Apparatus and method for pattern inspection

A pattern inspection apparatus includes a light source, a stage configured to mount thereon a substrate with a pattern formed thereon, a first laser measuring unit configured to measure a position of the stage by using a laser beam, a sensor configured to capture a pattern image obtained from the pa...

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Bibliographische Detailangaben
1. Verfasser:	TAMAMUSHI SHUICHI
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS SPECIALLY ADAPTED THEREFOR BASIC ELECTRIC ELEMENTS CALCULATING CINEMATOGRAPHY COMPUTING COUNTING ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY ELECTROGRAPHY HANDLING RECORD CARRIERS HOLOGRAPHY INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MATERIALS THEREFOR MEASURING ORIGINALS THEREFOR PHOTOGRAPHY PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES,e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTORDEVICES PHYSICS PRESENTATION OF DATA RECOGNITION OF DATA RECORD CARRIERS SEMICONDUCTOR DEVICES TESTING
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Beschreibung
Zusammenfassung:	A pattern inspection apparatus includes a light source, a stage configured to mount thereon a substrate with a pattern formed thereon, a first laser measuring unit configured to measure a position of the stage by using a laser beam, a sensor configured to capture a pattern image obtained from the pattern, formed on the substrate, irradiated by light from the light source, an optical system configured to focus the pattern image on the sensor, a second laser measuring unit configured to measure a position of the optical system by using a laser beam, a correction unit configured to correct a captured pattern image by using a difference between the position of the stage and the position of the optical system, and an inspection unit configured to inspect whether there is a defect of the pattern by using a corrected pattern image.