Patent ID: 7345361

Claim:
An apparatus comprising: an integrated circuit die; an integrated circuit package coupled to the integrated circuit die; mold compound in contact with the integrated circuit die and the integrated circuit package; a first solder ball in contact with the integrated circuit package; a second integrated circuit package; and a second solder ball, wherein the second solder ball is in contact with the second integrated circuit package, and in contact with the mold compound, wherein the first solder ball comprises a greater radius and a greater circumference than the second solder ball, wherein a first portion of the first solder ball is in contact with the mold compound, wherein a second portion of the first solder ball is not in contact with the mold compound, wherein the mold compound defines an opening, wherein the second portion of the first solder ball is recessed beneath the opening, wherein a third portion of the first solder ball is in contact with the integrated circuit package, and wherein the second solder ball is in contact with the first solder ball within the opening.