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Method of manufacturing antiglare film and method of manufacturing mold thereof

A manufacturing method and technology of anti-glare film, applied in the field of mold manufacturing, can solve the problems of glare, low haze, anti-glare film, turbidity, etc., and achieve the effect of preventing glare, good reproducibility, and preventing reflection

Inactive Publication Date: 2011-04-13
SUMITOMO CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the antiglare film produced by dispersing such fine particles, the arrangement and shape of the unevenness are controlled by the dispersion state of the fine particles in the resin solution, the coating state, etc., so it is difficult to obtain the desired surface unevenness. The anti-glare film with low density has the problem of not being able to obtain a sufficient anti-glare effect
In addition, when such a conventional anti-glare film is arranged on the surface of an image display device, there is a problem that the entire display surface becomes whitish due to scattered light, and the display tends to produce a cloudy color, so-called "whitening".
In addition, with the high-definition of recent image display devices, there is also a problem that the pixels of the image display device and the surface unevenness of the anti-glare film interfere, and as a result, it is easy to cause the brightness distribution to be difficult to see on the display surface. , the so-called "dazzling" phenomenon
As a result, there is a problem that these large uneven shapes interfere with the pixels of the image display device, and the so-called glare that is difficult to see easily occurs because of the brightness distribution.

Method used

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  • Method of manufacturing antiglare film and method of manufacturing mold thereof
  • Method of manufacturing antiglare film and method of manufacturing mold thereof
  • Method of manufacturing antiglare film and method of manufacturing mold thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0091] The surface of stainless steel (STAVAX, manufactured by Uddeholm Co., Ltd.) with a length of 100 mm×a width of 100 mm was prepared by electroless nickel plating. The thickness of the electroless nickel plating is set to about 100 μm. The electroless nickel-plated surface was mirror-finished by cutting. On the mirror-finished electroless nickel-plated surface, the nearest adjacent distance between the fine recesses is 25 μm, and the depth of cut is 0.6 μm. Figure 10 Die A was produced by cutting a plurality of fine recesses in the arrangement shown in . Among them, in the cutting process, the base material for the mold is set on a processing table that moves in the X direction and the Y direction, and a diamond turning tool with a tool nose radius of 143 μm is attached to the drive mechanism for micro-reciprocating movement driven by a piezoelectric element, and the mold It is performed by moving the base material at a constant speed in the X direction, and at the sam...

Embodiment 2

[0094] In such a manner that the closest adjacent distance between fine recesses is 40 μm and the depth of cut is 0.6 μm, press Figure 11 Mold B was fabricated in the same manner as in Example 1 except that a plurality of fine recesses were cut in the arrangement shown. Except having used the mold B obtained, it carried out similarly to Example 1, and produced the transparent anti-glare film B.

[0095]

[0096] The surface shape of each mold obtained in Example 1 and Example 2 was evaluated. The measurement of the surface shape used a confocal microscope PLμ2300 (manufactured by Sensofar). The magnification of the objective lens at the time of measurement was 50 times. Based on the measured data, the arithmetic mean height Pa, the mean length PSm, and the maximum cross-sectional height Pt are calculated by using a method based on JIS B 0601. In addition, the average inclination angle θ and the maximum inclination angle θ of each mold surface were calculated from the cro...

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Abstract

The present invention provides a method of manufacturing a mold for manufacturing an antiglare film with a fine convex-concave shape. The method comprises the following steps: a plating step of implementing copper plating or nickel plating on a surface of a substrate for the mold, a mirror surface processing step of implementing at least one selected from cutting and grinding on the surface which is implemented with copper plating or nickel plating through the plating step for forming a mirror surface with a surface roughness smaller than 0.1 mu m, a fine dent part forming step of forming a plurality of fine dent parts on the surface after mirror surface processing through cutting, and a protective film forming process of forming a protective film on the surface with the formed fine dent parts, wherein the cutting to the plurality of fine dent parts is performed through a cutting tool in the fine dent part forming step. The cutting tool moves linearly relatively to a direction which is parallel with a surface of the substrate for the mold and performs fine reciprocation in a direction that is vertical with the surface of the substrate for the mold, so the average most adjacent distance between the fine dent parts being cut, and the cutting depth satisfy a certain condition.

Description

technical field [0001] The present invention relates to a method for producing an antiglare film having low haze and excellent antiglare properties, and a method for producing a mold for producing such an antiglare film. Background technique [0002] Image display devices such as liquid crystal displays and plasma display panels, Braun tube (cathode ray tube: CRT) displays, organic electroluminescence (EL) displays, etc., when external light shines on the display surface, visibility is significantly impaired. In order to prevent the reflection of such external light, in TVs and personal computers that value image quality, video cameras and digital cameras used outdoors where external light is strong, and mobile phones that use reflected light to display, image display The surface of the device is provided with a film layer to prevent external light from being reflected. The film layer is roughly divided into a film layer formed by applying a non-reflective treatment that ut...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/24G02B1/11B29C33/38B29C33/42B29C59/02B29L11/00
CPCB29C33/38B29C33/424B29C59/022B29D11/00788C23C30/00G02B5/0268
Inventor 古谷勉宫本浩史森正春早川登
Owner SUMITOMO CHEM CO LTD
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