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One-side-protected polarizing film with pressure-sensitive adhesive layer, image display device, and continuous production method therefor

A technology of adhesive layer and polarizing film, applied in the direction of adhesive type, ester copolymer adhesive, polarizing element, etc. effect of seam

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

Furthermore, the one-side protective polarizing film with an adhesive layer is thinner than a polarizing film with a protective film on both sides, so it is easy to cause the polarizing film to bend during handling. ,fracture

Method used

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  • One-side-protected polarizing film with pressure-sensitive adhesive layer, image display device, and continuous production method therefor
  • One-side-protected polarizing film with pressure-sensitive adhesive layer, image display device, and continuous production method therefor
  • One-side-protected polarizing film with pressure-sensitive adhesive layer, image display device, and continuous production method therefor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～18、 comparative example 1～3

[0239]

[0240] The produced pressure-sensitive adhesive layers A to S were bonded to the polarizer side of the produced one-side protective polarizing film A or B, respectively, to produce a single-side protective polarizing film with an pressure-sensitive adhesive layer.

[0241] The following measurements and evaluations were performed on the pressure-sensitive adhesive layer and the single-sided protective polarizing film with the pressure-sensitive adhesive layer obtained above. The results are shown in Table 2.

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Abstract

The purpose of the present invention is to provide a one-side-protected polarizing film having a pressure-sensitive adhesive layer and being capable of suppressing defects resulting from nanoslits without having to provide a coating layer between a polarizer and a pressure-sensitive adhesive layer. This one-side-protected polarizing film with a pressure-sensitive adhesive layer has: a one-side-protected polarizing film having a protective film disposed on only one surface of a polarizer; and a pressure-sensitive adhesive layer that is disposed, either directly or via a coating layer, on the polarizer side of the one-side-protected polarizing film, the polarizing film being characterized in that the pressure-sensitive adhesive layer has a storage elastic modulus of at least 7.0*107 Pa at minus 40 DEG C.

Description

technical field [0001] The present invention relates to a single-side protective polarizing film with an adhesive layer having a single-side protective polarizing film provided with a protective film only on one surface of a polarizer, and an adhesive layer. The one-side protective polarizing film with an adhesive layer can be used alone or in the form of an optical film laminated thereon to form an image display device such as a liquid crystal display device (LCD) or an organic EL display device. Background technique [0002] For liquid crystal display devices, it is essential to arrange polarizing films on both sides of the glass substrate forming the surface of the liquid crystal panel in view of its image forming method. As for the polarizing film, one or both sides of a polarizer made of a polyvinyl alcohol film and a dichroic material such as iodine are generally used. Polarizing film. [0003] When bonding the above-mentioned polarizing film to a liquid crystal cell...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/30B32B27/00B32B27/30C09J7/38C09J133/06G02F1/1335
CPCG02B5/30B32B27/30C09J133/06C09J7/38G02F1/1335
Inventor 森本有外山雄祐藤田雅人
Owner NITTO DENKO CORP
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