Patent ID: 8610245

Claim:
An anti-fuse element comprising: an insulation layer having opposed first and second surfaces; a first electrode layer on the first surface of the insulation later; a second electrode layer on the second surface of the insulation layer; and an extraction electrode contacting a section of at least one of the first and second electrode layers that form electrostatic capacitance with the insulation layer, wherein the anti-fuse element is configured to create a structural change section when a voltage not less than a breakdown voltage of the insulation layer is applied, the structural change section including a short circuit section wherein the first and second electrode layers are fused mutually to engulf the insulation layer, and a dissipation section with the first and second electrode layers and the insulation layer dissipated by the engulfing of the insulation layer, wherein a maximum diameter of a section of the extraction electrode in contact with the at least one of the first and second electrode layers is larger than a maximum diameter of the structural change section, and wherein the insulation layer includes (Ba,Sr) TiO 3 , and the first and second electrode layers include a metal or an alloy thereof including at least one element selected from the group consisting of Au, Ag, Pt, Pd, Rh, Ir, Ru, and Os.