Title:
DIE, PROCESS FOR PRODUCING DIE, AND PROCESS FOR PRODUCING ANTIREFLECTION FILM
Document Type and Number:
WIPO Patent Application WO/2011/125486
Kind Code:
A1
Abstract:
Provided is a process for producing a die having a porous alumina layer on the surface thereof, the process being effective in inhibiting the formation of pits (depressions). The process for producing a die for moth-eye structure formation is a process for producing a die which has a porous alumina layer (14) as the surface thereof. The process comprises: the step of preparing a die base (10) which comprises an aluminum base (12) and, deposited on a surface of the aluminum base (12), an aluminum film (18) having a purity of 99.99 mass% or higher; the step of anodizing the surface (18s) of the aluminum film (18) to thereby form a porous alumina layer (14) having a plurality of fine recesses (14p); and the step of bringing the porous alumina layer (14) into contact with an etchant to enlarge the plurality of fine recesses (14p) of the porous alumina layer (14).
Inventors:
MINOURA Kiyoshi (())
箕浦 潔 (())
ISURUGI Akinobu (())
石動 彰信 (())
IHARA Ichirou (())
箕浦 潔 (())
ISURUGI Akinobu (())
石動 彰信 (())
IHARA Ichirou (())
Application Number:
JP2011/056832
Publication Date:
October 13, 2011
Filing Date:
March 22, 2011
Export Citation:
Assignee:
SHARP KABUSHIKI KAISHA (22-22, Nagaike-cho Abeno-ku, Osaka-sh, Osaka 22, 〒5458522, JP)
シャープ株式会社 (〒22 大阪府大阪市阿倍野区長池町２２番２２号 Osaka, 〒5458522, JP)
MINOURA Kiyoshi (())
箕浦 潔 (())
ISURUGI Akinobu (())
石動 彰信 (())
シャープ株式会社 (〒22 大阪府大阪市阿倍野区長池町２２番２２号 Osaka, 〒5458522, JP)
MINOURA Kiyoshi (())
箕浦 潔 (())
ISURUGI Akinobu (())
石動 彰信 (())
International Classes:
C25D11/04; B29C33/38; B29C59/04; C25D11/12; C25D11/24; G02B1/11
Attorney, Agent or Firm:
OKUDA Seiji (OKUDA & ASSOCIATES, 10th Floor Osaka Securities Exchange Bldg., 8-16, Kitahama 1-chome, Chuo-ku, Osaka-sh, Osaka 41, 〒5410041, JP)
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Claims: