发明名称 |
Stationary exit window for X-ray lithography beamline |
摘要 |
A stationary exit window for an X-ray lithography beamline having a shape and thickness such that the exit window can withstand a pressure differential of 14.7 psi and allows an X-ray beam as passed through the window to have X-rays above and below a desired energy band substantially attenuated. The exit window includes a thin material having a window section disposed within an opening of a frame. The window section has a cylindrical sector shape to capitalize on the pressure load bearing ability of hoop stress to keep the thin material from tearing apart. A method of scanning the X-ray beam through a stationary exit window and onto an exposure field on a wafer is also disclosed.
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申请公布号 |
US5627872(A) |
申请公布日期 |
1997.05.06 |
申请号 |
US19950383268 |
申请日期 |
1995.02.03 |
申请人 |
NORTHROP GRUMMAN CORPORATION |
发明人 |
VERGA, JOHN |
分类号 |
G03F7/20;G21K5/04;H01J5/18;(IPC1-7):G21K1/00 |
主分类号 |
G03F7/20 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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