概要（Overview）

The AIT In-line Defect Inspection System is a high-throughput system that uses proprietary double-darkfield (DDF) laser scanning technology to detect defects, microscratches, and particulate contamination on wafers. It can inspect up to 30 wafers per hour at maximum sensitivity and has a low cost-per-inspection, making it economically feasible to perform in-line process monitoring at more process levels. The system achieves exceptional defect sensitivity through innovations such as a reduced laser spot size and a unique double-darkfield laser scattering design.