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Sealant for display

A display and encapsulant technology, applied in sealing devices, instruments, adhesives, etc., can solve problems such as display components that have not yet been realized

Active Publication Date: 2019-04-30
NIPPON KAYAKU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, an adhesive for display elements having performance sufficient to be compatible with the above-mentioned flexible substrate has not yet been realized.

Method used

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  • Sealant for display
  • Sealant for display
  • Sealant for display

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～10、 comparative example 1～4

[0123] Component (A), component (H ) at 90°C for heating and dissolving, then cooled to room temperature, adding components (C), component (D), component (E), component (F), component (G), component (I), stirred, and then using three Dispersion was performed with a roll machine, and liquid crystal sealing agent Examples 1-10 were prepared by filtering through a metal mesh (635 mesh). In addition, component (A) was removed to prepare comparative examples 1 and 2, and comparative examples 3 and 4 were prepared by using component (A') instead of component (A).

[0124] [Elastic modulus measurement]

[0125] For the liquid crystal sealant produced in Examples and Comparative Examples, the liquid crystal sealant made into a thin film with a thickness of 100 μm sandwiched between polyethylene terephthalate (PET) films was used using a metal halide lamp (USHIO Denki Co., Ltd.) irradiation 3000mJ / cm 2 (100mW / cm2 UV rays for 30 seconds) to cure, and then put into an oven at 120° C. ...

Synthetic example 3

[0148] B-1-4: Partial acrylated product of bisphenol A epoxy resin (synthesis example 4)

[0149] B-1-5: Lactone-modified hydroxypivalic acid neopentyl glycol diacrylate (trade name "KAYARAD HX-620" manufactured by Nippon Kayaku Co., Ltd.)

[0150] B-1-6: Polyester-type urethane acrylate (manufactured by Nippon Kayaku Co., Ltd.; KAYARAD UX-3204)

[0151] B-2-1: Bisphenol A epoxy resin (trade name "RE-310S" manufactured by Nippon Kayaku Co., Ltd.)

[0152] C-1: Pentaerythritol tetrakis (3-mercaptobutyrate) (Showa Denko Co., Ltd. product name "Karenz MT PE1")

[0153] D-1: Polymethacrylate-based organic fine particles (trade name "F-351S" manufactured by Aica Industry Co., Ltd.)

[0154] E-1: Spherical silica (trade name "Sunseal SSP-07M" manufactured by Tokuyama Co., Ltd.)

[0155] F-1: 3-glycidoxypropyltrimethoxysilane (trade name "Sila Ace S-510" manufactured by JNC Corporation)

[0156] F-2: N-2(aminoethyl)-3-aminopropyltriethoxysilane (manufactured by Shin-Etsu Chemical...

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Abstract

The invention relates to a sealant for displays. The present invention relates to an adhesive for displays, which can also be applied to flexible displays and curved displays. More specifically, the present invention relates to an adhesive for displays, which satisfies specific characteristics. The adhesive for displays can have both flexibility and low moisture permeability, and can be particularly used as an adhesive for flexible displays and curved displays. The adhesive for display, wherein the glass transition temperature of the cured product of the display adhesive measured by a dynamicviscoelasticity measurement method is 90 DEG C or higher, and the elasticity modulus of the display adhesive measured by a Tensilon universal testing machine at 22 DEG C is 2000 MPa or lower.

Description

technical field [0001] The present invention relates to an encapsulant (sealing agent) for a display that can also be applied to a flexible display or a curved display. More specifically, the present invention relates to an encapsulant for a display that satisfies a specific relationship between glass transition temperature and elastic modulus. Since this encapsulant for displays can have both flexibility and low moisture permeability, it can be used particularly as an encapsulant for flexible displays and curved displays. Background technique [0002] As for the sealing compound for displays, the sealing compound for liquid crystals, the sealing compound for organic electroluminescence displays, the adhesive agent for touch panels etc. are mentioned, for example. These materials are required to have excellent curability, low outgassing, and no damage to display elements in common. [0003] Also, recently, curved displays and flexible displays have been developed and comme...

Claims

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Application Information

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IPC IPC(8): C09J163/10C09J147/00C09J11/08C09J11/06C09J11/04G02F1/1339
CPCG02F1/1339C09J11/04C09J11/06C09J11/08C09J147/00C09J163/10C08L2203/206C08L2205/03C08L2205/025C08L2205/035C08L47/00C08L33/04C08K13/04C08K7/18C08K3/36C08K5/5435C08K5/25C08L63/10C08K5/372C09K3/10C09K2003/1059C09K2200/0607C09K2200/0441C09K2003/1062
Inventor 武藤正嘉内藤正弘田上胜大
Owner NIPPON KAYAKU CO LTD
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