Lithographic apparatus, device manufacturing method, and device manufactured thereby
1. Field of the Invention A lithographic projection apparatus comprises a vacuum chamber having a wall enclosing at least one of first and second object tables, the or each object table within the vacuum chamber being connected to positioning means for positioning the object table with respect to a...
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Main Authors | , , , , , |
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Format | Patent |
Language | English |
Published |
22.07.2003
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Online Access | Get full text |
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Abstract | 1. Field of the Invention
A lithographic projection apparatus comprises a vacuum chamber having a wall enclosing at least one of first and second object tables, the or each object table within the vacuum chamber being connected to positioning means for positioning the object table with respect to a projection system of the apparatus. The positioning means is provided with a pneumatic gravity compensator comprising a piston associated with the object table; a gas-filled pressure chamber, the gas in the pressure chamber acting on the movable member to at least partially counteract the weight of the object table; a gas bearing; and evacuating means for evacuating gas escaping through a gap between the movable member and a bearing surface of a cylindrical housing towards the vacuum chamber. A partially flexible rod connects the piston to the object table. |
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AbstractList | 1. Field of the Invention
A lithographic projection apparatus comprises a vacuum chamber having a wall enclosing at least one of first and second object tables, the or each object table within the vacuum chamber being connected to positioning means for positioning the object table with respect to a projection system of the apparatus. The positioning means is provided with a pneumatic gravity compensator comprising a piston associated with the object table; a gas-filled pressure chamber, the gas in the pressure chamber acting on the movable member to at least partially counteract the weight of the object table; a gas bearing; and evacuating means for evacuating gas escaping through a gap between the movable member and a bearing surface of a cylindrical housing towards the vacuum chamber. A partially flexible rod connects the piston to the object table. |
Author | Bisschops, Theo H. J Janssen, Eric W. A Renkens, Marcel J. M Tabor, Rob Schneider, Ronald M Vijfvinkel, Jakob |
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References | Young et al. (4818838) 19890400 Loopstra et al. (6226075) 20010500 (0973067) 20000100 Franken et al. (5150153) 19920900 Nelson (5523193) 19960600 Korenaga et al. (5467720) 19951100 Yamane et al. (5858587) 19990100 Hanzawa (5986743) 19991100 Hellriegel (4349244) 19820900 Mumola (5229872) 19930700 Abdelmalek (5337560) 19940800 (WO 96/38766) 19961200 Osanai (5376988) 19941200 Osanai et al. (5864389) 19990100 Loopstra et al. (6337484) 20020100 Van Der Werf et al. (6046792) 20000400 Bouwer et al. (5204712) 19930400 Vogt et al. (5296891) 19940300 Yabu (4907021) 19900300 |
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Snippet | 1. Field of the Invention
A lithographic projection apparatus comprises a vacuum chamber having a wall enclosing at least one of first and second object... |
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Title | Lithographic apparatus, device manufacturing method, and device manufactured thereby |
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