Invention Grant
- Patent Title: Pellicle and method for manufacturing the same
- Patent Title (中): 薄膜及其制造方法
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Application No.: US12251582Application Date: 2008-10-15
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Publication No.: US07901846B2Publication Date: 2011-03-08
- Inventor: Yoshihiro Kubota , Shoji Akiyama , Toshihiko Shindoo
- Applicant: Yoshihiro Kubota , Shoji Akiyama , Toshihiko Shindoo
- Applicant Address: JP Tokyo
- Assignee: Shin-Etsu Chemical Co., Ltd.
- Current Assignee: Shin-Etsu Chemical Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2007-270843 20071018; JP2007-293692 20071112
- Main IPC: G03F1/00
- IPC: G03F1/00 ; A47G1/12

Abstract:
A pellicle of the present invention is provided with a silicon crystal film, the absorption coefficient of which is 0.005/nm or lower with respect to light having a wavelength of 13.5 nm, as a pellicle film. The silicon crystal film is an indirect transition type semiconductor film and, therefore, the optical absorption coefficient thereof is relatively low. In particular, a single-crystal silicon film has a lower absorption coefficient than an amorphous silicon film and a polysilicon film. Thus, it is easy to obtain desired transmissivity required of a pellicle film for EUV from the single-crystal silicon film. Such a pellicle film as described above can be fabricated from an SOI film obtained by thin-filming an SOI substrate (including an SOQ substrate and an SOG substrate).
Public/Granted literature
- US20090104544A1 PELLICLE AND METHOD FOR MANUFACTURING THE SAME Public/Granted day:2009-04-23
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