Invention Grant
- Patent Title: Reducing contamination in immersion lithography
- Patent Title (中): 降低浸渍光刻中的污染
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Application No.: US12182278Application Date: 2008-07-30
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Publication No.: US07782445B2Publication Date: 2010-08-24
- Inventor: Dmitriy Shneyder , Raschid J. Bezama , Dario L. Goldfarb , Kafal Lai
- Applicant: Dmitriy Shneyder , Raschid J. Bezama , Dario L. Goldfarb , Kafal Lai
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Cantor Colburn LLP
- Agent Wenjie Li
- Main IPC: G03B27/58
- IPC: G03B27/58

Abstract:
A wafer chuck assembly includes a first chuck section configured to hold a semiconductor wafer on a support surface thereof, and a second chuck section removably attached to the first chuck section. The first chuck section has a gap therein, the gap located adjacent an outer edge of the wafer, and the gap containing a volume of immersion lithography fluid therein. A fluid circulation path is configured within the first chuck section so as to facilitate the radial outward movement of the immersion lithography fluid in the gap, thereby maintaining a meniscus of the immersion lithography fluid at a selected height with respect to a top surface of the semiconductor wafer.
Public/Granted literature
- US20080284993A1 REDUCING CONTAMINATION IN IMMERSION LITHOGRAPHY Public/Granted day:2008-11-20
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