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Anti-glare film

An anti-glare film and anti-glare layer technology, applied in optics, instruments, optical components, etc., can solve the problem of reducing the anti-glare performance of the display surface, and achieve the effect of suppressing the occurrence of whitening and dazzling, and fully anti-glare.

Inactive Publication Date: 2016-05-25
SUMITOMO CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for the anti-glare film disclosed in Patent Document 1, if the haze is to be further reduced (if low haze is to be achieved), the image display device equipped with the anti-glare film may be viewed obliquely. Reduced anti-glare performance
Therefore, the antiglare film disclosed in Patent Document 1 still has room for improvement in terms of antiglare properties at wide viewing angles.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0223] (Preparation of molds for anti-glare film production)

[0224] A material obtained by performing ballard copper plating on the surface of an aluminum roll (A6063 based on JIS) with a diameter of 300 mm was prepared. Ballard copper plating consists of copper plating / thin silver plating / surface copper plating, and the overall thickness of the plating is set to about 200 μm. The copper-plated surface was mirror-polished, and a photosensitive resin was applied and dried on the polished copper-plated surface to form a photosensitive resin film. Next, using the laser will be Figure 8 The pattern in which the pattern A shown above was repeatedly arranged was exposed on the photosensitive resin film, and it developed. Exposure and development were performed by laser using Laser Stream FX (manufactured by Think Laboratory). As the photosensitive resin film, a resin film containing a positive photosensitive resin was used. Here, pattern A is made by passing a pattern with ra...

Embodiment 2

[0234] Mold B was prepared in the same manner as Mold A in Example 1 except that the chrome plating thickness in the chrome plating process was set to 3 μm, and an anti-glare film was produced in the same manner as in Example 1 except that Mold A was replaced with Mold B. This antiglare film was referred to as antiglare film B.

Embodiment 3

[0236] Mold C was fabricated in the same manner as Mold A in Example 1 except that the chrome plating thickness in the chrome plating process was set to 5 μm, and an anti-glare film was produced in the same manner as in Example 1 except that Mold A was replaced with Mold C. Let this antiglare film be antiglare film C.

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Abstract

Provided is an anti-glare film which exhibits excellent anti-glare properties at a wide observation angle even when the haze is low, and which can sufficiently inhibit glare and color fading from occurring when disposed on an image display device. Provided is the anti-glare film having a transparent support body, and an anti-glare layer formed thereon and having minute irregularities, wherein: the total haze is between 0.1% and 3%, inclusive; the surface haze is between 1.1% and 2%, inclusive; the root-mean-square roughness is within a predetermined range when measured at a predetermined cut-off length, for example, the root-mean-square roughness (Rq) (0.08) is between 0.01 and 0.05 mum, inclusive, when measured at a cut-off length of 0.08 mm; and the ratio between the reflectance R(30) of a 30 degrees reflection angle and the reflectance R(40) of a 40 degrees reflection angle with regard to light that entered at a 30 degrees incident angle is between 0.00001 and 0.0025, inclusive, when R(40) / R(30).

Description

technical field [0001] The present invention relates to an antiglare film excellent in antiglare properties. Background technique [0002] For image display devices such as liquid crystal displays, plasma display panels, Braun tube (cathode ray tube: CRT) displays, and organic electroluminescent (EL) displays, in order to avoid In order to prevent degradation of visibility (visibility), an anti-glare film is disposed on the display surface. [0003] As an anti-glare film, a transparent film having a surface unevenness has been mainly considered. Such an anti-glare film exhibits anti-glare properties by reducing the reflection of external light by scattering and reflecting external light (external light scattered light) by using the uneven shape of the surface. However, when the scattered light from external light is strong, the entire display surface of the image display device may be whitish and the displayed color may not be clear, so-called "whitening (白ちゃけ)" may occur....

Claims

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Application Information

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IPC IPC(8): G02B1/11
CPCG02B5/0294G02B5/0215
Inventor 古谷勉
Owner SUMITOMO CHEM CO LTD
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