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Pressure-sensitive adhesive layer-carrying polarizing plate and image display device

A technology of adhesive layer and polarizing plate, which is applied in the direction of lamination device, polarizing element, lamination, etc., can solve the problems of reduced adhesive force of polarizing plate, poor liquid crystal display, etc., to prevent glue shortage, not easy to warp, tight high synergistic effect

Active Publication Date: 2017-06-06
SUMITOMO CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, in addition to reducing the adhesive force of the polarizing plate due to the lack of glue, this part becomes an air layer and becomes a cause of poor display of liquid crystals.

Method used

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  • Pressure-sensitive adhesive layer-carrying polarizing plate and image display device
  • Pressure-sensitive adhesive layer-carrying polarizing plate and image display device
  • Pressure-sensitive adhesive layer-carrying polarizing plate and image display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-1

[0085] Separately prepare long polarizers, protective films, and temporary protective films, and use them as figure 1 and figure 2 In the method of lamination sequence, they are bonded by a pair of bonding rollers while conveying them separately. This was cut into a rectangular shape with a long side of 150 mm and a short side of 95 mm. Here, it is cut so that the direction in which the long sides of the rectangle extend coincides with the direction of the polarization axis of the polarizing plate.

[0086] On the other hand, a laminate in which a separator is laminated on both sides of an adhesive layer is prepared, and the laminate is as follows: image 3 Cut it out so that it becomes a shape with curved sides as shown in . Furthermore, one separator was peeled off, and the pressure-sensitive adhesive layer was bonded to the surface of the above-mentioned polarizing plate cut into a rectangular shape on the side on which the temporary protective film was not provided. T...

Embodiment 1-2、 Embodiment 1-3、 Embodiment 1-4、 Embodiment 1-5

[0094] A polarizing plate with an adhesive layer was produced in the same manner as in Example 1-1 except that the bending width of the adhesive layer was changed to 50 μm, 100 μm, 500 μm, and 1000 μm, and each measurement was performed.

Embodiment 1-6

[0096] Except having bent only one long side among the sides of the adhesive layer in Examples 1-3, the polarizing plate with an adhesive layer was manufactured similarly, and each measurement was performed.

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PUM

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Abstract

A pressure-sensitive adhesive layer-carrying polarizing plate includes a polarizing plate 1, and an adhesive layer 5 laminated on at least one surface of the polarizing plate 1. The polarizing plate 1 is a plan view quadrangle, the ends of the adhesive layer 5 extends along the prolonging direction of a side 3b and has a recessed portion 5a located inside the quadrangle with respect to at least one side 3b on the adhesive layer 5 side of the polarizing plate 1, and the distance between the recessed portion 5a and the side 3b is made larger from the end side of the side 3b toward the center side.

Description

technical field [0001] The present invention relates to a polarizing plate with an adhesive layer and an image display device. Background technique [0002] Conventionally, a polarizing plate is known as one of optical components constituting a liquid crystal display device or the like. Polarizing plates are usually laminated with a protective film on one or both sides of the polarizing plate to supplement the mechanical strength, thermal stability, water resistance, etc. of the polarizing plate. [0003] For example, in JP 2002-303730 A, a transparent protective layer (protective film) is provided on one or both surfaces of a polarizing plate as a coating layer made of a polymer or as a laminated layer of a film. [0004] In addition, adhesives are used for affixing polarizing plates to articles such as liquid crystal cells. Usually, an adhesive layer is provided thinly on the entire surface of one surface of a polarizing plate, and a separator is laminated thereon to pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/30
CPCG02B5/3041B32B37/12G02B1/14
Inventor 植田幸治藤井幹士西幸二朗
Owner SUMITOMO CHEM CO LTD
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