发明授权
- 专利标题: Arrangement for generating EUV radiation
- 专利标题(中): 产生EUV辐射的安排
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申请号: US12254272申请日: 2008-10-20
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公开(公告)号: US09170505B2公开(公告)日: 2015-10-27
- 发明人: Vladimir Korobochko , Juergen Kleinschmidt
- 申请人: Vladimir Korobochko , Juergen Kleinschmidt
- 申请人地址: JP Tokyo
- 专利权人: USHIO Denki Kabushiki Kaisha
- 当前专利权人: USHIO Denki Kabushiki Kaisha
- 当前专利权人地址: JP Tokyo
- 代理机构: Patent International, P.C.
- 优先权: DE102007051295 20071022
- 主分类号: H05G2/00
- IPC分类号: H05G2/00 ; G03F7/20
摘要:
The invention is directed to an arrangement for generating EUV radiation particularly for source modules in exposure installations for EUV lithography for semiconductor chip fabrication. The object of the invention, to find a novel possibility for realizing an EUV source module which appreciably improves the ratio of resources to results in the transfer of radiation from the primary source location (plasma 3) to the secondary source location (output opening (6) of the source module (1)/intermediate focus plane (62)), is met according to the invention in that the plasma (3) is formed as a volume emitter for direct illumination of the output opening (6) without collector optics (5), and the transverse dimension (d) of the plasma (3) is greater than the diameter (D) of the output opening (6), wherein the extent to which the diameter is exceeded depends on the distance (L) between the plasma (3) and the output opening (6) and on the numerical aperture (NA) of the illumination system downstream.
公开/授权文献
- US20090101850A1 ARRANGEMENT FOR GENERATING EUV RADIATION 公开/授权日:2009-04-23
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