Patent ID: 7964446

Claim:
A method for manufacturing a semiconductor device comprising: forming a columnar electrode comprising a barrier electrode portion on a semiconductor wafer wherein the base of the columnar electrode is parallel with the top surface of the columnar electrode over a span that extends from a first to a second sidewall of the columnar electrode; flip-chip bonding a second semiconductor chip onto the semiconductor wafer; forming a molding portion on the semiconductor wafer, the molding portion covering and molding the columnar electrode and the second semiconductor chip; grinding or polishing the molding portion and the second semiconductor chip so that an upper face of the barrier electrode and an upper face of the semiconductor chip are exposed wherein the upper face of the barrier electrode and the upper face of the second semiconductor chip are coplanar; and cutting the molding portion and the semiconductor wafer so that a first semiconductor chip is formed where the second semiconductor chip is flip-chip bonded and the columnar electrode is formed.