Title:
METHOD FOR PRODUCING MOLD AND ELECTRODE STRUCTURE USED THEREFOR
Document Type and Number:
WIPO Patent Application WO/2010/095415
Kind Code:
A1
Abstract:
Disclosed is a method for producing a mold for moth eye structures, which comprises: a step (a) wherein a porous alumina layer having a plurality of fine recessed portions is formed by anodizing a surface (10a) of an aluminum film or aluminum base via an electrode which is in contact with the surface: a step (b) wherein the plurality of fine recessed portions in the porous alumina layer are enlarged by bringing the porous alumina layer into contact with an etchant after the step (a); and a step (c) wherein the plurality of fine recessed portions are further grown by anodizing the surface via the electrode after the step (b). The step (b) is performed, while controlling such that an electrode part (32a2), which is in contact with the surface in the etchant, is not in contact with the etchant. Consequently, it is possible to prevent formation of defects which are caused by non-uniform corrosion.
Inventors:
ISURUGI AKINOBU
MINOURA KIYOSHI
MINOURA KIYOSHI
Application Number:
PCT/JP2010/000937
Publication Date:
August 26, 2010
Filing Date:
February 16, 2010
Export Citation:
Assignee:
SHARP KK (JP)
ISURUGI AKINOBU
MINOURA KIYOSHI
ISURUGI AKINOBU
MINOURA KIYOSHI
International Classes:
C25D11/04; C25D11/12; C25D11/24; C25D17/10; C25D21/00; G02B1/11; G02B1/118
Domestic Patent References:
| WO2008001847A1 | 2008-01-03 |
Foreign References:
| JP2004218011A | 2004-08-05 |
Other References:
See also references of EP 2400044A4
None
None
Attorney, Agent or Firm:
OKUDA, SEIJI (JP)
Seiji Okuda (JP)
Seiji Okuda (JP)
Download PDF: