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Antireflection film, polarizing plate, and image display device

An anti-reflection film, reactive technology, used in polarizing elements, chemical instruments and methods, electronic equipment, etc., can solve the problems of reducing sufficient refractive index and insufficient hardness of the low-refractive index layer, and achieve excellent surface hardness and uniformity. excellent effect

Active Publication Date: 2013-12-18
DAI NIPPON PRINTING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, when these compounds can be contained in the low-refractive index layer containing fluorine atom-containing polymers or monomers to a sufficient extent to lower the refractive index, there is a problem that the hardness of the low-refractive index layer is insufficient.

Method used

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  • Antireflection film, polarizing plate, and image display device
  • Antireflection film, polarizing plate, and image display device
  • Antireflection film, polarizing plate, and image display device

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0165] (Preparation of composition (1) for hard coat layer)

[0166] The components shown below were mixed to prepare a composition (1) for a hard coat layer.

[0167] 10 parts by mass of reactive silica fine particles (Z7537, manufactured by JSR Corporation, 50% of solid content, 60% of reactive silica fine particles)

[0168] 5.7 parts by mass of urethane acrylate (UV1700B, manufactured by Nippon Gosei Co., 10 functions)

[0169] 0.6 parts by mass of polymerization initiator (Irgacure 184; manufactured by BASF Corporation)

[0170] 3.3 parts by mass of methyl ethyl ketone

[0171] 2.3 parts by mass of methyl isobutyl ketone

[0172] In addition, the solid content mass ratio of the leveling agent in the composition (1) for hard coats was 0.10%.

[0173] (Preparation of composition (2) for hard coat layer)

[0174] The components shown below were mixed to prepare a composition (2) for a hard coat layer.

[0175] 5 parts by mass of polyester acrylate (Aronix M-9050, manuf...

Embodiment 1

[0301] Wet weight 30g / m on one side of cellulose triacetate film (thickness 80μm) 2 (dry weight 15g / m 2 ) to coat the composition (1) for a hard coat layer. Dry at 50°C for 30 seconds and irradiate at 50mJ / cm 2 UV rays, forming a hard coat.

[0302] Next, the composition (1) for low-refractive-index layers was apply|coated so that the film thickness after drying (25 degreeC*30 second-70 degreeC*30 second) might become 0.1 micrometer on the hard-coat layer formed. And using an ultraviolet irradiation device (manufactured by Fusion UV Systems Japan, light source H bulb), with a radiation dose of 192mJ / m 2 It was irradiated with ultraviolet rays and cured to obtain an antireflection film. The film thickness was adjusted so that the minimum value of the reflectance was located near the wavelength of 550 nm.

[0303] In the low refractive index layer of the obtained antireflection film, the compounding ratio of hollow silica particles to (meth)acrylic resin (content of hollow ...

Embodiment 2

[0305] An antireflection film was obtained in the same manner as in Example 1, except that the composition for a low-refractive index layer (1) was used instead of the composition for a low-refractive index layer (2).

[0306] In the low refractive index layer of the obtained antireflection film, the compounding ratio of hollow silica particles to (meth)acrylic resin (content of hollow silica particles / content of (meth)acrylic resin) is: 1.60.

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Abstract

The purpose of the present invention is to provide an antireflection film that has a sufficient surface hardness and a uniform surface, comprises a low-refractive-index layer having a sufficiently low refractive index, and has excellent antireflection performance. An antireflection film wherein a hard coating layer is formed on a light-permeable substrate and a low-refractive-index layer is formed on the hard coating layer is characterized in that the low-refractive-index layer of the antireflection film comprises (meth)acrylic resin, hollow silica microparticles, reactive silica microparticles and an antifouling agent and the reactive silica microparticles in the low-refractive-index layer are unevenly distributed near the interface on the hard coating layer side and / or near the interface of the side opposite the hard coating layer.

Description

【Technical field】 [0001] The present invention relates to an antireflection film, a polarizer and an image display device. 【Background technique】 [0002] In cathode line tube display (CRT), liquid crystal display (LCD), plasma display (PDP), electroluminescence display (ELD), field emission display (FED), touch screen, tablet computer, electronic paper, etc. In an image display device, the image display surface is required to reduce reflection due to light irradiated from an external light source and improve its visibility. [0003] On the other hand, reflection on the image display surface of an image display device is generally reduced and visibility is improved by using an antireflection film formed with an antireflection layer on a light-transmitting substrate. [0004] Conventionally, as an antireflection film having an antireflection layer, a structure in which a low-refractive index layer having a refractive index lower than that of a light-transmitting base materia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B1/11B32B27/20B32B27/30G02B1/10G02B5/30G02F1/1335
CPCG02B1/105G02B1/11G02B2207/107G02B1/111G02B1/14G02B1/18B32B27/20B32B27/308G02B5/30B32B2307/418B32B2457/20
Inventor 林真理子堀尾智之
Owner DAI NIPPON PRINTING CO LTD
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