Patent ID: 8003416

Claim:
A method of making a semiconductor chip assembly, comprising: providing a post, a base, a conductive layer and a first adhesive, wherein the post is adjacent to the base, extends above the base in an upward direction and extends through an opening in the first adhesive into an aperture in the conductive layer, 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, the first adhesive is mounted on and extends above the base and is sandwiched between the base and the conductive layer, and the conductive layer is mounted on and extends above the first adhesive and is mechanically attached to the base by the first adhesive; providing a conductive trace that includes a pad, a terminal and a selected portion of the conductive layer; flowing a second adhesive into and downward in a gap that laterally surrounds and is adjacent to the post, thereby contacting the adhesives with one another; solidifying the second adhesive; then mounting a semiconductor device on a heat spreader that includes the post and the base, wherein the semiconductor device overlaps the post and the second adhesive overlaps the conductive trace and does not cover the post and the pad in the upward direction; electrically connecting the semiconductor device to the pad, thereby electrically connecting the semiconductor device to the terminal; and thermally connecting the semiconductor device to the post, thereby thermally connecting the semiconductor device to the base.