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Anti-glare film

A technology of anti-glare film and anti-glare layer, which is applied in the direction of optical components, optics, instruments, etc., can solve the problem of anti-glare reduction and achieve the effect of suppressing whitening and glare

Inactive Publication Date: 2016-02-10
SUMITOMO CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the anti-glare film disclosed in Patent Document 1 is to further reduce the haze (to make the haze low), there will be a problem when viewing the display surface of the image display device on which the anti-glare film is arranged obliquely. The case where the anti-glare property decreases
Therefore, the antiglare film disclosed in Patent Document 1 still has room for improvement in terms of antiglare properties at large viewing angles.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0221] (Preparation of molds for anti-glare film production)

[0222] The material which gave the ballard copper plating to the surface of the aluminum roll (A6063 based on JIS) of diameter 300mm was prepared. Ballard copper plating consists of copper plating / thin silver plating / surface copper plating, with a total thickness of approximately 200μm. The copper-plated surface is mirror-polished, and a photosensitive resin is applied to the polished copper-plated surface and dried to form a photosensitive resin film. Then, repeat the array Figure 10 The pattern obtained by the pattern shown in was exposed and developed with laser light on the photosensitive resin film. Exposure and development by laser light were performed using Laser Stream FX [manufactured by Think Laboratory]. A positive type resin is used as the photosensitive resin. Figure 10 The pattern shown in is a pattern made by passing a plurality of Gaussian function-type band-pass filters from a pattern with ra...

Embodiment 2

[0232] A mold was produced in the same manner as in Example 1 except that the thickness of nickel plating in the nickel plating process was set to 5 μm. An anti-glare film was produced by the same method as the production of the anti-glare film of Example 1 except using this mold. Let the obtained antiglare film be antiglare film B.

Embodiment 3

[0234] A mold was produced in the same manner as the production of the mold in Example 1 except that the nickel plating thickness in the nickel plating process was set to 9 μm. An anti-glare film was produced by the same method as the production of the anti-glare film of Example 1 except using this mold. Let the obtained antiglare film be antiglare film C.

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Abstract

The objective of the invention lies in providing an anti-glare film. Although the film is low in haze, the film is excellent in anti-glare performance in a wide observation angle. Moreover, when the film is configured on an image display device, the film can fully inhibit glare. The film is provided with a transparent supporting body and an anti-glare layer which is formed on the supporting body and has a fine surface concave-convex shape. The total haze of the film is greater than 0.1% and less than 3%, and the surface haze of the film is greater than 0.1% and less than 2%. The mean value of inclination angles of the fine surface concave-convex shape is greater than 0.2 degrees and less than 1.2 degrees, and the standard deviation of the inclination angles is greater than 0.1 degrees and less than 0.8 degrees. The intensity ratios of the power spectrum of a complex amplitude, calculated through the elevation of the fine surface concave-convex shape and the refractive index of the anti-glare layer, at two spatial frequencies are respectively located in a specific range.

Description

technical field [0001] The present invention relates to an antiglare film excellent in antiglare properties. Background technique [0002] Image display devices such as liquid crystal displays, plasma display panels, Braun tube (cathode ray tube: CRT) displays, organic electroluminescent (EL) displays, in order to prevent deterioration of visibility caused by external light shining on the display surface , an anti-glare film is disposed on the display surface. [0003] As an anti-glare film, a transparent film having an uneven surface has been mainly studied. This anti-glare film exhibits anti-glare properties by scattering and reflecting external light (external light scattering light) by its surface unevenness to reduce reflection. However, in the case of strong external light scattering, so-called "whitening" may occur in which the entire display surface of the image display device becomes whitish or the display becomes an unclear color. In addition, so-called "glare" ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B1/118
Inventor 山口智之福井仁之古谷勉
Owner SUMITOMO CHEM CO LTD
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