Invention Grant
US08854599B2 Liquid recovery apparatus, exposure apparatus, exposure method, and device manufacturing method 有权
液体回收装置,曝光装置,曝光方法及装置制造方法

Liquid recovery apparatus, exposure apparatus, exposure method, and device manufacturing method
Abstract:
An exposure apparatus exposes a substrate by projecting an image of a pattern onto the substrate via a projection optical system and a liquid that fills a space between the projection optical system and the substrate. The exposure apparatus has a liquid supply system having a supply path that supplies liquid to the space between the projection optical system and the substrate. A liquid recovery system having a recovery path recovers the liquid from the space during the exposure. The apparatus also includes a suction path with which at least part of the supply path of the liquid supply system is connected when the exposure apparatus functions abnormally.
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