LMS IPRO: Enabling local registration measurements for efficient e-beam writer correction

摘要

Mask registration data are presented, which demonstrate local errors that can be correlated to writing swathes of state-of-the-art e-beam writers and multi-pass strategies. A unique measurement methodology, Local Registration Metrology, allows for dense sampling of reticle dies to characterize the local e-beam registration error and enables e-beam corrections via feed forward.