Patent ID: 8535985

Claim:
A method of making a semiconductor chip assembly, comprising: providing a bump, a ledge, an adhesive and a conductive layer, wherein the bump is adjacent to and integral with the ledge, extends vertically from the ledge in a first vertical direction, extends into an opening in the adhesive and is aligned with an aperture in the conductive layer, the ledge extends laterally from the bump in lateral directions orthogonal to the first vertical direction, a cavity in the bump faces in a second vertical direction opposite the first vertical direction and is covered by the bump in the first vertical direction, the adhesive is mounted on the ledge, is sandwiched between the ledge and the conductive layer and is non-solidified, and the conductive layer is mounted on the adhesive; then flowing the adhesive in the first vertical direction into a gap located in the aperture between the bump 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; then mounting a semiconductor device on the bump, wherein a heat spreader includes the bump and a base, the bump is adjacent to the base and extends vertically from the base in the first vertical direction, the base includes a portion of the ledge that is adjacent to and integral with and extends laterally from the bump and the semiconductor device extends beyond the bump in the first vertical direction, is located outside the cavity and extends laterally within a periphery of 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 bump, thereby thermally connecting the semiconductor device to the base, wherein providing the base includes removing selected portions of the ledge after solidifying the adhesive.