Patent ID: 8890294

Claim:
A stack semiconductor package comprising: a first semiconductor device having a first electrode pad at an active face thereof; a board mold covering the first semiconductor device; a first conductive plug connected to first and second contact units, wherein the first conductive plug penetrates the board mold and the first and the second contact units are disposed at first and second faces of the board mold respectively, wherein the first face is opposite to the second face and the active face of the first semiconductor device; a second conductive plug disposed in the board mold and connected to the first electrode pad; a second semiconductor device arranged on the first face of the board mold and having a second electrode pad making contact with the first contact unit through an interconnection; and a sealing member disposed on the board mold, covering the second semiconductor device, wherein the first conductive plug includes a shape of a trapezoid, and wherein the second conductive plug includes an inverted shape of the first conductive plug in a cross-sectional view.