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Sealing agent for organic electroluminescence display device

A technology for electroluminescence display and display components, which is applied in the direction of electroluminescence light sources, electrical components, electric light sources, etc., can solve problems such as degradation and reduction of luminous characteristics, and achieve the effect of excellent wettability and good efficiency

Pending Publication Date: 2021-01-08
DENKA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, organic EL display elements have problems of being degraded by moisture and lowering luminous characteristics

Method used

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  • Sealing agent for organic electroluminescence display device
  • Sealing agent for organic electroluminescence display device
  • Sealing agent for organic electroluminescence display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0230] 100 parts by mass of trifluoromethyl methacrylate (manufactured by Tokyo Chemical Industry Co., Ltd.) and 5 parts by mass of 2,4,6-trimethylbenzoyldiphenylphosphine oxide (TPO) (manufactured by BASF Japan Co., Ltd.) were mixed , to prepare the sealant. In addition, content of a fluorine atom with respect to the total amount of a monomer component was 32 mass %. The obtained sealing compound was evaluated by the evaluation method shown below. In addition, the obtained sealing compound was cured under the photocuring conditions shown below to form a cured body, and the water vapor transmission rate of the cured body was evaluated by the method shown below.

[0231] [Surface Tension]

[0232] The static surface tension of the sealant was measured by the pendant drop method in an atmosphere of 23° C. using (DM500 manufactured by Kyowa Interface Science Co., Ltd.). The measurement results are shown in Table 1.

[0233] [wettability]

[0234] On a 70 mm x 70 mm x 0.7 mmt...

Embodiment 2

[0244] Except for using 100 parts by mass of pentafluorobenzyl methacrylate (manufactured by Tokyo Chemical Industry Co., Ltd.) instead of trifluoromethyl methacrylate, it was carried out in the same manner as in Example 1, and a sealant and its cured body were produced and evaluated. . Table 1 shows the evaluation results. In addition, content of a fluorine atom with respect to the total amount of a monomer component was 34 mass %.

Embodiment 3

[0246] A sealant was produced in the same manner as in Example 1 except that 100 parts by mass of 2,2,3,3-tetrafluoropropyl acrylate (manufactured by Osaka Organic Chemical Industry Co., Ltd.) was used instead of trifluoromethyl methacrylate. and its cured body and evaluated. Table 1 shows the evaluation results. In addition, content of a fluorine atom with respect to the total amount of a monomer component was 39 mass %.

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Abstract

This sealing agent for an organic electroluminescence display device contains: a monomer component including a fluorine-containing monomer (A) which has a fluorine atom and a (meth)acryloyl group; anda photopolymerization initiator.

Description

technical field [0001] The present invention relates to a sealant for organic electroluminescent (EL) display elements. Moreover, this invention relates to the hardened|cured body of the sealing agent for organic electroluminescence display elements, the sealing material for organic electroluminescence display elements containing this hardening body, and the organic electroluminescence display apparatus containing this sealing material. Background technique [0002] An organic electroluminescent display element (also referred to as an organic EL display element, an organic EL element, or an OLED element) has attracted attention as an element body capable of emitting high-intensity light. However, the organic EL display element has a problem of being degraded by moisture and lowering the emission characteristics. [0003] In order to solve such problems, techniques for sealing organic EL display elements and preventing deterioration due to moisture are being studied (for exa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B33/04C09K3/10G09F9/30H01L27/32H01L51/50
CPCH05B33/04G09F9/30C09K3/10H10K59/8722H10K59/873C08F220/22C08F220/30C08F222/10C08F2/50
Inventor 佐佐木麻希子山下幸彦栗村启之
Owner DENKA CO LTD