Invention Grant
US08427627B2 Lithographic apparatus and methods 有权
平版印刷设备和方法

Lithographic apparatus and methods
Abstract:
A system for cleaning a limited area of a top surface of a substrate table or an object positioned on a top surface of a substrate table is disclosed. The optical system used during normal imaging is adjusted to limit the cross-sectional area of a radiation beam to form a cleaning radiation beam which impinges on the limited area.
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