Surfscan SP 1 TBI Particle Defect

Particle defect inspection systems examine wafer surfaces for contamination and other light-scattering defects. Particle defect inspection systems are used in semiconductor manufacturing to monitor wafer cleanliness and defectivity without performing a patterning or material-removal step. Particle defect inspection tools belong to the metrology and inspection part of the fab flow and provide information for process control and yield monitoring.

Particle defect inspection systems direct light onto a wafer surface and detect scattered or reflected signals associated with particles and other surface anomalies. Particle defect inspection systems generally scan the wafer in a controlled motion so the tool can map defect events across the surface. Particle defect inspection systems typically produce inspection results that can be reviewed for defect location and overall wafer condition.

Particle defect inspection systems are used around wafer processing steps where added contamination or surface defectivity can affect downstream yield. Particle defect inspection systems can be placed after cleaning, deposition, etch, polish, or other surface-sensitive operations to check whether a wafer remains within defectivity targets. Particle defect inspection systems feed excursion control and disposition decisions rather than changing the wafer directly.

Particle defect inspection systems are applied to monitor wafer surface cleanliness, defect trends, and process stability. Particle defect inspection systems are used for line monitoring, engineering checks, and excursion investigation in semiconductor manufacturing. Particle defect inspection systems are relevant where particles, haze, or other surface anomalies can interfere with later lithography, film formation, etch behavior, or electrical performance.