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Polarizing plate and image display device including the same

A technology of polarizing plates and polarizers, applied in optics, polarizing elements, optical elements, etc., can solve problems such as polarizer tearing, achieve minimum yellowing, minimize cost and process, and excellent durability Effect

Active Publication Date: 2022-07-12
SHANJIN OPTOELECTRONICS (GUANGZHOU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, when a protective film is directly formed on the existing elongated polyvinyl alcohol-based polarizer, compared with when a protective substrate is used on both surfaces in the prior art, a problem caused by shrinkage of the polarizer at high temperature The problem of the polarizer being torn due to stress has been difficult to solve

Method used

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  • Polarizing plate and image display device including the same
  • Polarizing plate and image display device including the same
  • Polarizing plate and image display device including the same

Examples

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Embodiment approach

[0234] Hereinafter, the present 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.

[0235]

preparation example A1 and A2

[0236]

[0237] The photocurable composition A1 was prepared by adding 3 parts by weight of Irgacure 250 as a photoinitiator and 1 part by weight of ESACUREITX as a photosensitizer to 100 parts by weight of the photocurable composition The cured composition contained 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., subaronite OXT-221).

[0238] In the same manner, Composition A2 having the composition of Table 1 below was 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.

[0239] [Table 1]

[0240]

[0241] *CEL2021P: 3,4-Epoxycyclohexylmethyl-3',4'-epoxycyclohexanecarboxylate, CHDMDGE: 1,4-cyclohexyldimethanol diglycidyl ether

...

preparation example B1 to B9

[0244]

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PUM

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Abstract

The present specification provides a polarizing plate and an image display device including the polarizing plate, the polarizing plate including a polarizer; and a protection provided on one surface or both surfaces of the polarizer directly adjoining the polarizer layer, wherein the protective layer is a cured material of a photocurable composition for a polarizer protective layer comprising an epoxy compound and an oxetane-based compound.

Description

technical field [0001] This application claims priority to and the benefit of Korean Patent Application No. 10-2017-0122686, filed with the Korean Intellectual Property Office on September 22, 2017, 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 a general polyvinyl alcohol-based polarizer, 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 polarizer market, there is an increasing demand for low light leakage and thinning, and in order to meet these characteristics, a method of directly forming a protective film on the polarizer has been examined instead of using the existing protective film formed in advance base. [0005] However, when the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/30G02F1/1335C09J163/00C09J7/20
CPCC09J163/00C08G65/18C08G59/226G02B5/3033G02B1/14G02F1/133528G02F2201/50C08K5/375C08K5/49C08L71/00C08L33/08G02B5/30C09J7/20C09J2301/312C09J2301/124G02B5/3025G02F1/1335B32B2457/20B32B2457/202C09K2323/031C09K2323/03
Inventor 李美昭韩相宪权润京赵海成李应淇石镇雅崔守延金唯彬吕俊九
Owner SHANJIN OPTOELECTRONICS (GUANGZHOU) CO LTD
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