Sealing composition

A technology for composition and sealing, which is applied in the direction of electrical components, circuits, electroluminescent light sources, etc., and can solve problems such as degradation of organic EL components

Inactive Publication Date: 2018-07-31
DAICEL CHEM IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, crown ethers and polyethers have the problem of decomposing in the presence of cations to generate outgassing, and deteriorating organic EL elements due to the outgassing

Method used

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  • Sealing composition
  • Sealing composition
  • Sealing composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0249] According to the formulation described in the table, each component was put into an autorotation-revolution mixer (trade name "Awa-tori Rentaro (あわとり入太郎) ARE-310", manufactured by Thinky Co., Ltd.) and stirred to obtain a composition for sealing (1).

[0250] The obtained sealing composition (1) was coated on a glass substrate to form a coating film (1) (thickness: 100 μm), and ultraviolet rays were irradiated with a mercury lamp (irradiation amount: 1600 mJ / cm 2 ). The viscosity was measured before ultraviolet irradiation, immediately after ultraviolet irradiation, and 30 minutes after ultraviolet irradiation, and the degree of viscosity increase from immediately after ultraviolet irradiation to 30 minutes after ultraviolet irradiation was calculated from the following formula.

[0251] Viscosity increase = Viscosity at 30 minutes after UV irradiation / Viscosity immediately after UV irradiation

[0252] Then, the coating film (1) after ultraviolet-ray irradiation wa...

Embodiment 2～9、 comparative example 1～5

[0255] Except having changed the formulation as described in a table|surface, it carried out similarly to Example 1, and obtained the composition for sealing, obtained the coating film, and obtained the hardened|cured material. In addition, in Example 6, the temperature of post-curing was changed to 150 degreeC.

[0256] With respect to the obtained cured product, the gas discharge rate and water vapor permeability were evaluated by the following methods.

[0257]

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Abstract

Provided is an organic EL element sealing composition with which it is possible to efficiently seal an organic EL element using a low-outgassing, moisture-proof cured product without directly exposingthe organic EL element to UV rays. An organic EL element sealing composition of the present invention contains a component (A), a component (B), and a component (C). Component (A): a cation-curable compound having, in one molecule, at least two groups of at least one type selected from alicyclic epoxy groups, oxetane ring-containing groups, episulfide groups, and vinyl ether groups. Component (B): a photo-cationic polymerization initiator. Component (C): a glycoluril compound.

Description

technical field [0001] The present invention relates to a sealing composition capable of sealing an organic EL element without damaging it and protecting the organic EL element from deterioration due to moisture. This application claims priority based on Japanese Patent Application No. 2015-233349 for which it applied in Japan on November 30, 2015, and uses the content here. Background technique [0002] An organic electroluminescent (hereinafter also referred to as "organic EL") element has a structure in which a light-emitting layer is sandwiched between a pair of opposing electrodes, and electrons are injected from one electrode and holes are injected from the other electrode. The injected electrons and holes emit light when recombined in the light emitting layer. An organic EL device including the above-mentioned organic EL element is expected as a full-color flat panel display or a device replacing an LED because of its high impact resistance, visibility, and diversity...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B33/04C08G65/18C08L63/00H01L51/50H05B33/10
CPCC08G65/18C08L63/00H05B33/04H05B33/10H10K50/00C08K5/21C08K5/3445C08K5/1515C08K7/02H10K50/8426
Inventor 江川智哉
Owner DAICEL CHEM IND LTD
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