Patent ID: 7301216
Filing Date: 2007-11-27
Classification: H01L

Abstract:
1. A fuse structure comprising: a substrate, a fuse area being included on a surface of the substrate; a first dielectric layer on the surface of the substrate; at least one metal structure disposed in the first dielectric layer; a second dielectric layer disposed on the first dielectric layer and the metal structure; at least one fuse on the second dielectric layer in the fuse area, the fuse having a thin portion and a thick portion; plurality of conductive plugs disposed in the second dielectric layer for connecting the fuse and the metal structure; a third dielectric layer on the second dielectric layer that covers the thick portion; and a first opening in the third dielectric layer exposing the thin portion; and a fourth dielectric layer on the third dielectric layer that covers the thin portion of the fuse.