发明申请
US20130010271A1 APPARATUS AND METHODS FOR RECOVERING FLUID IN IMMERSION LITHOGRAPHY
审中-公开
装置和方法,用于在浸没层析中回收流体
- 专利标题: APPARATUS AND METHODS FOR RECOVERING FLUID IN IMMERSION LITHOGRAPHY
- 专利标题(中): 装置和方法,用于在浸没层析中回收流体
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申请号: US13617251申请日: 2012-09-14
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公开(公告)号: US20130010271A1公开(公告)日: 2013-01-10
- 发明人: Alex Ka Tim POON , Leonard Wai Fung KHO , Derek COON , Gaurav KESWANI
- 申请人: Alex Ka Tim POON , Leonard Wai Fung KHO , Derek COON , Gaurav KESWANI
- 申请人地址: JP Tokyo
- 专利权人: NIKON CORPORATION
- 当前专利权人: NIKON CORPORATION
- 当前专利权人地址: JP Tokyo
- 主分类号: G03B27/52
- IPC分类号: G03B27/52
摘要:
An immersion lithography apparatus includes a projection system having a final optical element, a movable stage that is movable below the projection system such that a gap exists between the final optical element and a surface of the stage, an immersion liquid being filled in the gap, a liquid confinement member and a liquid diverter. The liquid confinement member maintains the immersion liquid in the gap, and includes a liquid recovery portion that faces the stage surface and recovers liquid from the gap. The liquid recovery portion includes a first porous portion through which a first suction force is applied and a second porous portion through which a second suction force less than the first suction force is applied, the second portion being located outward of the first portion. The liquid diverter is positioned between the stage and at least the first porous portion.
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