Virtual Metrology
4 pieces tagged Virtual Metrology.
Pieces
imec Says Fabs Can't Measure Every Wafer. So 95% Are Predicted.
In a fab running virtual metrology, only one to five percent of wafers are physically measured. The rest get a number anyway — predicted by a model that reads the process tools rather than the wafer: gas flows, RF power, chamber pressure, roughly a thousand sensor variables per run, turned into a thickness, a line…
Your Fab's AI Goes Blind on the 2nm Node — Here's Why
Your fab's new AI spots defects better than any engineer — and on the brand-new node it goes almost blind. Not because the model is bad, but because every one of these systems learns from history: thousands of wafers, labelled defects, known-good outcomes.
AI Now Lets Chip Fabs "Measure" Wafers They Never Touch (Virtual Metrology)
Chip factories physically measure only about 3 wafers in 100. For the other 97, an AI called virtual metrology predicts the exact dimension straight from the process tool's own sensor "fingerprint" — pressure, power, gas flow, hundreds of signals per wafer — in milliseconds, with no measurement step and no throughput hit.
Chip Factories Only Check 10% of Their Wafers — Here's the AI That Sees the Rest
A modern chip fab physically measures fewer than 1 in 10 wafers — the other 90% ship out never directly checked, because real metrology is slow and a fab runs thousands of wafers a day. In 2026 that changed: AI "virtual metrology" now predicts the quality of the wafers you never measured, straight from the…