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Cover window substrate and image display device comprising same

一种基板、视窗的技术，应用在视窗基板及具备其的图像显示装置领域，能够解决卷曲、缺乏柔性、难以达成强化玻璃高硬度等问题，达到挠曲减少、耐指纹性能优异、优异耐久性及光学特征的效果

Active Publication Date: 2018-04-20
DONGWOO FINE CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in the case of general multifunctional photocurable composite resins such as (meth)acrylates and epoxy resins, there are disadvantages in that not only it is difficult to achieve a high hardness corresponding to tempered glass, but also that there is a significant occurrence of cracking during curing. Curl phenomenon caused by shrinkage, and lack of flexibility is not suitable as a protective window substrate applied to flexible displays

Method used

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  • Cover window substrate and image display device comprising same
  • Cover window substrate and image display device comprising same
  • Cover window substrate and image display device comprising same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0150]

[0151] The polymethyl methacrylate film was heated at 100°C for 120 minutes, cooled at 60°C for 10 minutes, and cooled at room temperature (25°C) to produce a polymer substrate film (A-1).

[0152]

[0153]After coating the organic-inorganic hybrid hard coat composition with the components and compositions listed in the following Table 1 on one side of the heat-treated polymer base film, dry it at 90 for 90 seconds, and apply ultraviolet rays with wavelengths of 315 and 365 nm The light in the area is 600mJ / cm 2 Curing proceeded to form a hard coat layer with a final thickness of 30 μm.

[0154] Next, a non-display portion light-shielding layer was formed on the opposite surface of the polymer base film on which the hard coat layer was formed, followed by drying at 80°C for 60 minutes.

[0155] After that, a PET base film with a peeling force of 80 N / 25 mm and a shrinkage rate of 60 ppm under the conditions of 60 and 90% RH was bonded using an acrylic adhesive on...

Embodiment 2

[0158] A window substrate was produced in the same manner as in Example 1 except that the thickness of the hard coat layer was 20 μm.

Embodiment 3

[0160] A window substrate was produced in the same manner as in Example 1 except that the thickness of the hard coat layer was 10 μm.

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Abstract

The present invention relates to a cover window substrate and, more specifically, to a cover window substrate and an image display device comprising the same, the cover window comprising an organic / inorganic hybrid hard coating layer on at least one surface of a polymer base film, and satisfying a pencil hardness of 4H or higher under a load of 1kg, thereby significantly reducing the occurrence ofwarpage of the substrate under severe conditions of high temperature and high humidity so as to implement excellent durability and optical characteristics when applied to a product, and achieve excellent anti-finger print performance of a surface.

Description

technical field [0001] The present invention relates to a cover window substrate and an image display device including the same. More specifically, the present invention relates to a cover window substrate that minimizes warping of the substrate even under conditions of high temperature and high humidity. Background technique [0002] Recently, various display devices have a window cover for protecting the display on the display panel to protect the display panel from scratches or external shocks, and in most cases, tempered glass for the display is used as the window cover . Reinforced glass for displays is thinner than ordinary glass, but it is made of high strength and scratch-resistant. [0003] However, tempered glass has a disadvantage that it is not suitable for light weight of portable devices due to its heavy weight, and not only that, it is difficult to achieve unbreakable properties (unbreakable) due to its fragility against external impacts, and it has a limited...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09F9/00G09F9/30C08J7/04C08J5/18C08L101/00C08J7/043C08J7/046
CPCC09D4/00G02B1/14B32B2307/748B32B2307/308B32B27/08B32B23/08B32B2307/708B32B2307/7246B32B2250/03B32B2307/584B32B2255/10B32B2255/24B32B2255/26B32B2307/536B32B2307/732B32B27/285B32B27/286B32B27/281B32B27/34B32B2307/412B32B27/32B32B27/325B32B2255/20B32B27/36B32B27/365B32B2270/00B32B7/12B32B2264/105B32B2250/244B32B2250/242B32B2457/20B32B7/06B32B3/02B32B2307/4026B32B27/302C08J7/043C08J7/046C08J7/0427C08F220/24C08L101/00G09F9/00G09F9/30B32B27/14B32B27/28C09D133/08
Inventor 金真镐权赫焕李东振
Owner DONGWOO FINE CHEM CO LTD
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