Patent ID: 7067896

Claim:
An option selection device structure comprising: a substrate; a terminal metal layer and an option selection device at a co-planar level over the substrate; a patterned terminal metal passivation layer covering the option selection device with a via which accesses the terminal metal layer, the patterned terminal metal passivation layer having within its thickness an etch stop layer; a barrier layer interposed between the option selection device and the patterned terminal metal passivation layer; a bond pad layer within the via and physically contacting the terminal metal layer; and a patterned bond pad passivation layer upon the patterned terminal metal passivation layer and edge passivating the bond pad layer, wherein the patterned terminal metal passivation layer comprises a first dielectric layer above the terminal metal layer and the option selection device and underlying the etch stop layer and a second dielectric layer on the etch stop layer and underlying the patterned bond pad passivation layer.