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Polarizing film with adhesive layer, and image display device

A technology of adhesive layer and polarizing film, applied in the direction of adhesive type, ester copolymer adhesive, film/sheet adhesive, etc. The problems of liquid crystal orientation and small effect of the device are suppressed, and the reduction of optical properties is suppressed, the transparency is not easily reduced, and the compatibility is improved.

Active Publication Date: 2019-10-25
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, the generated static electricity will affect the orientation of the liquid crystal inside the liquid crystal display device, resulting in defective
In addition, display unevenness due to static electricity may sometimes occur when using a liquid crystal display device
The generation of static electricity can be suppressed, for example, by forming an antistatic layer on the outer surface of the polarizing film, but its effect is small, and there is a problem that the generation of static electricity cannot fundamentally be prevented.

Method used

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  • Polarizing film with adhesive layer, and image display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0177] (Preparation of Adhesive Composition)

[0178] With respect to 100 parts of solid content of the obtained acrylic polymer (A1) solution, 1 part of lithium bis(trifluoromethanesulfonyl)imide (manufactured by Mitsubishi Materials Electron Chemicals Co., Ltd.) was blended, and trimethylolpropane six 0.17 parts of methylene diisocyanate (manufactured by Mitsui Chemicals, Inc., trade name "Takenate D-160N"), 0.25 parts of dibenzoyl peroxide, silane coupling agent (manufactured by Shin-Etsu Chemical Co., Ltd., trade name "X- 41-1810") and 0.2 parts by weight of an acetoacetyl group-containing silane coupling agent (manufactured by Soken Chemical Co., Ltd., trade name "A-100") to prepare an acrylic adhesive solution.

[0179] (Production of polarizing film with adhesive layer)

[0180] Next, the above-mentioned acrylic adhesive solution was uniformly applied to the surface of the polyethylene terephthalate film (diaphragm) treated with a silicone-based release agent with a sp...

Embodiment 2～9、 comparative example 1～4

[0182] In Example 1, when preparing the adhesive composition, the type or usage amount of each component was changed as shown in Table 1. In the same manner as in Example 1, an adhesive layer with an adhesive layer was produced. Polarizing film.

[0183] The following evaluations were performed about the polarizing film with an adhesive layer obtained in the said Example and the comparative example. Table 1 shows the evaluation results.

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Abstract

The purpose of the present invention is to provide a polarizing film with an adhesive layer, which is not susceptible to decrease in the antistatic function and the degree of polarization even in cases where the polarizing film with an adhesive layer is exposed to a humidified environment, and which has excellent transparency. A polarizing film with an adhesive layer according to the present invention comprises a polarizing film and an adhesive layer that is provided on the polarizing film, and is characterized in that: the polarizing film has a transparent protective film on only one side ofa polarizer, while having the adhesive layer arranged on the other side of the polarizer, on which the transparent protective film is not provided; the adhesive layer is formed from an adhesive composition that contains a (meth)acrylic polymer and an alkali metal salt; and the (meth)acrylic polymer contains, as a monomer unit, a monomer (1) which comprises a nitrogen atom and a carbon-carbon double bond.

Description

technical field [0001] The present invention relates to a polarizing film with an adhesive layer comprising a polarizing film and an adhesive layer provided on the polarizing film. Moreover, this invention relates to image display devices, such as a liquid crystal display device, an organic electroluminescent display device, and PDP using the said polarizing film with an adhesive layer. Background technique [0002] For liquid crystal display devices and the like, it is essential to arrange polarizing elements on both sides of the liquid crystal cell from the viewpoint of the image forming method, and usually a polarizing film is pasted thereon. When affixing the polarizing film to a liquid crystal cell, an adhesive is usually used. In addition, in order to reduce the loss of light, for the bonding of the polarizing film and the liquid crystal cell, usually, each material is closely bonded using an adhesive. In this case, since there is no need to perform a drying process ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/30C09J7/20C09J11/00C09J133/00G02F1/1335G09F9/30
CPCC09J7/20C09J11/00C09J11/04C09J11/06C09J133/00G02B5/30G02F1/1335G09F9/00G09F9/30C09J7/385C09J133/04C09J2301/312C09J2203/318
Inventor 藤田雅人森本有外山雄祐
Owner NITTO DENKO CORP