Patent ID: 7939375

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; providing a conductive trace that includes a pad, a terminal and a selected portion of the conductive layer; etching the post, thereby forming a cavity in the post that faces in the upward direction; then mounting a semiconductor device on the post, wherein a heat spreader includes the post and the base and the semiconductor device extends into the cavity; 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.