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US07224437B2 Method for measuring and verifying stepper illumination 有权
步进照明的测量和验证方法

Method for measuring and verifying stepper illumination
摘要:
An apparatus and method for characterizing an illumination pupil of an exposure tool comprises forming a plurality of pinhole test patterns at a plurality of test site locations to facilitate locating test pattern edges for extracting therefrom the illumination pupil characteristics of the exposure tool.
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