Patent ID: 7868457

Claim:
An electrical structure comprising: a first substrate comprising a first electrically conductive pad formed within said first substrate, wherein said first electrically conductive pad comprises a first material layer formed over and in contact with a second material layer, and wherein said first material layer comprises a different material from said second material layer; a second substrate comprising a second electrically conductive pad formed within said second substrate, wherein said second electrically conductive pad comprises a third material layer formed over and in contact with a fourth material layer, and wherein said third material layer comprises a different material from said fourth material layer; and an interconnect structure electrically and mechanically connecting said first electrically conductive pad to said second electrically conductive pad, wherein said interconnect structure comprises a non-solder metallic core structure, wherein a first portion of said non-solder metallic core structure is thermo-compression bonded to said first electrically conductive pad, and wherein a second portion of said non-solder metallic core structure is thermo-compression bonded to said second electrically conductive pad.