Below is an English-language classification table for inspection and measurement equipment in wafer manufacturing, categorized by function and application:
Classification Table for Wafer Manufacturing Inspection & Measurement Equipment
| Category | Subcategory | Equipment Examples | Key Applications |
|---|---|---|---|
| 1. Metrology (Measurement) | 1.1 Dimensional Metrology | - CD-SEM (Critical Dimension Scanning Electron Microscope) - AFM (Atomic Force Microscope) - Optical Profilometer | - Linewidth measurement - Film thickness measurement - Surface roughness analysis |
| 1.2 Film Metrology | - Ellipsometer - X-Ray Fluorescence (XRF) - Four-Point Probe | - Film thickness - Doping concentration - Electrical resistivity | |
| 1.3 Overlay Metrology | - Overlay Alignment Tools - Scatterometry | - Overlay accuracy between lithography layers - Registration error detection | |
| 1.4 Stress & Warpage | - Wafer Curvature Measurement System - Stress Analyzer | - Wafer bow/warp measurement - Residual stress analysis | |
| 2. Inspection (Defect Detection) | 2.1 Patterned Wafer Inspection | - Bright-Field/Dark-Field Inspection Systems - E-Beam Inspection | - Defect detection on patterned wafers - Particle, scratch, and void detection |
| 2.2 Non-Patterned Wafer Inspection | - Surface Scan Inspection Systems - Laser Scattering Tools | - Particle detection on blank wafers - Surface contamination analysis | |
| 2.3 Reticle/Mask Inspection | - Actinic Inspection Tools - AIMS (Aerial Image Measurement System) | - Photomask defect detection - EUV mask inspection | |
| 2.4 Automated Optical Inspection (AOI) | - AOI Systems for Wafer Sorting - Macro Inspection Tools | - High-throughput defect screening - Automated classification of defects | |
| 3. Electrical Testing | 3.1 Wafer Acceptance Test (WAT) | - Probe Card Systems - Parametric Testers | - Electrical parameter testing (e.g., Vt, Id, Gm) - Process control monitoring |
| 3.2 Inline Process Control | - Real-Time Electrical Testers - Inline Defect Scanners | - In-line monitoring of electrical performance - Yield enhancement | |
| 4. Advanced Characterization | 4.1 Electron Microscopy | - SEM (Scanning Electron Microscope) - TEM (Transmission Electron Microscope) | - High-resolution defect imaging - Cross-sectional analysis |
| 4.2 Spectroscopy | - XPS (X-Ray Photoelectron Spectroscopy) - SIMS (Secondary Ion Mass Spectrometry) | - Chemical composition analysis - Doping profile measurement | |
| 5. Automation & Handling | 5.1 Wafer Sorting & Mapping | - Wafer Sorting Systems - Defect Mapping Tools | - Automated wafer handling - Defect coordinate mapping |
| 5.2 Robotics & Load Ports | - Wafer Loaders - EFEM (Equipment Front End Module) | - High-throughput wafer transfer - Factory automation integration |
Key Notes:
- Metrology focuses on precise measurements of physical and electrical parameters.
- Inspection emphasizes defect detection and classification.
- Electrical Testing verifies functional performance before packaging.
- Advanced Characterization provides deep-dive analysis for failure analysis and R&D.
- Automation & Handling ensures efficient and contamination-free wafer processing.
This classification table reflects the latest trends in semiconductor manufacturing, including EUV lithography, 3D IC integration, and advanced packaging technologies.
