Die and method for manufacturing die, and anti-reflection coating

Abstract

A die (10) has an anodic oxidation porous alumina layer on the surface, and has a plurality of first depressed sections (12) and a plurality of second depressed sections (14), wherein the plurality of second depressed sections (14) have two-dimensional size of 190 nm - 50 [mu]m inclusive when viewed from the normal direction of the surface, and have a shape in which a plurality of fine depressed sections (15) having two-dimensional size of 10 nm - 200 nm inclusive are formed on the inner surface, wherein the plurality of first depressed sections (12) have two-dimensional size of 10 nm - 200 nm inclusive, and are formed between the plurality of second depressed sections (14), and wherein the average value of the two-dimensional size of the plurality of second depressed sections (14); is greater than the average value of the two-dimensional size of the plurality of first depressed sections (12). Provided are a Moth-eye die, the wettability to hardening resin of which has been improved, and a method for manufacturing same.

Description

technical field [0001] The present invention relates to a mold, a method of manufacturing the mold, and an antireflection film. The "mold" mentioned here includes molds used in various processing methods (stamping, casting), and is sometimes called a stamper. In addition, it can also be used for printing (including nanoprinting). Background technique [0002] In optical elements such as display devices and camera lenses used in televisions, mobile phones, etc., anti-reflection technology is generally implemented in order to reduce surface reflection and increase light transmission. This is because, for example, as in the case where light is incident on the interface between air and glass, when light passes through the interface of media with different refractive indices, due to Fresnel reflection, etc., the amount of light transmitted decreases and the visibility decreases. . [0003] In recent years, as an antireflection technology, a method of forming a fine uneven patt...

AI Technical Summary

Problems solved by technology

This is because, for example, as in the case of light incident on the interface between air and glass, when light passes through the interface of media with different refractive indices, the amount of transmitted light decreases due to Fresnel reflection or the like, and visibility decreases.

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