Patent ID: 8354688

Claim:
A semiconductor chip assembly, comprising: a semiconductor device; a first adhesive that includes a first opening; a second adhesive that includes a second opening; a conductive trace that includes a pad and a terminal; and a heat spreader that includes a bump, a base and a ledge, wherein (i) the bump is adjacent to the base and the ledge, is integral with the ledge, extends from the base in a first vertical direction and extends from the ledge in a second vertical direction opposite the first vertical direction, (ii) the base covers the bump in the second vertical direction and extends laterally from the bump in lateral directions orthogonal to the vertical directions, (iii) the ledge extends laterally from the bump and is spaced from the base, and (iv) a cavity in the bump faces in the first vertical direction, is covered by the bump in the second vertical direction and is spaced from the base by the bump; wherein the semiconductor device is mounted on the bump, extends into the cavity, is electrically connected to the pad and thereby electrically connected to the terminal, and is thermally connected to the bump and thereby thermally connected to the base; wherein the first adhesive contacts the bump, the base and the ledge, is sandwiched between the base and the ledge and extends laterally from the bump to or beyond the terminal; wherein the second adhesive is spaced from the bump, is sandwiched between the conductive trace and the ledge, extends beyond the ledge and the first adhesive in the first vertical direction and extends beyond the conductive trace in the second vertical direction; wherein the conductive trace is located outside the cavity and beyond the ledge in the first vertical direction; wherein the bump extends into the first opening, is aligned with and spaced from the second opening and covers the semiconductor device in the second vertical direction; wherein the ledge is sandwiched between the adhesives and covers the conductive trace in the second vertical direction; and wherein the cavity extends into the first opening and is aligned with and spaced from the second opening.