Fab buildings are getting more and more expensive. The lifespan of these valuable properties are measured in decades rather than years.
Increasing wafer sizes has long been an essential tool for increasing a Fab’s manufacturing efficiency. Yield, shrink and manufacturing efficiency were always further measures.
The time will come when the biggest potential in increasing manufacturing efficiency is once again increasing the wafer size. That time will very definitely be within the lifetime of many fabs being designed or built today.
Even if it still sounds very much like the future, modern fab buildings should be “450mm ready”.
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