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1. (US20110012272) Method of fabricating a mold and method of producing an antireflection film using the mold

Office : United States of America
Application Number: 12805189 Application Date: 16.07.2010
Publication Number: 20110012272 Publication Date: 20.01.2011
Grant Number: 08349227 Grant Date: 08.01.2013
Publication Kind : B2
IPC:
B29D 11/00
B PERFORMING OPERATIONS; TRANSPORTING
29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
D
PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
11
Producing optical elements, e.g. lenses or prisms
Applicants: Sharp Kabushiki Kaisha
Inventors: Ihara Ichiro
Agents: Harness, Dickey & Pierce, P.L.C.
Priority Data: 2008-333674 26.12.2008 JP
Title: (EN) Method of fabricating a mold and method of producing an antireflection film using the mold
Abstract: front page image
(EN)

A motheye mold fabrication method of at least one embodiment of the present invention includes the steps of: (a) preparing an Al base in which an Al content is less than 99.99 mass %; (b) partially anodizing the Al base to form a porous alumina layer which has a plurality of very small recessed portions; (c) after step (b), allowing the porous alumina layer to be in contact with an etchant which contains an anodic inhibitor, thereby enlarging the plurality of very small recessed portions of the porous alumina layer; and (d) after step (c), further anodizing the Al base to grow the plurality of very small recessed portions.


Also published as:
JP2010168664EP2377970EP2383372US20100283165JP4531131JPWO2010073636
CN102027160IN3857/CHENP/2010BRPI0906259WO/2010/073636