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Polarizing film with adhesive layer, and image display device

A technology of adhesive layer and polarizing film, which is applied in the direction of adhesive type, ester copolymer adhesive, film/sheet adhesive, etc., to suppress the deterioration of optical reliability, good optical reliability, Excellent antistatic effect

Pending Publication Date: 2021-05-25
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The static electricity generated in this way affects, for example, the alignment of the liquid crystal layer inside the liquid crystal display panel and causes problems.

Method used

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  • Polarizing film with adhesive layer, and image display device
  • Polarizing film with adhesive layer, and image display device
  • Polarizing film with adhesive layer, and image display device

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0157]

[0158] The resin composition for transparent layers can be prepared by any appropriate method. For example, it can be prepared by mixing a polymer (a), an epoxy resin (b), and any appropriate additives used as necessary in any appropriate solvent. Moreover, when polymerizing a polymer (a) by solution polymerization, it can prepare by adding and mixing an epoxy resin (b) and arbitrary appropriate additives to the polymerization solution of a polymer (a).

[0159] As a forming material other than the above-mentioned forming material containing the urethane prepolymer (a), the above-mentioned forming material containing the epoxy resin, and the above-mentioned forming material containing the composition containing the polymer (a) and the epoxy resin (b) The material of the layer includes, for example, a cyanoacrylate-based material, an epoxy-based material, a urethane acrylate-based material, and the like.

[0160] Formation of the above-mentioned transparent layer ca...

Embodiment 1

[0297]

[0298] A monomer mixture containing 99 parts of butyl acrylate and 1 part of 4-hydroxybutyl acrylate was charged into a 4-necked flask equipped with a stirring blade, a thermometer, a nitrogen gas introduction tube, and a condenser. Further, 0.1 part of 2,2'-azobisisobutyronitrile was added as a polymerization initiator with 100 parts of ethyl acetate to 100 parts of the above-mentioned monomer mixture (solid content), and nitrogen gas was introduced while stirring slowly to carry out nitrogen replacement. Thereafter, the liquid temperature in the flask was kept at around 55° C., and the polymerization reaction was performed for 8 hours to prepare a solution of a (meth)acrylic polymer having a weight average molecular weight (Mw) of 1.6 million and Mw / Mn=3.7.

[0299] (Preparation of Adhesive Composition)

[0300] With respect to 100 parts of solid content of the solution of the acrylic polymer obtained above, 0.1 part of an isocyanate crosslinking agent (Takenate D...

Embodiment 2～9、 comparative example 1～3

[0309] Embodiment 2~9, comparative example 1~3, reference example

[0310] In Example 1, as shown in Table 1, the type of the polarizing film, the composition of the monomer mixture used in the preparation of the acrylic polymer (A), and the ionic compound used in the preparation of the adhesive composition ( B) The type (EMI-FSI or Li-TFSI) or its compounding ratio, the thickness of the adhesive layer, the presence or absence of a conductive layer, the presence or absence of a transparent layer forming material, the type or its thickness are shown in Table 1 Except having changed, it carried out similarly to Example 1, and produced the one side protection (or both sides protection) polarizing film with an adhesive layer.

[0311] In addition, for the transparent layer of Example 9, the above-mentioned transparent layer-forming material C was applied to one side of the polarizer of the above-mentioned one-side protective polarizing film (the one without the transparent protect...

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Abstract

The invention relates to a polarizing film with an adhesive layer, which comprises a polarizing film and an adhesive layer. The polarizing film comprises a polarizing element, a transparent protective film on only one surface of the polarizing element, and a conductive layer on the other one surface of the polarizing element with a transparent layer therebetween that is no more than 10 [mu]m thick and that is formed directly on the polarizing element. The adhesive layer is provided on the polarizing film with the aforementioned conductive layer interposed therebetween. Even in the case that a conductive layer is provided on the side of the polarizing element of the one-side-protected polarizing film, which has the transparent protective film on only one surface of the polarizing element, decoloration of the end part of the polarizing element in a humidified environment can be suppressed.

Description

technical field [0001] The invention relates to a polarizing film with an adhesive layer. Moreover, this invention relates to the image display panel provided with the said polarizing film with an adhesive layer, and an image display apparatus. Background technique [0002] The image display panel of the present invention, such as a liquid crystal panel used for a liquid crystal display device, etc., is usually laminated with a polarizing film via an adhesive layer on both sides of a liquid crystal cell consisting of a pair of transparent substrates and a transparent substrate arranged between them. A liquid crystal layer is formed. On the other hand, when the above-mentioned polarizing film with an adhesive layer is attached to a liquid crystal cell when manufacturing an image display panel, the release film is peeled off from the adhesive layer of the polarizing film with an adhesive layer. Static electricity is generated when the release film is peeled off. The static ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/30B32B7/023B32B7/025B32B27/00B32B27/40C09J7/29C09J7/38C09J11/06C09J133/00C09J133/04C09J133/24G02B1/16G02F1/1333G02F1/1335G06F3/041
CPCG02B5/3033G02B1/16G02B1/04G06F3/041G02F1/133528B32B7/023B32B27/38B32B27/308C08G18/7621C08G18/7671C08G18/10C09D175/04C09D163/00C09D133/14C09D165/00C08K3/041C09J133/00C09J133/04C09J133/24C09J11/06C09J7/29C09J2301/416C09J2203/318
Inventor 木村智之石原康隆外山雄祐三田聪司
Owner NITTO DENKO CORP
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