A full-field dynamic monitor method for pellicle membrane and a full-field dynamic monitor system
A global dynamic detection method for a pellicle membrane (122) of a photomask includes: causing the pellicle membrane (122) to undergo broadband oscillation; applying a broadband signal to the pellicle membrane (122) undergoing multi-frequency oscillation; transforming an optical time-domain signal...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | A global dynamic detection method for a pellicle membrane (122) of a photomask includes: causing the pellicle membrane (122) to undergo broadband oscillation; applying a broadband signal to the pellicle membrane (122) undergoing multi-frequency oscillation; transforming an optical time-domain signal reflecting off the pellicle membrane (122) to obtain a frequency spectrum with multiple resonance frequencies; and detecting the pellicle membrane (122) with the frequency spectrum comprehensively to ensure the quality of the pellicle membrane. A global dynamic detection system for use with the global dynamic detection method is further provided. |
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