Yield and Cost Modeling for 3D Chip Stack Technologies

It has been shown that stacking a set of known good dice into a 3D chip array may be beneficial in terms of system performance and footprint area. This paper demonstrates that, in the general sense, it is also beneficial to arrange chips into a 3D stack from yield and cost perspectives. It is shown that an optimal point occurs where cost is minimized by stacking an appropriate amount of dice into a single system.