Patent ID: 7528011

Claim:
A method of manufacturing a semiconductor device in which at least first and second semiconductor chips are stacked on a substrate in this order so that the first semiconductor chip is located adjacent the substrate and is between the substrate and the second semiconductor chip, and so that the first and second semiconductor chips are adjacent one another, said method comprising: connecting a first wire to an upper side of the first semiconductor chip via ball bonding to a bonding pad, and thereafter bonding the first wire to the substrate so that the first wire connecting the first semiconductor chip to the substrate is formed via a forward bonding technique; and connecting a second wire to the substrate via ball bonding to a bonding pad on the substrate, and thereafter bonding the second wire to an upper side of the second semiconductor chip so that the second wire connecting the second semiconductor chip to the substrate is formed via a reverse bonding technique and extends over the first wire when viewed from a side view.