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Photocurable composition for encapsulating organic light emitting device, encapsulated device and encapsulated device

A technology of photocurability and composition, which is applied in the direction of electroluminescent light sources, semiconductor/solid-state device components, lighting devices, etc., and can solve problems such as performance and life degradation, electrode material oxidation, etc.

Active Publication Date: 2016-08-24
CHEIL IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, organic light-emitting diodes have a problem that despite being sealed, organic materials and / or electrode materials may be oxidized due to inflow of moisture or oxygen from the outside or due to internal or external outgassing of light-emitting diodes, resulting in deterioration of their performance and lifetime

Method used

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  • Photocurable composition for encapsulating organic light emitting device, encapsulated device and encapsulated device
  • Photocurable composition for encapsulating organic light emitting device, encapsulated device and encapsulated device
  • Photocurable composition for encapsulating organic light emitting device, encapsulated device and encapsulated device

Examples

Experimental program
Comparison scheme
Effect test

preparation Embodiment 1

[0099] Preparation Example 1: Preparation of monomers of formula 3

[0100] 400 ml of dichloromethane was charged into a 1,000 ml flask equipped with a cooling tube and a stirrer, and then 68.3 g of 4-hydroxybutyl acrylate (Aldrich) and 53 g of triethylamine were introduced thereinto. While the reaction liquid was stirred at 0°C, 60 g of diphenyldichlorosilane was slowly added to the flask, followed by stirring at 25°C for four hours. After dichloromethane was removed by distillation under reduced pressure, 103 g of a compound represented by Formula 3 was obtained by purification through a silica gel column. The obtained compound had a purity of 97% as measured by HPLC.

[0101] [Formula 3]

[0102]

preparation Embodiment 2

[0103] Preparation Example 2: Preparation of monomers of formula 4

[0104] The compound represented by Formula 4 was prepared in the same manner as in Preparation Example 1, except that phenylmethyldichlorosilane was used instead of diphenyldichlorosilane and 2-hydroxyethyl acrylate was used instead of 4-hydroxybutyl acrylate. base ester. As a result, 103 g of the compound represented by Formula 4 was obtained.

[0105] [Formula 4]

[0106]

[0107] The details of the components used in Examples and Comparative Examples are as follows:

[0108] (A) Photocurable monomer: (A1) hexyl acrylate, (A2) hexanediol diacrylate, (A3) pentaerythritol tetraacrylate (Aldrich)

[0109] (B) Silicon-containing monomer: (B1) monomer prepared in Preparation Example 1, (B2) monomer prepared in Preparation Example 2

[0110] (C) photopolymerization initiator: TPO (BASF)

Embodiment 1 to 8 and comparative example 1 to 3

[0112] Place the (A) photocurable monomer, (B) silicon-containing monomer and (C) photopolymerization initiator in the brown polypropylene bottle of 125ml with the amount listed in Table 2 (unit: parts by weight), The composition was then prepared by mixing for 3 hours using a shaker.

[0113] Compositions produced in Examples and Comparative Examples were evaluated in terms of physical properties. The results are shown in Table 2.

[0114] 1. Water vapor transmission rate: A water vapor transmission rate tester (PERMATRAN-W3 / 33, manufactured by MOCON) was used. The photocurable composition was sprayed on the Al sample holder and passed through 100mW / cm 2 It was UV-cured for 10 seconds under UV irradiation to produce a cured sample with a layer thickness of 5 μm. The water vapor transmission rate was measured using a water vapor transmission rate tester (PERMATRAN-W 3 / 33, manufactured by MOCON) at a layer thickness of 5 μm at 37.8° C. and 100% RH for 24 hours.

[0115] 2. ...

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Abstract

The present invention relates to photocurable compositions, compositions for encapsulating organic light emitting devices, encapsulated devices and encapsulated devices including barrier layers formed therefrom. The photocurable composition includes (A) a photocurable monomer, (B) a silicon-containing monomer, and (C) a photopolymerization initiator, wherein (B) the silicon-containing monomer has a structure represented by formula 1, wherein X1 and X2 are each independently O, S, NH, or NR', wherein R' is a C1 to C10 alkyl group, a C3 to C10 cycloalkyl group, or a C6 to C10 aryl group.

Description

technical field [0001] The present invention relates to photocurable compositions and encapsulated devices comprising barrier layers formed therefrom. Background technique [0002] An organic light emitting diode (OLED) refers to a structure in which a layer of a functional organic material is interposed between an anode and a cathode, wherein excitons having high energy are generated by recombining holes injected into the cathode and electrons injected into the anode. The generated excitons can return to the ground state, thereby emitting light in a specific wavelength band. Organic light emitting diodes have various advantages such as self-illumination, fast response time, wide viewing angle, ultrathinness, high definition and durability. [0003] However, organic light emitting diodes have a problem that despite being sealed, organic materials and / or electrode materials may be oxidized due to inflow of moisture or oxygen from the outside or due to internal or external de...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/18C08F222/14C08F230/08C08F2/48C08L35/02H01L33/56
CPCG03F7/027G03F7/0755Y10T428/239H10K50/8445C08F30/08C08L43/04G03F7/00H01L23/29H05B33/12H10K50/844
Inventor 南成龙李昌珉崔承集权智慧禹昌秀李连洙河京珍
Owner CHEIL IND INC
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