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US08749756B2 Lithographic apparatus and device manufacturing method 有权
平版印刷设备和器件制造方法

Lithographic apparatus and device manufacturing method
摘要:
A lithographic apparatus is arranged to project a pattern from a patterning device onto a substrate is disclosed. The lithographic apparatus includes an illumination system and an outlet connected to a pumping system to pump away gas from between an inner wall and outer wall of the illumination system or, if a radiation source is present, between the inner wall of the illumination system and an inner wall of the radiation source.
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