Definition
An electron-beam defect review or inspection system scans selected wafer locations with a focused electron beam, detects emitted signals, and produces high-resolution images and classifications that connect inspection candidates to physical defect evidence.
Process position
Inputs
- Wafer and defect coordinates
- Review recipe
- Inspection map
- Classification taxonomy
Outputs
- High-resolution defect images
- Classification labels
- Defect mechanism evidence
How it works
- 01Load and align wafer
- 02Navigate to candidate coordinates
- 03Optimize beam and imaging condition
- 04Acquire images or scan area
- 05Classify and correlate results
Role in the production flow
E-beam review adds morphological evidence to faster inspection signals and can reveal smaller features, but its throughput and possible beam interaction usually require targeted sampling rather than blanket substitution for optical inspection.
A scanning electron-beam system used to image, classify, and sometimes detect wafer defects at higher spatial resolution than production optical inspection.
Boundary: The cited manufacturers document the equipment category and its intended uses; this record does not independently validate vendor performance claims or rank products.
Qualification and production boundaries
A review flow must define coordinate accuracy, target defect types, landing conditions, charging mitigation, acceptable beam interaction, image and classification standards, sampling rules, and correlation back to process history.
A review flow must define coordinate accuracy, target defect types, landing conditions, charging mitigation, acceptable beam interaction, image and classification standards, sampling rules, and correlation back to process history.
Boundary: Actual acceptance limits, recipes, throughput, availability, and ownership economics are product-, process-, site-, and contract-specific.
Sources
Citations support the tagged claims above. Access dates record when Maha Strategies last checked the public source.
- [1]Annual Report: Process Control and Yield Management · KLA · 2024 · accessed 2026-08-13
- [2]Annual Report: Inspection, Metrology, and Yield Analysis · KLA · 2019 · accessed 2026-08-13