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Antireflection laminate

A laminated body and anti-reflection technology, applied in coatings, optics, instruments, etc., can solve the problems of anti-reflection film resistance to steel wool and other poor scratch resistance, and achieve excellent scratch resistance and improved layer strength.

Active Publication Date: 2010-06-30
DAI NIPPON PRINTING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The antireflection film having the above-mentioned non-uniform film structure has the problem of poor scratch resistance such as steel wool resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0275]

[0276] Components of the following compositions were mixed to prepare a composition for forming a low-refractive index layer.

[0277] Surface-modified hollow silica particles A (hollow silica particles are 20% by weight of methyl isobutyl ketone): 15.0 parts by weight

[0278] In surface modification, solid silica microparticles A (medium silica microparticles are 20% by weight of methyl isobutyl ketone): 0.4 parts by weight

[0279] Pentaerythritol triacrylate (PETA): 1.2 parts by weight

[0280] Dipentaerythritol hexaacrylate (DPHA): 0.4 parts by weight

[0281] Irugakiae 127 (trade name, manufactured by Ciba Specialty Chemicals): 0.1 parts by weight

[0282] X-22-164E (trade name, manufactured by Shin-Etsu Chemical Co., Ltd.): 0.15 parts by weight

[0283] Methyl isobutyl ketone: 83.5 parts by weight

[0284]

[0285] A composition for forming a hard coat layer was prepared by blending components of the following compositions.

[0286] In surface modifica...

Embodiment 2

[0308] An antireflection laminate was produced in the same manner as in Example 1, except that the particle size of the solid silica fine particles A was changed in the surface modification. The evaluation results are shown in Table 1 together with the particle diameters of the solid silica fine particles in the surface modification.

Embodiment 3

[0310] An antireflection laminate was produced in the same manner as in Example 1, except that the particle diameter of the surface-modified hollow silica sol A and the particle diameter of the surface-modified solid silica fine particles A were changed. The evaluation results are shown in Table 1 together with the particle diameters of the surface-modified hollow silica sol A and the particle diameters of the surface-modified solid silica fine particles A.

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Abstract

This invention provides an antireflection laminate for use mainly in displays such as LCDs and PDPs. The antireflection laminate comprises a refractive index layer that has excellent scratch resistance, while containing empty particles and solid particles, and, at the same time, has a refractive index of not more than 1.45 and can ensure low reflective properties. The antireflection laminate comprises a refractive index layer having a refractive index of not more than 1.45 and is characterized in that the refractive index layer has been formed by exposing a composition for refractive index layer formation to an ionizing radiation, the composition comprises an ionizing radiation curing resin, crosslinkable empty particles comprising an outer shell layer and a porous or hollow interior surrounded by the outer shell layer, the surface of the empty particles being modified with crosslink forming groups, and crosslinkable solid particles of which the interior is neither porous nor hollow, the surface of the solid particles being modified with crosslink forming groups, and the crosslinkable groups contain an ionizing radiation curing group and have an identical or very similar structure.

Description

technical field [0001] The present invention relates to an antireflection laminate provided on the front surface of a display (image display device) such as an LCD. Background technique [0002] The display surface of image display devices such as liquid crystal displays (LCDs), cathode tube displays (CRTs), and plasma display panels (PDPs) is required to reduce reflections caused by light from external light sources such as fluorescent lamps and improve their visibility. Therefore, so far, it has been studied to reduce the reflectivity of the display surface and improve the visibility by providing an anti-reflection film on the display surface of the image display device by utilizing the phenomenon that the surface of a transparent object is refracted. It is covered with a transparent film (low refractive index layer) with a low index to reduce reflectivity. [0003] There are various methods of setting the refractive index low, and one method includes a method of lowering...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B1/11G02F1/1335G09F9/00
CPCG02B2207/107G02B1/111G02F1/133502Y10T428/24997Y10T428/249967Y10T428/249953
Inventor 礒野早纪吉原俊夫
Owner DAI NIPPON PRINTING CO LTD
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