Solutions — Wafer Inspection

Full-wafer surface inspection. Every die. Every shift.

Computer vision defect detection across the complete 300mm die map. Particle, scratch, crystal defect, and edge chip classification at 120 wafers/hour with third-shift parity guarantee.

WAFER-ID: W-29A-0471 300mm — 7nm Logic — Lot 2247 Pass Defect SCAN
<0.1%
False Positive Rate
120
Wafers / Hour
300mm
Full-Wafer Coverage
100%
Shift Parity
Coverage

Every die, every layer, every shift

Human visual inspection at 100% die coverage is economically impractical at 120 wafers/hour. Statistical sampling misses localized process excursions — a scratch defect cluster covering 20 die in one quadrant will be statistically invisible in a 5% random sample.

Lenspathio captures and classifies every die on every wafer. Defect density maps are generated at lot completion and available via SECS/GEM S6F11 push or local dashboard.

View Defect Classification Detail
WAFER MAP — W-29A-0471 / 7nm Logic
1024 die 3 defect clusters
Third-Shift Parity

Detection performance doesn't degrade overnight

Human inspection degrades measurably on overnight shifts — fatigue reduces detection sensitivity and increases missed defects by 40–70% versus first-shift baseline in controlled studies. Lenspathio maintains consistent sensitivity regardless of shift.

First Shift (Human)

1.8% escape rate

Baseline performance under optimal conditions. Engineers alert, lighting consistent.

Third Shift (Human)

3.9% escape rate

117% degradation from first-shift baseline. Fatigue, shift handoff, reduced ambient alertness.

Any Shift (Lenspathio)

0.07–0.09% escape rate

Consistent across all three shifts. Detection sensitivity identical at 3am and 9am.

Evaluate full-wafer inspection on your process

We run evaluations on customer-provided wafer sets with your process recipes. Blind classification compared against your gold standard defect map.