One-sided protective polarizing film with adhesive layer, image display device and continuous manufacturing method thereof
A technology of adhesive layer and polarizing film, applied in the direction of adhesive type, ester copolymer adhesive, adhesive, etc., can solve the problems of easy fracture, improve productivity, and suppress the generation of nano-slits Effect
Active Publication Date: 2021-12-21
NITTO DENKO CORP
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- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Therefore, the one-side protective polarizing film with an adhesive layer using a conventional thin polarizer has the problem of being easily broken when peeled from the glass substrate or ITO film.
Method used
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Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1～22、 comparative example 1～4
[0245]
[0246] The produced pressure-sensitive adhesive layers A to X were bonded to the polarizer side of the produced one-side protective polarizing film A or B, respectively, and a single-side protective polarizing film with an pressure-sensitive adhesive layer was produced.
[0247] 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
An object of the present invention is to provide a single-sided protective polarizing film with an adhesive layer that can suppress defects due to nano-slits without providing a coating layer between the polarizer and the adhesive layer, and is excellent in reworkability . The single-side protective polarizing film with an adhesive layer of the present invention has a single-sided protective polarizing film having a protective film only on one side of a polarizer, and directly or via the polarizer side of the above-mentioned single-sided protective polarizing film. The coating layer has an adhesive layer, and the storage modulus of the above-mentioned adhesive layer at -40°C is 7.0×10 7 More than Pa, the adhesive force of the above-mentioned adhesive layer relative to the surface of the alkali-free glass at a peeling speed of 300mm / min and a peeling angle of 90 degrees is below 8N / 25mm, and the above-mentioned adhesive layer is relative to the glass with the ITO film. The adhesive force of the surface of the ITO film at a peeling speed of 300mm / min and a peeling angle of 90 degrees is below 8N / 25mm.
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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IPC IPC(8): G02B5/30B32B27/00B32B27/30C09J7/38C09J11/00C09J133/06G02F1/1335
CPCB32B27/00B32B27/30C09J7/38C09J11/00C09J133/06G02B5/30G02F1/1335
Inventor 森本有外山雄祐藤田雅人江原卓
Owner NITTO DENKO CORP
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