Patent ID: 8148207

Claim:
A method of making a semiconductor chip assembly, comprising: providing a post, a base, an adhesive and a conductive layer, wherein the post is adjacent to the base, extends above the base in an upward direction, extends into an opening in the adhesive and is aligned with 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 adhesive is mounted on and extends above the base, is sandwiched between the base and the conductive layer and is non-solidified, and the conductive layer is mounted on and extends above the adhesive; then flowing the adhesive into and upward in a gap located in the aperture between the post and the conductive layer; solidifying the adhesive; then providing a conductive trace that includes a pad, a terminal and a selected portion of the conductive layer; providing a cap on the post that extends above and is adjacent to and covers in the upward direction and extends laterally in the lateral directions from a top of the post and that is metallurgically bonded to the post and overlaps and is adjacent to the adhesive, wherein providing the cap includes providing an etch mask that defines the cap; then mounting a semiconductor device on the cap using a thermally conductive connection media that contacts the cap and is spaced from the post, wherein a heat spreader includes the post, the base and the cap and the semiconductor device overlaps the post; 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 cap, thereby thermally connecting the semiconductor device to the base.