Patent ID: 7919834

Claim:
An electronic structure, comprising: A substrate with a surface for supporting said electronic structure having at least one electrical conductor throughout said substrate with one end extending to said surface of said substrate from within said substrate; a multilayer metal contact structure positioned on at least said one end of said electrical conductor, said multilayer metal contact structure including at least a first layer of metal, said first layer of metal having edge walls, and a further layer of metal covering said at least first layer of metal and said edge walls of said first layer of metal so that said further layer of metal provides conformal side walls that protect the edge walls of said first layer of metal, said multilayer contact structure further including layer of another metal of a different metal material than the further layer of metal covering said further layer of metal and said conformal side walls of said further layer of metal, wherein said further layer of metal wraps said first layer of metal, and said further layer of metal extends along and contacts said surface of said substrate; and wherein said another layer of metal covers outmost side walls of said further layer of metal.