Legacy nodes (known in the industry as “mature” nodes) remain in use after they’re no longer cutting edge. Each run teaches lessons learned for improving yield or performance, so there’s still room for improvement after mass production starts happening.
Wow, I didn’t know that the quality of a process changes with time.
Legacy nodes (known in the industry as “mature” nodes) remain in use after they’re no longer cutting edge. Each run teaches lessons learned for improving yield or performance, so there’s still room for improvement after mass production starts happening.