Invention Grant
US07948603B2 Vacuum device, operation method for vacuum device, exposure system, and operation method for exposure system 有权
真空装置,真空装置的操作方法,曝光系统和曝光系统的操作方法

  • Patent Title: Vacuum device, operation method for vacuum device, exposure system, and operation method for exposure system
  • Patent Title (中): 真空装置,真空装置的操作方法,曝光系统和曝光系统的操作方法
  • Application No.: US10569167
    Application Date: 2004-08-17
  • Publication No.: US07948603B2
    Publication Date: 2011-05-24
  • Inventor: Keiichi Tanaka
  • Applicant: Keiichi Tanaka
  • Applicant Address: JP Tokyo
  • Assignee: Nikon Corporation
  • Current Assignee: Nikon Corporation
  • Current Assignee Address: JP Tokyo
  • Agency: Holtz, Holtz, Goodman & Chick, PC
  • Priority: JP2003-302780 20030827; JP2004-016646 20040126
  • International Application: PCT/JP2004/012130 WO 20040817
  • International Announcement: WO2005/022613 WO 20050310
  • Main IPC: G03B27/52
  • IPC: G03B27/52
Vacuum device, operation method for vacuum device, exposure system, and operation method for exposure system
Abstract:
The exposure apparatus 100 comprises a double shell structure which has an upper vacuum chamber 140 on the outside of the reticle chamber 135, and a lower vacuum chamber 160 on the outside of the wafer chamber 155. A cryo pump CP and a turbo molecular pump TMP/dry pump DP are connected in parallel to each of the chambers, i.e., the reticle chamber 135 and wafer chamber 155. During exposure operation and alignment of the exposure apparatus 100, only the cryo pump CP (vibration-free type vacuum pump) is operated; the turbo molecular pump TMP/dry pump DP (vibrating type vacuum pump) is stopped. As a result, it is possible to cut off the transmission of vibration from the vibrating type vacuum pump during exposure operation and alignment of the exposure apparatus, so that the precision of the stage devices 137 and 157 can be ensured to a much greater degree; accordingly, deterioration of the exposure performance can be reduced to a much greater extent.
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