Patent ID: 6852571

Claim:
A method of manufacturing a stacked semiconductor device in which a plurality of semiconductor device bodies each having a predetermined function are stacked on a main surface of a substrate, comprising the steps of: forming a semiconductor device body on a main surface of a substrate; forming a plurality of electrodes to be electrically connected to said semiconductor device body on the surface of portions in said substrate positioned around said semiconductor device body; supplying a solder ball of a predetermined size to each of said plurality of electrodes; preparing another semiconductor device body having a plurality of external leads to be bonded to said plurality of electrodes; supplying flux to either said plurality of external leads of said another semiconductor device body or said plurality of electrodes; after said flux is supplied, disposing said another semiconductor device body on said semiconductor device body and making each of said plurality of electrodes to which said solder balls are supplied come into contact with each of said plurality of corresponding external leads; and performing predetermined heat treatment in a state where said plurality of electrodes and said plurality of external leads are in contact with each other to melt said solder balls, thereby bonding each of said plurality of electrodes with each of said plurality of electrodes.