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Optical film, polarizing plate and image display device

A technology for image display devices and optical films, applied in the directions of optics, polarizing elements, optical elements, etc., can solve the problems of inability to uniformly coat, insufficient wettability of fillers, and repulsion of fillers.

Active Publication Date: 2016-08-10
KONICA MINOLTA INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to fill the above-mentioned void layer, if a photocurable resin is applied as a filler on the surface of the hard coat layer, the filler will be repelled due to insufficient wettability of the filler, and it will not be uniform on the hard coat layer. ground coating

Method used

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

Examples

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preparation example Construction

[0112] (Method for preparing fine particles coated with polymer silane coupling agent)

[0113] The preparation method of polymer silane coupling agent-coated microparticles can be specifically prepared by adding a polymer silane coupling agent to an organic solvent dispersion of microparticles, and coating the microparticles with a polymer silane coupling agent in the presence of a base.

[0114] Examples of organic solvents include alcohols such as methanol, ethanol, propanol, 2-propanol (IPA), butanol, diacetone alcohol, furfuryl alcohol, tetrahydrofurfuryl alcohol, ethylene glycol, hexanediol, and isopropyl glycol. Classes; methyl acetate, ethyl acetate, butyl acetate and other esters; diethyl ether, ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, diethylene glycol monomethyl ether, diethyl ether Glycol monoethyl ether, propylene glycol monomethyl ether and other ethers; acetone, methyl ethyl ketone, methyl isobutyl keton...

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PUM

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Abstract

This optical film (15) comprises a film base (12) and a functional layer (13) that is formed on at least one surface of the film base (12), and satisfies the following conditional expressions (1) and (2) at the same time. Conditional expression (1): a + b >= 30 mN / m. Conditional expression (2): 1 <= (a / b) <= 10 In the conditional expressions, a represents the polar component (mN / m) of the surface free energy of the functional layer; and b represents the variance component (mN / m) of the surface free energy of the functional layer.

Description

technical field [0001] The present invention relates to an optical film having a functional layer (such as a hard coat layer) on a film substrate, a polarizing plate having the optical film, and an image display device having the polarizing plate. Background technique [0002] Conventionally, various liquid crystal display devices in which a touch panel is provided on a liquid crystal display have been proposed. In this liquid crystal display device, if there is a gap layer between the liquid crystal display screen and the touch screen, the contrast will be caused due to the reflection and scattering of light generated at the interface between the liquid crystal display screen and the gap layer or the interface between the touch screen and the gap layer. , the reduction of brightness. In order to avoid such a problem, it is preferable to fill the above-mentioned void layer with a filler such as a photocurable resin. [0003] On the other hand, from the viewpoint of protect...

Claims

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Application Information

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IPC IPC(8): G02B5/30B32B7/02B32B33/00G02B1/10G02F1/1335G06F3/041
CPCG06F3/041B32B2307/42B32B2457/204B32B2457/206B32B2457/208G02B5/305G02F1/133528G06F2203/04103
Inventor 堀井广幸
Owner KONICA MINOLTA INC