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Polarizing plate and image display device comprising same

A polarizing plate and spectrum technology, applied in the direction of optics, polarizing elements, optical elements, etc., can solve difficult problems such as polarizers, tearing, etc., and achieve excellent durability, light leakage suppression, and high durability effects

Active Publication Date: 2020-05-05
杉金光电(广州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, when a protective film is directly formed on an existing elongated polyvinyl alcohol-based polarizer, it is difficult to solve the problem caused by polarization at high temperature, compared with when a protective substrate is used on both surfaces as in the prior art. The problem of tearing of the polarizer caused by the stress generated by the shrinkage of the polarizer

Method used

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  • Polarizing plate and image display device comprising same
  • Polarizing plate and image display device comprising same
  • Polarizing plate and image display device comprising same

Examples

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Embodiment approach

[0218] Hereinafter, the specification will be described in more detail with reference to examples. However, the following examples are for illustrative purposes only, and the scope of this specification is not limited thereto.

[0219]

preparation example 1 to 3

[0220]

[0221] Photocurable composition 1 was prepared by adding 3.5 parts by weight of Irgacure 250 as a photoinitiator and 0.8 parts by weight of ESACURE ITX as a photosensitizer to 100 parts by weight of a photocurable composition that could The photocurable composition comprises 80 parts by weight of 3,4-epoxycyclohexylmethyl-3',4'-epoxycyclohexanecarboxylate (product name Celloxide-2021) and 20 parts by weight of 3-ethyl - 3-[(3-Ethyloxetan-3-yl)methoxymethyl]oxetane (TOAGOSEI Co., Ltd., Yaronoxetane OXT-221).

[0222] In the same manner, Composition 2 and Composition 3 having the composition of Table 1 below were prepared. The content of the photoinitiator and the content of the photosensitizer are based on the total weight of the epoxy compound and the oxetane compound remaining after excluding the photoinitiator and the photosensitizer.

[0223] [Table 1]

[0224]

[0225] *CEL2021P: 3,4-epoxycyclohexylmethyl-3',4'-epoxycyclohexanecarboxylate, CHDMDGE: 1,4-cyc...

preparation example A1 to A9

[0228]

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Abstract

The present specification provides a polarizing plate comprising: a polarizer; and a protective layer or protective layers disposed on one surface or opposite surfaces of the polarizer while being indirect contact with the polarizer, wherein the protective layer is made of a cured product of a photocurable composition for a polarizing plate protective layer, the composition including an epoxy compound and an oxetane-based compound, and an image display device comprising the polarizing plate.

Description

technical field [0001] This application claims Korean Patent Application No. 10-2017-0122706 filed with the Korean Intellectual Property Office on September 22, 2017 and Korean Patent Application No. 10-2017-0122699 filed with the Korean Intellectual Property Office on September 22, 2017 Priorities and Benefits, the entire contents of which are incorporated herein by reference. [0002] This specification relates to a polarizing plate and an image display device including the same. Background technique [0003] Existing polarizing plates for liquid crystal display devices use general polyvinyl alcohol-based polarizers and have a configuration in which a protective film such as triacetyl cellulose (TAC) is attached on at least one side surface of the polarizer. [0004] In the recent polarizing plate market, demands for low light leakage and thinning are increasing, and in order to meet these characteristics, a method of directly forming a protective film on a polarizer has ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/30G02F1/1335C09D163/00C09D171/00C09J7/20C09J163/00
CPCC09D163/00C09D171/00C09J163/00C08G59/1438C08G59/24C08G65/18G02B5/3033G02B1/14G02F1/133528G02F2201/50C08K5/375C08K5/49C08L33/08C08L71/00G02B5/30C09J7/20G02B5/305G02F2202/28B32B2457/20B32B2457/202C09K2323/03C09K2323/031
Inventor 韩相宪李美昭权润京
Owner 杉金光电(广州)有限公司
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