Patent ID: 8546903

Claim:
An apparatus comprising: an electronic device having an opening formed in a protective overcoat so as to form a cavity by etching in a substrate; and a sealing ring formed along the periphery of the electronic device, wherein the seal ring includes: a first barrier ring having a first set of electrically conductive layers formed between the substrate and the protective overcoat, wherein the first barrier ring includes a first opening at a first position; a second barrier ring having a second set of electrically conductive layers formed between the substrate and the protective overcoat, wherein the second barrier ring is generally parallel to the first barrier ring so as to form a cavity region therebetween, and wherein the first and second opening are separated from one another; and a circuit trace that is formed in the cavity region, wherein the circuit trace extends through the first opening so as to be electrically connected to the electronic device, and wherein the circuit trace extends through the second opening.