final inspection

**Final inspection** is the **defect check before shipment** — comprehensive inspection after all processing to ensure only good wafers ship to customers, the last line of defense for quality. **What Is Final Inspection?** - **Definition**: Comprehensive defect inspection after processing complete. - **Timing**: After all fabrication steps, before shipment. - **Purpose**: Ensure quality, prevent defective wafers from shipping. **Inspection Coverage**: Visual defects, particle contamination, pattern defects, electrical test correlation. **Why Final Inspection?** - **Quality Assurance**: Last chance to catch defects. - **Customer Protection**: Prevent bad wafers from reaching customers. - **Yield Verification**: Confirm expected yield. - **Liability**: Reduce risk of shipping defective product. **Tools**: Automated optical inspection, e-beam inspection, macro inspection, electrical test correlation. **Applications**: Quality control, customer acceptance, yield verification, defect tracking. Final inspection is **last line of defense** — ensuring only quality wafers ship to customers and protecting brand reputation.