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Polarizing plate, method for fabricating same, and image display apparatus using same

A technology of polarizers and polarizers, applied in other household appliances, chemical instruments and methods, applications, etc., can solve the problems of liquid crystal panel contact, light leakage or color difference, image quality deterioration, etc., to reduce color change and improve durability And water resistance, high image quality effect

Active Publication Date: 2012-11-07
SHANJIN OPTOELECTRONICS SUZHOU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Meanwhile, in the case of using a polarizer having the above-mentioned bending phenomenon, unnecessary contact with the liquid crystal panel may easily occur; and in the case of mounting the polarizer in a display device module, a large amount of stress may be generated, and Therefore, contact with the container occurs, causing light leakage or chromatic aberration (mura) phenomenon, resulting in poor image quality

Method used

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  • Polarizing plate, method for fabricating same, and image display apparatus using same
  • Polarizing plate, method for fabricating same, and image display apparatus using same
  • Polarizing plate, method for fabricating same, and image display apparatus using same

Examples

Experimental program
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Effect test

Embodiment 1

[0106] Polarizers were prepared by passing a polyvinyl alcohol (PVA) film (manufactured by Kurary Co., Ltd., with a degree of polymerization of 2400) through a flushing tank and an expansion tank, 2 The polarizer was dyed in an aqueous solution of boric acid and KI, and then the polarizer was stretched in an aqueous solution containing boric acid and KI until the film stretched five times.

[0107] Then, a 60-μm-thick triacetylcellulose (TAC) film was placed on one side of the polarizer, and an adhesive film protected by a PE separation film was placed on the other side of the polarizer. Here, the adhesive film consists of two adhesive layers each having modulus values ​​of 270 MPa and 0.02 MPa.

[0108] Then, an aqueous solution of a PVA-type adhesive was placed between the polarizer and the TAC film and between the polarizer and the adhesive film from which the PE separation film was removed, and they were laminated by a laminator, and in Dry at 80°C for 8 minutes to prepar...

experiment Embodiment 1

[0118] Experimental Example 1: Evaluation of Curl Incidence Rate

[0119] The degree of curling of the polarizer samples prepared according to Examples and Comparative Example 1 was observed with naked eyes. Figure 5 is a photograph showing a polarizer prepared according to Comparative Example 1, and Figure 6 is a photograph showing polarizers prepared according to Examples.

[0120] Such as Figure 5 and Figure 6 As shown, the polarizer sample of Comparative Example 1 has relatively serious curl occurrence, while the polarizer sample of Example has less curl occurrence.

experiment Embodiment 2

[0121] Experimental Example 2: Evaluation of waterproofness

[0122] The polarizer prepared according to Example and Comparative Example 1 was cut into a size of 5 cm wide and 5 cm long, and the polarizer was laminated on a glass substrate with a thickness of 1.1 mm, and then the polarizer was immersed in a water tank at 60 ° C, for water resistance assessment.

[0123] Figure 7 It is a group of photos showing that the peeling degree of the polarizer of Comparative Example 1 changes with time; as Figure 7 As shown, the polarizer sample of Comparative Example 1 was completely peeled off, while the peeling degree of the polarizer sample of the embodiment was relatively low.

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Abstract

The present invention relates to a polarizing plate, to a method for fabricating same, and to an image display apparatus using same. The polarizing plate includes: a polarizing device; a first adhesive layer formed on a surface of the polarizing device; a second adhesive layer formed on another surface of the polarizing device; a protective film attached to the top of the first adhesive layer; and a sticky layer formed on a bottom of the second adhesive layer.

Description

technical field [0001] The present invention relates to a polarizer for an image display device and a preparation method thereof, in particular, to a polarizer with reduced bending phenomenon and a preparation method thereof. Background technique [0002] Generally, a polarizer is formed by adhering a triacetyl cellulose (TAC) film as a protective film to the polarizer, in which molecular chains based on polyvinyl alcohol (hereinafter referred to as PVA) are aligned in a certain direction. Up orientation, and it contains iodine compound or dichroic polarizing material. Here, the polarizer and the protective film are generally bonded to each other by a water-based adhesive made of a polyvinyl alcohol-based aqueous solution. [0003] Meanwhile, in the case of a liquid crystal display device driven in an in-plane switching (IPS) liquid crystal mode, it is known that when using a polarizer with a protective film attached to one side and an adhesive layer attached to the other s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/30G02F1/1335
CPCG02F1/1335G02B5/3033B32B7/06B32B7/12B32B23/08B32B23/20B32B27/08B32B27/286B32B27/302B32B27/304B32B27/306B32B27/308B32B27/32B32B27/36B32B27/365B32B2307/412B32B2307/42B32B2307/71B32B2307/712B32B2307/748B32B2551/00G02B5/30
Inventor 南星鉉權奇玉羅鈞日
Owner SHANJIN OPTOELECTRONICS SUZHOU CO LTD