Patent ID: 7939924

Claim:
A stacked BGA package comprising: a first BGA package including a first semiconductor chip and a printed circuit board, the first semiconductor chip positioned to face upward with respect to the printed circuit; a conductive layer disposed on the first semiconductor chip of the first BGA package, the conductive layer including a first solder ball landing pad directly formed on a surface of the first semiconductor chip of the first BGA package and a first conductive pattern connected to the first solder ball landing pad; at least one second BGA package including a second semiconductor chip and being mounted on the first BGA package; a first solder ball attached to a printed circuit board of the second BGA package and connected to the printed circuit board of the first BGA package via the first solder ball landing pad of first conductive layer; and an electrical connection connecting the first conductive pattern to the printed circuit board of the first BGA package.