Unlock instant, AI-driven research and patent intelligence for your innovation.

Mold and method for producing mold

A mold, normal direction technology, applied in anodizing and other directions, can solve the problem of large effect of manufacturing cost, and achieve the effect of improving manufacturing yield

Active Publication Date: 2017-05-10
SHARP KK
View PDF13 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In particular, when the surface of the anodized film of aluminum is directly used as a mold as described in Patent Documents 2 and 3, the effect of reducing the production cost is large

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Mold and method for producing mold
  • Mold and method for producing mold
  • Mold and method for producing mold

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0061] refer to figure 1 The moth-eye mold 100 according to Embodiment 1 of the present invention will be described. figure 1 (a) is a schematic perspective view of the moth-eye mold 100 . figure 1 (b) is a schematic cross-sectional view of a portion of the moth-eye mold 100 other than the marking portion 50 . figure 1 (c) is a schematic cross-sectional view of the marking portion 50 of the moth-eye mold 100 . figure 1 (d) is a schematic diagram when the surface of the antireflection film 32 formed using the moth-eye mold 100 is seen from the vertical direction.

[0062] Such as figure 1 As shown in (a) to (c), the moth-eye mold 100 is a cylindrical mold including an aluminum substrate 12 and a porous alumina layer 14 formed on the aluminum substrate 12 . The porous alumina layer 14 has a plurality of microscopic recesses 14p having a two-dimensional size Dp of not less than 10 nm and less than 500 nm when viewed from the normal direction of the surface on the surfac...

Embodiment approach 2

[0116] Embodiment 2 of the present invention is a moth-eye mold having a plurality of macroscopic recesses in addition to a plurality of microscopic recesses on the surface.

[0117] As described above, Embodiment 1 of the present invention has an inverted moth-eye structure formed on the surface, that is, a plurality of microscopic recesses with a two-dimensional size of 10 nm or more and less than 500 nm when viewed from the normal direction of the surface. Moth-eye molds. The mold of the embodiment of the present invention is not limited thereto. Embodiment 2 of the present invention is a moth-eye mold having an inverted moth-eye structure and an inverted anti-glare structure. That is, the moth-eye mold according to Embodiment 2 differs from Embodiment 1 in that it has not only microscopic recesses but also a plurality of macroscopic recesses whose two-dimensional size is 500 nm or more and less than 200 μm when viewed from the normal direction of the surface. The moth-ey...

Embodiment approach 3

[0121] Embodiment 3 of the present invention is a moth-eye mold that has an inverted moth-eye structure and an inverted anti-glare structure on the surface, and does not have a macroscopic concave portion in a marking portion.

[0122] refer to Figure 7 A moth-eye mold 110 according to Embodiment 3 of the present invention will be described. Figure 7 (a) is a schematic cross-sectional view of the moth-eye mold 110, Figure 7 (b) is a schematic cross-sectional view of the antireflection film 32 formed using the moth-eye mold 110 .

[0123] Figure 7 The moth-eye mold 110 shown in (a) is a cylindrical mold having a surface structure. The surface structure has: a plurality of microscopic recesses 14p having a two-dimensional size of 10 nm or more and less than 500 nm when viewed from the normal direction of the surface; and a two-dimensional size of 500 nm or more and less than 200 μm when viewed from the normal direction of the surface A plurality of macroscopic recesses 1...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
heightaaaaaaaaaa
surface roughnessaaaaaaaaaa
surface roughnessaaaaaaaaaa
Login to View More

Abstract

A mold (100) is provided with an aluminum base material (12) and a porous alumina layer (14) that is formed on the aluminum base material. The porous alumina layer is in the shape of a cylinder having, on the surface (18s) thereof, a plurality of micro-recesses (14p) having two-dimensional sizes of not less than 10 nm but less than 500 nm when viewed in the normal direction of the surface. The porous alumina layer also has, on the side surface thereof, at least one marker section (50) that defines a position in the circumferential direction of the mold. The maximum height Rz of the at least one marker section is greater than 500 nm, and the arithmetic mean roughness Ra of the at least one marker section is 300 nm or less.

Description

technical field [0001] The present invention relates to a mold and a method of manufacturing the mold, for example, to a mold having an inverted moth-eye structure on the surface. 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 general, anti-reflection technology is applied to optical elements such as display devices and camera lenses used in televisions, mobile phones, etc. in order to reduce surface reflection and increase light transmission. This is because, for example, when light passes through an interface between media with different refractive indices, such as when light is incident on the interface between air and glass, Fresnel reflection or the like reduces the amount of transmitted light and reduces visibility. [0003] In recent years, as an anti-reflection technology, a met...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B29C59/04B29C33/38C25D11/04
CPCB29C33/38B29C59/04C25D11/04
Inventor 山田信明松村良三中松健一郎
Owner SHARP KK