BH 2 UMA

Microscopes used for metrology and inspection provide magnified visual examination of wafers, masks, packaged parts, and related specimens. Metrology and inspection microscopes are commonly used to review surface condition, pattern quality, alignment features, contamination, and visible defects during process development, production monitoring, and failure analysis.

A metrology and inspection microscope forms an enlarged optical image of a specimen through objective optics and an observation path for an operator. A microscope of this class is typically used by placing the specimen on a stage, bringing the area of interest into focus, and examining features under suitable illumination and magnification. A metrology and inspection microscope can also support comparative observation of recurring structures and visible defect signatures across a specimen.

A metrology and inspection microscope is generally used outside the direct patterning or deposition step itself and serves as an observation and verification tool around many process stages. A metrology and inspection microscope commonly appears after lithography, etch, deposition, cleaning, dicing, packaging, or rework when operators need visual confirmation of feature condition or defect presence. A metrology and inspection microscope can also be used before subsequent processing to decide whether a specimen should continue in flow, be reworked, or be sent for deeper analysis.

Metrology and inspection microscopes are used for visual review of patterned wafers, reticles, substrates, and assembled microelectronic parts. Metrology and inspection microscopes are also used to examine scratches, particles, residue, edge condition, line quality, contact openings, and other visible process results. In laboratory and production environments, a metrology and inspection microscope supports engineering review, process troubleshooting, incoming inspection, and failure analysis preparation.