Patent ID: 7737528
Filing Date: 2010-06-15
Classification: H01L

Abstract:
1. A fuse structure for an integrated circuit device, comprising: an elongated metal interconnect layer defined within an insulating layer, the elongated metal interconnect layer comprising wide regions at opposing ends thereof and a narrow region between the wide region; a metal cap layer formed on a top surface of the wide regions, and on only a portion of a top surface of the narrow region of the metal interconnect layer; and a dielectric cap layer formed on both the metal cap layer and the remaining portions of the narrow region of the metal interconnect layer not having the metal cap layer formed thereon; wherein the remaining portions of the narrow region of the metal interconnect layer not having the metal cap layer formed thereon is susceptible to an electromigration failure mechanism so as to facilitate programming of the fuse structure by application of electric current through the elongated metal interconnect layer.