DIE, PROCESS FOR PRODUCING DIE, AND PROCESS FOR PRODUCING ANTIREFLECTION FILM

摘要

An object of the present invention is to provide a method for manufacturing a mold that has a porous alumina layer over its surface, which is capable of preventing formation of pits (recesses). A moth-eye mold manufacturing method of the present invention is a method for manufacturing a mold which has a porous alumina layer (14) over its surface, including the steps of: providing a mold base (10) which includes an aluminum base (12) and an aluminum film (18) deposited on a surface of the aluminum base (12), the aluminum film (18) having a purity of not less than 99.99 mass%; anodizing a surface (18s) of the aluminum film (18) to form a porous alumina layer (14) which has a plurality of minute recessed portions (14p); and bringing the porous alumina layer (14) into contact with an etching solution to enlarge the plurality of minute recessed portions (14p) of the porous alumina layer (14).