Invention Grant
- Patent Title: Blank for mold production and method for manufacturing mold
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Application No.: US15235461Application Date: 2016-08-12
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Publication No.: US10040220B2Publication Date: 2018-08-07
- Inventor: Souichi Fukaya , Hideo Nakagawa , Kouhei Sasamoto
- Applicant: Shin-Etsu Chemical Co., Ltd.
- Applicant Address: JP Tokyo
- Assignee: SHIN-ETSU CHEMICAL CO., LTD.
- Current Assignee: SHIN-ETSU CHEMICAL CO., LTD.
- Current Assignee Address: JP Tokyo
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2012-112520 20120516
- Main IPC: C03C15/00
- IPC: C03C15/00 ; B29C33/38 ; G03F1/48 ; G03F1/54 ; C03C17/23 ; C03C17/00 ; G03F1/50 ; G03F1/26 ; G03F1/24 ; C03C17/36 ; G03F7/00 ; B82Y10/00 ; B82Y40/00 ; C04B35/58 ; C04B35/12 ; C04B35/105 ; C04B35/56 ; C04B35/047

Abstract:
A hard mask film 2 provided on substrate 1 is formed by tin-containing chromium-containing material. In the chromium-containing material including tin, which forms the hard mask film 2, the etching resistance to fluorine-containing dry etching is equal to or higher than the etching resistance of the tin-free chromium-containing material, and it shows a significantly high etching rate as compared with a chromium-containing material free of tin under conditions for chlorine-containing dry etching. As a result, the time for chlorine-containing dry etching is shortened, and damage to a resist pattern is reduced. Thus, high-precision pattern transfer can be performed. The present invention provides a novel technique for increasing etching process-ability by increasing a dry-etching rate of a hard mask film made of a chromium-containing material while assuring a hard mask function of the hard mask film.
Public/Granted literature
- US20160346960A1 BLANK FOR MOLD PRODUCTION AND METHOD FOR MANUFACTURING MOLD Public/Granted day:2016-12-01
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