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Antireflaction hard coating film and method of preparing the same

An anti-reflection and hard coating technology, applied in anti-reflection coatings, coatings, sputtering coatings, etc., can solve problems such as difficulty in achieving high hardness, curling, and insufficient flexibility, and achieve increased hardness and curl suppression Characteristics, effects of excellent hardness

Active Publication Date: 2020-03-03
SK INNOVATION CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In general hard coating, a combination of a resin containing a photocurable functional group such as (meth)acrylate (metha)acrylate or epoxy, a curing agent or a curing catalyst, and other additives is used. However, it has the following disadvantages, that is, it is difficult to achieve high hardness corresponding to tempered glass, and serious curling (curl) phenomenon occurs due to shrinkage during curing, and the flexibility is not sufficient, so it is not suitable as a flexible display. protective window substrate

Method used

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  • Antireflaction hard coating film and method of preparing the same
  • Antireflaction hard coating film and method of preparing the same
  • Antireflaction hard coating film and method of preparing the same

Examples

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Effect test

preparation example 1

[0199] Combine 2-(3,4-epoxycyclohexyl) ethyl trimethoxysilane (ECTMS, TCI) and water (H 2 O, Sigma-Aldrich (Sigma-Aldrich) was mixed at a ratio of 24.64g:2.70g (0.1mol:0.15mol) and added to a 250mL 2-neck flask. Then, 0.1 mL of tetramethylammonium hydroxide (Sigma-Aldrich) catalyst and 100 mL of tetrahydrofuran (Sigma-Aldrich) were added to the mixture, and the mixture was stirred at 25°C for 36 hours. After that, the layers are separated, the product layer is extracted with dichloromethane (Sigma-Aldrich), and the water in the extract is removed with magnesium sulfate (Sigma-Aldrich), and the solvent is vacuum dried to obtain epoxy silicon Oxyane resin. As a result of gel permeation chromatography (Gel Permeation Chromatography, GPC) measurement, the weight average molecular weight of the epoxy siloxane resin was 2500.

Embodiment 1

[0201] 30 parts by weight of the epoxy siloxane resin prepared in Preparation Example 1 and 15 parts by weight of (3',4'-epoxycyclohexyl) methyl 3,4-epoxycyclohexane carboxylate (Daicel Company, Celloxide 2021P), 1 part by weight of 4-acetoxyphenyldimethylsulfonium hexafluoroantimonate (Sanshin Company, SI-60), 1 part by weight of (4 -Methylphenyl)[4-(2-methylpropyl)phenyl] iodonium hexafluorophosphate, 0.3 parts by weight of silicone polymer (BYK Chemical Company, BYK3560, leveling agent) and 52.7 parts by weight Parts of methyl ethyl ketone (Sigma-Aldrich) were mixed to prepare a composition for forming a hard coat layer.

[0202] The composition for forming a hard coat layer was coated on a colorless polyimide (cPI) film with a thickness of 80 μm by the Meyer rod method, and left to stand at a temperature of 60° C. for 5 minutes. Using high-pressure metal lamp at 1J / cm 2 UV was irradiated, and then cured at a temperature of 120° C. for 15 minutes to form a hard coat with a th...

Embodiment 2

[0207] In Example 1, in addition to using sputtering ZrO 2 Except that the high refractive index layer with a refractive index of 2.2 was formed instead of the high refractive index layer, an anti-reflection hard coating film was prepared by the same method as in Example 1.

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Abstract

Provided is a hard coating film in which a hard coating layer having a water contact angle of 90 degrees or less, a high refractive index layer, and a low refractive index layer are laminated on a substrate, the film having suppressed curling, and excellent hardness and antireflection performance.

Description

Technical field [0001] The invention relates to an anti-reflection hard coating film and a preparation method thereof. Background technique [0002] In recent years, thin display devices using flat panel display devices such as liquid crystal display devices or organic light emitting diode displays have attracted attention. In particular, these thin display devices are implemented in the form of touch screen panels, and are widely used in smart phones, tablet PCs, and various wearable devices, which are characterized by portability Various smart devices (smart device). [0003] In such a portable display device based on a touch screen panel, in order to protect the display panel from scratches or external impact, a window cover for protecting the display is provided on the display panel. In most cases, tempered glass for the display is used as the window. Cover plate. Tempered glass for displays is characterized by being thinner than general glass, but it has high strength and s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B1/115G02B1/14
CPCG02B1/115G02B1/14C09D5/006G02B1/11G02B1/18C09D183/06C08G77/14C08J7/0423C08J2483/06C08J7/046B05D7/04B05D2420/01C08L83/04C08K5/36B05D2504/00G02B1/111C09D5/002C23C14/3464C23C14/0036C23C14/0694C23C14/083C23C14/10C23C14/086C09D1/00Y10T428/31Y10T428/31504Y10T428/31511Y10T428/31663Y10T428/31678
Inventor 安钟南张太硕高秉瑄朴尽秀尹浩哲
Owner SK INNOVATION CO LTD
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