Patent ID: 8030782

Claim:
A device comprising: a package substrate having a surface and a metal layer disposed on a portion of the surface; an integrated circuit (IC) die having a passivation layer and a pad; a compliant interconnect electrically coupling the IC die and the package substrate, the compliant interconnect having: a fixed portion coupled with the pad on the IC die; and a spring portion extending from the fixed portion, at least part of the spring portion disposed over the passivation layer, the spring portion being separated from the passivation layer by an un-filled gap; wherein the spring portion may flex into the un-filled gap and into a closer proximity to the passivation layer upon application of a force that may be applied perpendicular to the passivation layer; and a bonding layer disposed between the metal layer of the package substrate and at least part of the spring portion, the bonding layer coupling the spring portion with the metal layer.