Defect printability measurement on the KLA-351: correlation to defect sizing using the AVI metrology system

Peter Fiekowsky, Daniel Selassie, Frank E. Abboud, Brian J. Grenon
1999 19th Annual Symposium on Photomask Technology  
The search for the "holy grail" of a fast, reliable, inexpensive predictor of defect printability has reached a new level. Taking images from several inspection tools and KLA Starlight) during defect review, the AVI Photomask Metrology System provides measurement repeatability better than 5 nm, and significantly better correlation to printability than Scanning Electron Microscope (SEM) measurements. SEM measurements of printed defects are compared to various measurements of the defects on the
more » ... sk. Analysis shows, as expected, that optical area measurements provide the best correlation to printability. Further, images from existing inspection tools are shown to be sufficient to produce these measurements using AVI's new "Flux-area" technique.
doi:10.1117/12.373371 fatcat:qvuqoyoe4jfcfhn62vqevwsclu