Patent ID: 8212279

Claim:
A semiconductor chip assembly, comprising: a semiconductor device; an adhesive that includes first and second openings; a heat spreader that includes a thermal post and a base, wherein the thermal post is adjacent to and integral with the base and extends above the base in an upward direction, and the base extends below the thermal post in a downward direction opposite the upward direction, covers the thermal post in the downward direction and extends laterally from the thermal post in lateral directions orthogonal to the upward and downward directions; and a conductive trace that includes a pad, a terminal and a signal post, wherein the signal post extends below the pad and above the terminal and an electrically conductive path between the pad and the terminal includes the signal post; wherein a cavity is defined by and laterally surrounded by the heat spreader, extends into the thermal post and the first opening, faces in the upward direction and is covered by the base in the downward direction; wherein the semiconductor device is mounted on the heat spreader, extends into the cavity and is covered by the cavity in the downward direction, is electrically connected to the pad and thereby electrically connected to the terminal, and is thermally connected to the thermal post and the base; wherein the adhesive is mounted on and extends above the base, is located outside the cavity, extends laterally from the thermal post to or beyond the terminal and is sandwiched between the base and the pad; wherein the conductive trace is located outside the cavity; and wherein the thermal post extends into the first opening, the signal post extends into the second opening, the posts are the same metallic material and have the same thickness and are coplanar with one another, and the base and the terminal are the same metallic material and have the same thickness and are coplanar with one another.