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Organic light emiting device and method of manufacturing the same

An organic light-emitting device and organic technology, applied in lighting devices, electroluminescent light sources, organic semiconductor devices, etc., can solve the problem of opaque desiccant, large volume of light-emitting display devices, and inability of light-emitting display devices to be used as front-emission light-emitting devices, etc. problem, to achieve high transmittance, long life effect

Inactive Publication Date: 2007-07-04
SAMSUNG DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the organic electroluminescent display device is bulky due to the shape of the airtight container
In addition, the desiccant becomes opaque even when it absorbs water vapor and retains its solid state
Therefore, the organic electroluminescence display device cannot be used as a front emission type light emitting device

Method used

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  • Organic light emiting device and method of manufacturing the same
  • Organic light emiting device and method of manufacturing the same
  • Organic light emiting device and method of manufacturing the same

Examples

Experimental program
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Effect test

example 1

[0075] First, epoxy acrylate (EXS74-16, manufactured by TOAGOSEI Co., Ltd.) was prepared as an organic transparent sealant, and the WVTR of the sealant was measured. Specifically, epoxy acrylate was coated on a glass substrate, and ultraviolet (UV) light was used to cure the epoxy acrylate to form an epoxy acrylate film with a thickness of 100 μm. The film was separated from the glass substrate. Separated membranes were placed in a nitrogen atmosphere chamber. One surface of the membrane is covered with water vapor. Under the condition that the temperature is 38°C and the relative humidity is 100%, MOCON equipment (produced by MOCON Company) is used to measure the water vapor transmission rate (WVTR) of epoxy acrylate, WVTR is water vapor from one side of the film to Transparency on the other side. As a result, the WVTR of epoxy acrylate is about 9.7g / m 2 ·sky.

[0076] Next, 100 parts by weight of anhydrous calcium oxide (CaO) (with an average particle size of 30 μm) and...

example 2

[0081] In addition to using a composition containing epoxy silicate (ORMOCER, produced by Fraunhofer Co.) to form a transparent sealant layer containing a water vapor absorbing material as an organic / inorganic composite transparent sealant instead of epoxy acrylate as a transparent sealant In addition, an organic light-emitting device was prepared in the same manner as in Example 1. The WVTR of the epoxy silicate was measured in the same manner as in Example 1. As a result, the WVTR of epoxy silicate is about 3 g / m 2 ·Day to 4g / m 2 ·sky.

example 3

[0083] Except for SiO with a thickness of 0.1 μm 2 A protective layer is used to cover the organic light-emitting unit on the substrate including the first electrode, the organic layer and the second electrode, and an organic light-emitting device is prepared in the same manner as in Example 1.

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Abstract

Disclosed is an organic light emitting device which includes a substrate; an encapsulation substrate, an organic light emitting unit interposed between the substrate and the encapsulation substrate. A water vapor absorption material-containing transparent sealant layer covers the organic light emitting unit. The sealant layer includes a transparent sealant having a water vapor transmission rate (WVTR) of about 20 g / m 2 day or less and a water vapor absorption material having an average particle size of about 100 nm or less.

Description

[0001] This application claims the benefit of Korean Patent Application No. 10-2005-0135858 filed in the Korean Intellectual Property Office on December 30, 2005, the disclosure of which is hereby incorporated by reference in its entirety. technical field [0002] The present invention relates to an organic light emitting device, and more particularly, the present invention relates to encapsulating an organic light emitting device. Background technique [0003] When water vapor and / or oxygen permeate into the organic light emitting device, the organic light emitting device deteriorates. Therefore, an organic light emitting device needs to be encapsulated for stable operation and long lifespan. For example, generally, metal cans or glass with grooves are prepared in a lid-like shape. Next, a water vapor absorbing material for absorbing water vapor is placed in the groove in powder form. Alternatively, the water vapor absorbing materi...

Claims

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Application Information

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IPC IPC(8): H01L51/50H01L51/52H01L51/56H01L27/32H01L23/29H01L23/26H01L21/56H05B33/12H05B33/04H05B33/10C09K3/10
CPCH01L51/5237H10K50/846H10K50/8445H10K50/8426H10K50/844H10K2102/331H05B33/04H05B33/10
Inventor 赵尹衡李钟赫金元钟吴敏镐李炳德崔镇白
Owner SAMSUNG DISPLAY CO LTD
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