Patent ID: 8003474
Filing Date: 2011-08-23
Classification: H01L

Abstract:
1. A fabrication method of an electrically programmable fuse comprising an anode, a cathode and a fuse link, the method comprising: forming a polysilicon layer on a substrate; forming a silicide mask on a portion of the polysilicon layer formed for the cathode to block a formation of silicide on the portion; depositing a metal layer on the silicide mask and on the polysilicon layer not covered by the silicide mask; reacting the metal layer with the polysilicon layer not covered by the silicide mask and forming a silicide layer on the polysilicon layer; and removing the silicide mask for the cathode and un-reacted deposited metal formed on the silicide mask, and exposing the polysilicon layer formed beneath the silicide mask to form the anode, the cathode, and the fuse link.