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Polarizing plate, composite polarizing plate and liquid crystal display device

一种偏振板、偏振膜的技术，应用在复合偏振板,液晶显示装置领域，能够解决不能满足液晶显示装置薄型轻量化等问题，达到优异防眩功能、减小厚度的效果

Active Publication Date: 2019-05-17
SUMITOMO CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, the conventional anti-glare treatment is performed on a transparent resin film as a protective layer of a polarizing plate, and the polarizing plate laminated with the anti-glare film cannot meet the market demand for thinner and lighter liquid crystal display devices in recent years.

Method used

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  • Polarizing plate, composite polarizing plate and liquid crystal display device
  • Polarizing plate, composite polarizing plate and liquid crystal display device
  • Polarizing plate, composite polarizing plate and liquid crystal display device

Examples

Experimental program
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Effect test

manufacture example 1

[0278] (Manufacturing example 1: Production of polarizing film)

[0279] After immersing a polyvinyl alcohol film with a thickness of 75 μm having an average degree of polymerization of about 2400 and a degree of saponification of 99.9 mol% or more in pure water at 30°C, it is immersed in pure water at 30°C with a weight ratio of iodine / potassium iodide / water of 0.02 / 2 / 100 in aqueous solution for iodine staining. Then, it immersed in the aqueous solution whose weight ratio of potassium iodide / boric acid / water was 12 / 5 / 100 at 56.5 degreeC, and performed boric-acid treatment (crosslinking treatment). Next, after washing|cleaning with the pure water of 8 degreeC, it dried at 65 degreeC, and the polarizing film which adsorb|sucked iodine to polyvinyl alcohol and it was oriented was obtained. Stretching is mainly carried out in the process of iodine dyeing and boric acid treatment, and the total stretching ratio is 5.3 times.

manufacture example 2

[0280] (Manufacturing example 2: Preparation of active energy ray-curable resin composition A)

[0281] The active energy ray-curable resin composition A was prepared by mixing the following components.

[0282] 3,4-epoxycyclohexylmethyl 3,4-epoxycyclohexanecarboxylate (CELLOXIDE 2021P, manufactured by Daicel Chemical Co.): 35 parts

[0283] Bis[(3-ethyl-3-oxetanyl)methyl]ether (ARON OXETANE OXT-221, manufactured by Toagosei Co., Ltd.): 15 parts

[0284] - Diacrylate (A-DOG, manufactured by Shin-Nakamura Chemical Co., Ltd.) of an acetal compound of hydroxytrimethylacetaldehyde and trimethylolpropane: 50 parts

[0285] 2-Hydroxy-2-methyl-1-phenylpropan-1-one (DAROCUR 1173, manufactured by Ciba, photoradical polymerization initiator): 2.5 parts

[0286] 4. 4'-bis(diphenylsulfonium)diphenylthiobishexafluorophosphate-based photocationic polymerization initiator (SP-150, manufactured by ADEKA Corporation): 2.5 parts.

[0287] In addition, the above-mentioned A-DOG (diacrylate es...

manufacture example 3

[0289] (Manufacturing example 3: Preparation of active energy ray-curable resin composition B)

[0290] The active energy ray-curable resin composition B was prepared by mixing the following components.

[0291] 3,4-epoxycyclohexylmethyl 3,4-epoxycyclohexanecarboxylate (CELLOXIDE 2021P, manufactured by Daicel Chemical Co.): 35 parts

[0292] Bis[(3-ethyl-3-oxetanyl)methyl]ether (ARON OXETANE OXT-221, manufactured by Toagosei Co., Ltd.): 15 parts

[0293] ・1,3,5-tris(2-hydroxyethyl)isocyanurate triacrylate (A-9300, manufactured by Shin-Nakamura Chemical Industry Co., Ltd.): 50 parts

[0294] 2-Hydroxy-2-methyl-1-phenylpropan-1-one (DAROCUR 1173, manufactured by Ciba, photoradical polymerization initiator): 2.5 parts

[0295] 4. 4'-bis(diphenylsulfonium)diphenylthiobishexafluorophosphate-based photocationic polymerization initiator (SP-150, manufactured by ADEKA Corporation): 2.5 parts.

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Abstract

This invention uses polyvinyl alcohol (PVA)-resin to attach on one side of a polarizing film that is aligned with dichroism pigment and has a total luminous transmittance below 50%, to directly form an anti-polarizing plate that contains curable compositions including active energy ray-curable composition and active energy ray-curable resin composition with polymerization initiators, and composite polarizing plate and liquid crystal display device using the same. The present invention provides a thin and lightweight polarizing plate with excellent durability, in which the antiglare layer is directly formed on the surface of the polarizing film, and composite polarizing plate and liquid crystal display device using the same.

Description

[0001] This application is a divisional application of an application with a filing date of June 25, 2010, an application number of 201010214559.6, and an invention title of "polarizing plate, composite polarizing plate and liquid crystal display device". technical field [0002] This invention relates to the polarizing plate used for a liquid crystal display device etc., Specifically, It is related with the polarizing plate provided with the antiglare layer on the polarizing film. In addition, the present invention also relates to a composite polarizing plate and a liquid crystal display device using the polarizing plate. Background technique [0003] A polarizing plate can be used as an optical component constituting a liquid crystal display device. Currently, a generally used polarizing plate has a structure in which a protective film made of a transparent resin film is laminated on one or both surfaces of a polarizing film via a water-based adhesive or the like. As such...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/30G02F1/1335
CPCG02B5/3083G02F1/133528G02F1/133531G02B5/02G02B5/30G02F1/1335
Inventor 八寻智惠藤长将司古谷勉
Owner SUMITOMO CHEM CO LTD
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