Patent ID: 8232573

Claim:
A semiconductor chip assembly, comprising: a semiconductor device; an adhesive that includes an opening; an aluminum heat spreader that includes a post and a base, wherein the post is adjacent to the base and extends above the base in an upward direction, and the base extends below the post in a downward direction opposite the upward direction and extends laterally from the post in lateral directions orthogonal to the upward and downward directions; and a conductive trace that includes a pad and a terminal, wherein the conductive trace further includes a silver coating and a copper core and the silver coating is located above and overlaps the copper core; wherein the semiconductor device is mounted on the heat spreader, overlaps the post, is electrically connected to the pad and thereby electrically connected to the terminal, and is thermally connected to the post and thereby thermally connected to the base; wherein the adhesive is mounted on and extends above the base, extends between the post and the pad, extends laterally from the post to or beyond the terminal and is sandwiched between the base and the pad; wherein a top surface of the copper core is coplanar with the post and the adhesive at a lateral surface that faces in the upward direction; and wherein the post extends into the opening, and the base extends below the semiconductor device and the pad.