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Hard coat film, optical layered body, and image display device

A technology of optical laminates and hard coatings, applied in coatings, optics, optical components, etc., can solve the problems of easy and obvious peeling between layers, and achieve the effects of excellent adhesion, improved visibility, and less coloring

Active Publication Date: 2020-05-19
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially in an environment exposed to ultraviolet rays such as outdoors, the problem of delamination between layers is likely to become apparent

Method used

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  • Hard coat film, optical layered body, and image display device
  • Hard coat film, optical layered body, and image display device
  • Hard coat film, optical layered body, and image display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0095] Hereinafter, although an Example is given and this invention is demonstrated in more detail, this invention is not limited to the following Example.

[0096] [Evaluation method]

[0097]

[0098] The arithmetic mean surface roughness Ra of the hard coat layer was measured using an atomic force microscope (AFM) under the following conditions.

[0099] Device: Dimemsion 3100 manufactured by Bruker, Controller: NanoscopeV

[0100] Measuring mode: tapping mode

[0101] Cantilever: Monocrystalline Si

[0102] Measuring field of view: 1μm×1μm

[0103]

[0104] A black acrylic plate (manufactured by Mitsubishi Chemical) with a thickness of 2mm was attached to the main surface of the hard-coated film on which the hard-coat layer was not formed with a transparent acrylic adhesive, and a diffuse reflectance spectrum (specular reflection removal (SCE) spectrum) was prepared. ) samples for measurement. D65 light was irradiated on the sample from the formation of the hard c...

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Abstract

A hard coat film (1) is provided with a hard coat layer (11) on one principal surface of a film substrate (10). The hard coat layer includes a binder resin and an inorganic filler, the content of theinorganic filler with respect to 100 parts by weight of the binder resin 100 being 20-80 parts by weight. The average primary particle diameter of the filler is preferably 25-70 nm. The arithmetic mean roughness of the surface of the hard coat layer is preferably at least 2 nm. The b* of diffuse reflected light from the hard coat layer is preferably -0.2 or greater.

Description

technical field [0001] The present invention relates to a hard coat film and an optical laminate in which an inorganic thin film is provided on the hard coat film. Background technique [0002] In some cases, a hard coat layer is provided on a film arranged on the identification side surface of an image display device such as a liquid crystal display or an organic EL (Electroluminescence, electroluminescence) display, or a film used for bonding to a window glass to prevent the Damage caused by contact, etc. Various functions can be imparted by providing an inorganic thin film on the hard coat layer. For example, an antireflection film can be obtained by providing an antireflection layer comprising a multilayer film having a different refractive index on the hard coat layer of the hard coat film. [0003] In an optical laminate including an inorganic thin film layer on a hard coat layer, the interlayer adhesion force between the hard coat layer and the inorganic layer is sm...

Claims

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Application Information

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IPC IPC(8): G02B1/14G02B1/115G02B1/18B32B7/023B32B27/00B32B27/18
CPCB32B7/023B32B27/00B32B27/18G02B1/115G02B1/14G02B1/18C08J7/046C08J7/0423C08J5/18C09D7/61C09D1/00C09D5/004C09D5/16C08K2201/011
Inventor 高见佳史横井辽太郎梨木智刚
Owner NITTO DENKO CORP
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