Invention Grant
- Patent Title: Reflection type photomask blank, manufacturing method thereof, reflection type photomask, and manufacturing method of semiconductor device
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Application No.: US12232757Application Date: 2008-09-23
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Publication No.: US08394558B2Publication Date: 2013-03-12
- Inventor: Tadashi Matsuo , Koichiro Kanayama , Shinpei Tamura
- Applicant: Tadashi Matsuo , Koichiro Kanayama , Shinpei Tamura
- Applicant Address: JP Tokyo
- Assignee: Toppan Printing Co., Ltd.
- Current Assignee: Toppan Printing Co., Ltd.
- Current Assignee Address: JP Tokyo
- Priority: JPP2006-093304 20060330; JPP2006-251160 20060915
- Main IPC: G03F1/08
- IPC: G03F1/08 ; H01L21/02

Abstract:
A reflection type photomask blank includes: a substrate; a multilayer reflection film formed on the substrate for reflecting exposure light; a protection film formed on the multilayer reflection film for protecting the multilayer reflection film; an absorber layer for absorbing the exposure light on the protection film; and a shock absorbing film formed between the absorber layer and the protection film, with a resistance to etching which is performed when an exposure transfer pattern of the absorber layer is formed, in which the protection film is: a compound including Zr and Si; a compound including Zr, Si, and at least either one of O and N; or a single element or a compound including at least any one of Ru, C, and Y.
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