| 摘要 |
A stackable three-dimensional multi-chip module (MCM) (59) can be manufactured where one chip carrier (42) is interconnected to another chip carrier (48) by solder joints (29). The top chip carrier (42) has solder balls (23) on a lower surface of the substrate (46). The lower chip carrier (48) has solder balls (16) on a top surface of the substrate (52) and solder balls (15) on a lower surface. A lid (60) can be used to seal a device (50), and the lid height would serve as a natural positive stand-off between the level of carriers, giving rise to hour glass shaped solder joints (29) which maximizes the fatigue life of the joints. Heat sinks to further enhance heat dissipation of the MCM can be easily accommodated in this stacking approach. Furthermore, each substrate is capable of carrying multiple chips, so the module incorporates planar chip density growth concurrently with the three-dimensional growth. <IMAGE> |
