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A method for encapsulating an optoelectronic device

An optoelectronic device and packaging method technology, applied in the field of optoelectronics, can solve the problems of black spot formation, device performance degradation, stability degradation, etc., and achieve the effects of prolonging device life, improving device stability, and simplifying process

Inactive Publication Date: 2011-12-28
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Oxygen oxidizes organic materials to generate carbonyl compounds, which are serious quenchers. In addition, black spots will be formed when materials deteriorate, accompanied by device performance degradation
The influence of water vapor is more obvious, and its main damage method is the hydrolysis of the organic layer compound by the conductive electrode, which greatly reduces the stability

Method used

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  • A method for encapsulating an optoelectronic device
  • A method for encapsulating an optoelectronic device
  • A method for encapsulating an optoelectronic device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] like figure 1 As shown, 1 is an organic electroluminescent device, the anode layer 12 is ITO, and the hole transport layer 13 is N, N'-bis(naphthylidene-1-yl)-N,N'-bis(phenyl) - benzidine (NPB), electron transport layer 14 is 1,3,5-(tri-N-phenyl-2-benzimidazole-2) benzene 41 (TPBi), cathode layer 15 is Mg:Ag alloy, inorganic thin film Packaging material layer 21 is Al 2 o 3 , UV-curable resin 22 includes 55% epoxidized octadecyl-conjugated triene-9,11,13-acid triglyceride, 4% glycerol, 0.98% lead oxide, 5% toluene di Isocyanate, 8% trimethylol propane, 0.01% hydroquinone, 12% tetrahydrofuran, 6% 2-hydroxyethyl methacrylate, 0.01% dibutyltin dilaurate, 1% 2, 2-dimethoxy-phenyl ketone and 8% trimethylol propane triacrylate, the number of cycles n is 20, the device structure is:

[0029] Glass substrate / ITO / NPB(50nm) / TPBi(30nm) / Mg:Ag(200nm) / [Al 2 o 3 (200nm) / UV curable resin (100nm)] 20

[0030] The preparation method is as follows:

[0031] ①Use detergent, aceton...

Embodiment 2

[0039] like figure 1 As shown, 1 is an organic electroluminescent device, the anode layer 12 is ITO, and the hole transport layer 13 is N, N'-bis(naphthylidene-1-yl)-N,N'-bis(phenyl) - benzidine (NPB), electron transport layer 14 is 1,3,5-(tri-N-phenyl-2-benzimidazole-2) benzene 41 (TPBi), cathode layer 15 is Mg:Ag alloy, inorganic thin film Packaging material layer 21 is Al 2 o 3, UV-curable resin 22 includes 55% epoxidized octadecyl-conjugated triene-9,11,13-acid triglyceride, 4% glycerol, 0.01% lead oxide, 5% toluene di Isocyanate, 8% trimethylol propane, 0.989% hydroquinone, 12% tetrahydrofuran, 6% 2-hydroxyethyl methacrylate, 0.01% dibutyltin dilaurate, 1% 2, 2-dimethoxy-phenyl ketone and 8% trimethylol propane triacrylate, the number of cycles n is 16, the device structure is:

[0040] Glass substrate / ITO / NPB(50nm) / TPBi(30nm) / Mg:Ag(200nm) / [Al 2 o 3 (200nm) / UV curable resin (100nm)] 16

[0041] The preparation method is similar to Example 1.

Embodiment 3

[0043] like figure 1 As shown, 1 is an organic electroluminescent device, the anode layer 12 is ITO, and the hole transport layer 13 is N, N'-bis(naphthylidene-1-yl)-N,N'-bis(phenyl) - benzidine (NPB), electron transport layer 14 is 1,3,5-(tri-N-phenyl-2-benzimidazole-2) benzene 41 (TPBi), cathode layer 15 is Mg:Ag alloy, inorganic thin film Packaging material layer 21 is Al 2 o 3 , UV-curable resin 22 includes 30% epoxidized octadecaconjugated triene-9,11,13-acid triglyceride, 5% glycerol, 1% lead oxide, 7% toluene di Isocyanate, 10% trimethylol propane, 1% hydroquinone, 15% tetrahydrofuran, 10% 2-hydroxyethyl methacrylate, 1% dibutyltin dilaurate, 8% 2, 2-dimethoxy-phenyl ketone and 12% trimethylol propane triacrylate, the number of cycles n is 12, the device structure is:

[0044] Glass substrate / ITO / NPB(50nm) / TPBi(30nm) / Mg:Ag(200nm) / [Al 2 o 3 (200nm) / UV curable resin (100nm)] 12

[0045] The preparation method is similar to Example 1.

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Abstract

The invention discloses a method for encapsulating an optoelectronic device. The prepared device is encapsulated by a thin film encapsulation method. The optoelectronic device is covered by a thin film encapsulation layer, and the thin film encapsulation layer consists of thin layers of inorganic thin film encapsulation material and thin layers of ultraviolet curable resin alternately. Overlapping composition, the UV curable resin includes the following components: epoxidized octadecyl-conjugated triene-9,11,13-acid triglyceride, glycerol, lead oxide, toluene diisocyanate, trimethylol Propane, hydroquinone, tetrahydrofuran, 2-hydroxyethyl methacrylate, dibutyltin dilaurate, 2,2-dimethoxy-phenylmethanone, and trimethylolpropane triacrylate. The encapsulation method can effectively block oxygen and water in the surrounding environment, which is beneficial to improving the stability of the device and prolonging the service life of the device; at the same time, the encapsulation method has the characteristics of simple preparation process and low cost.

Description

technical field [0001] The invention relates to the field of optoelectronic technology, in particular to a packaging method for an optoelectronic device. Background technique [0002] Optoelectronics technology is a rapidly developing industry with high technological content after microelectronics technology. With the rapid development of optoelectronic technology, optoelectronic products such as light-emitting diodes, organic light-emitting diodes, solar cells, and thin-film transistors have gradually matured, and they have greatly improved people's lives. At the same time, the wide application of optoelectronic information technology in various fields of social life has also created a huge growing market, and the competition in the field of optoelectronic information is unfolding worldwide. [0003] Current optoelectronic devices, including organic electroluminescent devices, inorganic light emitting diodes, organic solar cells, inorganic solar cells, organic thin film tr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L23/29H01L51/00C08G18/67H10K99/00
Inventor 于军胜陈珉钟建蒋亚东
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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