing at least a portion of the first planarized structure; and forming a second planarized structure within the second opening whereby the first planarized structure and the second planarized structure comprise the electrical metal fuse; the electrical metal fuse having a middle portion having a thickness and a width between two end portions each having a thickness and a width; the thickness and width of the middle portion being less than the respective thickness and width of the end portions.