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Optical ultraviolet curable resin composition, cured product and display device

A curable resin and display device technology, applied in the direction of static indicators, etc., can solve the problems of high manufacturing cost, high viscosity of resin composition, peeling, etc., and achieve excellent workability, excellent impact resistance and absorption, and moisture resistance long-term stable effect

Inactive Publication Date: 2012-07-11
NIPPON SHOKUBAI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the deterioration and yellowing of rubber-based polymers under severe conditions of high temperature and high humidity not only reduce optical properties, but also cause elongation and viscoelastic properties to decrease. Bubbles and peeling at the interface may cause degradation of the display performance of the display device
[0013] In addition, when a high-viscosity material such as polyisoprene-based acrylate is used, the viscosity of the obtained resin composition becomes high, and it takes too much time to fill, so there is a possibility that the productivity will be poor and the production cost will increase.

Method used

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  • Optical ultraviolet curable resin composition, cured product and display device
  • Optical ultraviolet curable resin composition, cured product and display device
  • Optical ultraviolet curable resin composition, cured product and display device

Examples

Experimental program
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Effect test

preparation example Construction

[0131] [Preparation of ultraviolet curable resin composition for optics]

[0132] The ultraviolet curable resin composition for optics of the present invention can be prepared by mixing the above components, and is usually in the form of a viscous liquid. Specifically, the viscosity is 300 to 15000 mPa·s, preferably 500 to 10000 mPa·s, more preferably 500 to 7000 mPa·s, particularly preferably 500 to 5000 mPa·s, and most preferably 500 to 3000 mPa·s. In the resin composition of the present invention, only the polymer (A) as the main component is blended, that is, without blending diluent compounds such as plasticizers and polymerizable monomers, it is possible to obtain a composition having a relatively low viscosity in the above-mentioned range. Therefore, excellent workability such as easy filling can be obtained, and the shrinkage rate of the cured product due to the compounding of the low-molecular-weight compound for dilution can be suppressed to a low level.

[0133] In addi...

Embodiment

[0162] Hereinafter, the present invention will be specifically described with examples, but the present invention is not limited to the description of the following examples.

[0163] It should be noted that the "parts" appearing in the examples are based on weight unless otherwise specified.

[0164]

[0165] Synthesis of A1:

[0166] Polypropylene glycol with a number average molecular weight Mn of 6000 (molecular weight distribution (Mw / Mn) = 1.06) was added as a polyether polyol (a-1) into a reactor equipped with a thermometer, a cooler, a gas introduction pipe, and a stirrer (Product model PREMINOL 4006 manufactured by Asahi Glass Co., Ltd.) 300 g, 0.15 g of p-methoxyphenol, and 0.15 g of dibutyltin dilaurate, and the mixture was heated to 70°C while stirring. Next, as an isocyanate group-containing unsaturated carbonyl group (a-2), 15.5 g of 2-methacryloyloxyethyl isocyanate (manufactured by Showa Denko, product model KARENZ MOI) was added dropwise over 2 hours (with respect to...

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Abstract

The invention provides an optical ultraviolet curable resin composition, a cured product and a display device, wherein the ultraviolet curable resin composition is a liquid resin composition and cured by irradiation with ultraviolet light; the heat resistance, the light resistance, and the moisture resistance, namely optically superior qualities are stably kept for a long time and the re-stripping property, the shock-resistance absorption and operation are excellent. The optical ultraviolet curable resin composition comprises (A) a polymer obtained by reacting polyether glycol (a-1) with alpha, beta unsaturated carbonyl compound (a-2) with function group reacted with the hydroxyl group; and (B) a photopolymerization initiator, wherein the functional group is preferably isocyanic acid ester or carboxyl group as the unsaturated carbonyl, preferably a (meth ) acryl. The resin composition is used for laminating at least two kinds of components selected from a component of the display device namely a display panel, a protection plate, and a laminar function part.

Description

Technical field [0001] The present invention relates to image display devices such as mobile phones, LCD TVs, plasma TVs, electronic books, and touch panel devices incorporating liquid crystal displays, which are used to laminate display panels, protective panels, touch panels, etc., which are called sheet-like functional components The ultraviolet curable resin composition for optics used for each component, its cured product, and a display device using the cured product. Background technique [0002] In a flat panel display such as a liquid crystal display panel, when a certain impact is applied, in order to prevent the impact from being transmitted to the display panel, the display panel and a transparent protective plate including an acrylic plate, a glass plate, etc. that protect the display panel Set a certain gap between. [0003] When the gap is an air layer, the reflection loss of light caused by the difference between the refractive index of the material constituting the...

Claims

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Application Information

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IPC IPC(8): C08F290/06C08L51/08G02F1/133
Inventor 川田雄一真岛宣明
Owner NIPPON SHOKUBAI CO LTD
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