Invention Grant
- Patent Title: Liquid jet and recovery system for immersion lithography
- Patent Title (中): 用于浸没光刻的液体喷射和回收系统
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Application No.: US11808850Application Date: 2007-06-13
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Publication No.: US07932989B2Publication Date: 2011-04-26
- Inventor: W. Thomas Novak , Andrew J. Hazelton , Douglas C. Watson
- Applicant: W. Thomas Novak , Andrew J. Hazelton , Douglas C. Watson
- Applicant Address: JP Tokyo
- Assignee: Nikon Corporation
- Current Assignee: Nikon Corporation
- Current Assignee Address: JP Tokyo
- Agency: Oliff & Berridge, PLC
- Main IPC: G03B27/52
- IPC: G03B27/52 ; G03B27/42 ; G03B27/58 ; G03B27/32 ; G03C5/00

Abstract:
A liquid jet and recovery system for an immersion lithography apparatus has arrays of nozzles arranged to have their openings located proximal to an exposure region through which an image pattern is projected onto a workpiece such as a wafer. These nozzles are each adapted to serve selectively either as a source nozzle for supplying a fluid into the exposure region or as a recovery nozzle for recovering the fluid from the exposure region. A fluid controlling device functions to cause nozzles on selected one or more sides of the exposure region to serve as source nozzles and to cause nozzles on selected one or more of the remaining sides to serve as recovery nozzles such that a desired flow pattern can be established for the convenience of immersion lithography.
Public/Granted literature
- US07821615B2 Liquid jet and recovery system for immersion lithography Public/Granted day:2010-10-26
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