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Anti-glare film and display device using the anti-glare film

A technology of anti-glare film and anti-glare layer, which is applied in the direction of identification devices, instruments, optics, etc., can solve problems such as uneven brightness and reduced display quality, and achieve the effect of suppressing the reduction of contrast

Active Publication Date: 2022-01-14
DAI NIPPON PRINTING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the case of using an anti-glare film having a concave-convex structure on the surface of the display element, there is a problem that, due to the concave-convex structure, fine brightness unevenness (glare) is seen in the screen image light, which deteriorates the display quality. reduce

Method used

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  • Anti-glare film and display device using the anti-glare film
  • Anti-glare film and display device using the anti-glare film
  • Anti-glare film and display device using the anti-glare film

Examples

Experimental program
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Effect test

Embodiment 1

[0299] On a transparent substrate (triacetyl cellulose resin film (TAC) with a thickness of 80 μm, manufactured by Fuji Film Co., Ltd., TD80UL), the anti-glare layer coating solution 1 of the following formulation was coated, and dried at 70° C. and a wind speed of 5 m / s for 30 Seconds later, in a nitrogen atmosphere (oxygen concentration below 200ppm) according to the cumulative light intensity of 100mJ / cm 2 The method irradiates ultraviolet rays to form an anti-glare layer and obtain an anti-glare film. The film thickness of the antiglare layer was 5.0 μm. It should be noted that the Sa on the side opposite to the anti-glare layer of the anti-glare film 2.5-250 is 0.012 μm.

[0300]

[0301] ·30 parts of pentaerythritol triacrylate

[0302] (manufactured by Nippon Kayaku Co., Ltd., KAYARAD-PET-30)

[0303] ·Isocyanuric acid EO modified triacrylate

[0304] (Manufactured by Toagosei Co., Ltd., M-313) 25 parts

[0305] ·Acrylic polymer

[0306] (manu...

Embodiment 2

[0322] Except having changed the compounding quantity of the translucent particle of Example 1 into 12 parts, it carried out similarly to Example 1, and obtained the antiglare film.

Embodiment 3

[0324] An antiglare film was obtained in the same manner as in Example 1 except that the refractive index of the translucent particles in Example 1 was changed to 1.565.

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Abstract

Provided is an anti-glare film capable of suppressing glare of light on a screen image of an ultra-high-definition display element having a pixel density of 300 ppi or higher and capable of suppressing a decrease in contrast. An antiglare film having an antiglare layer, wherein the internal haze is 5.0 to 25.0%, the surface haze is 20.0% or less, and the above antiglare when λs is 2.5 μm and λc is 250 μm The three-dimensional arithmetic mean roughness Sa of the layer surface 2.5‑250 , and the three-dimensional arithmetic mean roughness Sa of the surface of the anti-glare layer when λs is 2.5 μm and λc is 70 μm 2.5‑70 The following formulas (1) to (3) are satisfied. 0.080μm≤Sa 2.5‑250 (1)Sa 2.5‑250 ‑Sa 2.5‑70 ≤0.030μm(2)0.83≤Sa 2.5‑70 / Sa 2.5‑250 (3).

Description

technical field [0001] The present invention relates to an antiglare film and a display device using the antiglare film. Background technique [0002] For the purpose of suppressing the reflection of external light, etc., an anti-glare film having a concavo-convex structure may be provided on the surface of the display element. [0003] However, in the case of using an anti-glare film having a concave-convex structure on the surface of the display element, there is a problem that, due to the concave-convex structure, fine brightness unevenness (glare) is seen in the screen image light, which deteriorates the display quality. reduce. [0004] In particular, in recent years, in the case of ultra-high-definition display devices (pixel density of 300 ppi or more), glare tends to become stronger, and the problem of glare has become more serious. [0005] As techniques for suppressing glare due to surface irregularities, techniques in Patent Documents 1 to 3 have been proposed. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/02G02F1/1335G09F9/00
CPCG02B5/02G02F1/1335G09F9/00G02B5/0221G02F1/133502G09F9/30
Inventor 古井玄辻本淳高山阳亮小川智洋
Owner DAI NIPPON PRINTING CO LTD
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