Patent ID: 7576407

Claim:
A semiconductor integrated fuse device, comprising: a polysilicon layer comprising an anode and cathode, and fuse link formed between the anode and cathode, wherein the fuse link comprises a first doped polysilicon region having a first dopant concentration and a second doped polysilicon region having a second dopant concentration that is greater than the first dopant concentration; a conductive layer formed on the polysilicon layer, wherein a thickness of the conductive layer over the fuse link varies, wherein a portion of the conductive layer over the first doped polysilicon region has a first thickness, wherein a portion of the conductive layer over the second doped polysilicon region has a second thickness that is less than the first thickness, wherein the second doped polysilicon region is an electrically neutral doped polysilicon region, and wherein the first doped polysilicon region includes n-type dopants or p-type dopants.