Transparent sealant for organic el element

A sealing material and component technology, which is applied in the direction of organic semiconductor devices, electrical components, thin material processing, etc., can solve the problems of difficult fixing of sealed tanks, insufficient sealing of components, insufficient dark spots, etc., and achieves excellent transparency and inhibition Dark spots, visibility stabilization effect

Inactive Publication Date: 2006-11-15
JSR CORPORATIOON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, neither method is sufficient to suppress the generation of dark spots
In addition, when using a hard transparent sealing material obtained by ultraviolet curing resin, the transparent substrate or the sealing can is not easily fixed at the manufacturing stage of the display device, and the fixing is not strong, and the sealing of the element may become insufficient.

Method used

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  • Transparent sealant for organic el element
  • Transparent sealant for organic el element
  • Transparent sealant for organic el element

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0137] Using the above-mentioned flexible polymer composition (i), a plate-shaped thin-walled body was prepared by coating molding, which was used as a transparent sealing material for organic EL elements, and the transparent sealing material for organic EL elements was evaluated by the following method . The results are shown in Table 2.

[0138] (1) Total light transmittance and haze

[0139] A thin-walled body with a thickness of 0.5 mm is sandwiched between two pieces of melt-molded aluminosilicate thin plate glass (manufactured by Corning Corporation, trade name "Corning 1737") with a thickness of 0.7 mm, and a total light transmittance haze measuring device (BYK -Gardner company make, brand name "Haze-gard plus4725") measured the total light transmittance (%) and haze (%) at 25 degreeC. Transparency was marked as "○" when the haze was less than 5% and the transparency was excellent, and "×" was marked when the haze was 5% or more and the transparency was poor.

[0140...

Embodiment 2～6、8

[0149] Using the flexible polymer compositions (ii) to (vi) and (viii) above, a transparent sealing material for an organic EL element was produced in the same manner as in Example 1. Each transparent sealing material for organic EL elements was evaluated in the same manner as in Example 1. The results are shown in Table 2 together.

Embodiment 7、9

[0151] Using the flexible polymer compositions (vii) and (ix), hot pressing was performed at 200° C. to obtain a transparent sealing material for an organic EL element with a thickness of 500 μm. This transparent sealing material for organic EL elements was evaluated similarly to Example 1. The results are shown in Table 2 together.

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Abstract

The present invention provides a transparent sealant for organic EL element, which is excellent in flexibility and can seal the organic EL element sufficiently, and thus can suppress generation of dark spots thereby capable of enhancing visibility of an image when an organic EL display is produced. The transparent sealant for organic EL element 2 of the present invention is formed with a flexible polymer composition, and is disposed between the light emitting face of a light emitting element 3 and the sealing member 4 in an electroluminescence display panel 1 comprising the light emitting element 3 sequentially including a substrate 31, an anode layer 32, a light emitting layer 33 and a cathode layer 34, and a sealing member 4 disposed on the light emitting side of the light emitting element 3.

Description

technical field [0001] The present invention relates to a transparent sealing material for organic EL elements. More specifically, it relates to a transparent sealing material for organic EL elements for filling voids on the light-emitting surface side of light-emitting elements constituting an electroluminescence display (hereinafter referred to as "EL display"). The transparent sealing material for organic EL elements of the present invention is suitable for use in EL displays for mobile phones, portable information terminals, desktop computers, notebook computers, televisions, in-vehicle information devices, clocks, and other various display devices. technical background [0002] Since the EL element emits light by itself, a display device including the EL element has high visibility. Utilizing this property, a high-performance display device having an organic EL element capable of lowering the applied voltage than an inorganic EL element, ie, an organic EL display, is b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B33/04H01L51/52H05B33/14
CPCY10T428/26Y10T428/31938Y10T428/31855Y10T428/3154Y10T428/31786Y10T428/31725Y10T428/31551Y10T428/31663Y10T428/31935H10K2102/3026H10K2102/311H10K59/871H10K59/873H10K59/872H05B33/04H10K50/844H10K50/841
Inventor 铃木昌则川田隆溝内博行森川明彦
Owner JSR CORPORATIOON
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