Patent ID: 7472650

Claim:
A structure, comprising a layered configuration comprising a copper layer that includes copper, a first layer, and a second layer; wherein the first and second layers are disposed on opposite sides of the copper layer and are in direct mechanical contact with the copper layer; wherein the first and second layers each comprise a same alloy of nickel and a metal; wherein the metal consists of iron, copper, manganese, or molybdenum; wherein a first region in the first layer extends completely through the first layer; wherein a second region in the second layer extends completely through the second layer; wherein a third region in the first layer extends completely through the first layer and is separated from the first region by the alloy; wherein the first region is aligned directly above the second region in a first direction that is perpendicular to an interfacial surface between the first layer and the copper layer; wherein the third region does not extend into any portion of the second layer; and wherein the first region, the second region, and the third region each comprise a photoresist or an opening such that photoresist or the opening extends completely through the first layer, the second layer, and the first layer, respectively.