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Active drive organic electroluminescent device and preparation method thereof

An electroluminescent device, source-driven technology, applied in the direction of electro-solid devices, electrical components, semiconductor devices, etc., can solve the problem of poor adhesion between the driving circuit and the organic electroluminescent device, and achieve the reduction of production cost and process difficulty, and excellent performance. The effect of realizing the effect, improving the performance

Inactive Publication Date: 2010-11-17
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is how to provide an actively driven organic electroluminescent device and its preparation method, which solves the problem of poor adhesion between the prepared driving circuit and the organic electroluminescent device due to the low surface energy of the thin film transistor , while improving the barrier performance of organic electroluminescent devices to water and oxygen; the preparation method is simple and effective, can greatly reduce the production cost and process difficulty of the device, and greatly improve the yield rate of related devices

Method used

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  • Active drive organic electroluminescent device and preparation method thereof
  • Active drive organic electroluminescent device and preparation method thereof
  • Active drive organic electroluminescent device and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0056] Such as figure 1 In the device structure shown, the organic electroluminescent device 3 is a blue-light organic electroluminescent device, the transition layer 2 is a single-layer adhesive that needs to be cured by ultraviolet light, and the thin film transistor 1 is an active driving circuit. Physical photos such as figure 2 shown.

[0057] The preparation method is as follows:

[0058] ①Use detergent, acetone solution, ethanol solution and deionized water to ultrasonically clean the organic electroluminescent device, and dry it with dry nitrogen after cleaning;

[0059] ②Preparation of thin film transistors on the treated substrate;

[0060] ③ Stir the adhesive raw material diluted 1:10 with ethanol for 20 hours, then spin-coat it on the surface of the thin film transistor at a speed of 2000 rpm for one minute, and the film thickness is about 100 nanometers;

[0061] Epoxy resin or modified epoxy resin 96%

[0062] Thinner 3%

[0063] Cationic photoinitiator 1%...

Embodiment 2

[0073] Such as figure 1 In the device structure shown, the organic electroluminescent device 3 is a green organic electroluminescent device, the transition layer 2 is a single-layer adhesive that needs to be cured by ultraviolet light, and the thin film transistor 1 is an active driving circuit.

[0074] The preparation method is as follows:

[0075] ①Use detergent, acetone solution, ethanol solution and deionized water to ultrasonically clean the organic electroluminescent device, and dry it with dry nitrogen after cleaning;

[0076] ②Preparation of thin film transistors on the treated substrate;

[0077] ③ Stir the adhesive raw material diluted 1:10 with ethanol for 20 hours, then spin-coat it on the surface of the thin film transistor at a speed of 2000 rpm for one minute, and the film thickness is about 100 nanometers;

[0078] Epoxy resin or modified epoxy resin 95%

[0079] Thinner 2%

[0080] Cationic photoinitiator 3%;

[0081] ④UV curing treatment on the surface ...

Embodiment 3

[0087] Such as figure 1 In the device structure shown, the organic electroluminescent device 3 is a red light organic electroluminescent device, the transition layer 2 is a single-layer adhesive that needs to be cured by ultraviolet light, and the thin film transistor 1 is an active driving circuit.

[0088] The preparation method is as follows:

[0089] ①Use detergent, acetone solution, ethanol solution and deionized water to ultrasonically clean the organic electroluminescent device, and dry it with dry nitrogen after cleaning;

[0090] ②Preparation of thin film transistors on the treated substrate;

[0091] ③ Stir the adhesive raw material diluted 1:10 with ethanol for 20 hours, then spin-coat it on the surface of the thin film transistor at a speed of 2000 rpm for one minute, and the film thickness is about 100 nanometers;

[0092] ④UV curing treatment on the surface of the transition layer for 30 seconds;

[0093] ⑤ Perform photolithography on the transition layer and ...

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Abstract

The invention discloses an active drive organic electroluminescent device, which comprises a thin film transistor and an organic electroluminescent device, and is characterized in that: a transition layer is arranged between the thin film transistor and the organic electroluminescent device, and is made of a cationic UV-cured adhesive which needs to be cured by UV; and the cationic UV-cured adhesive comprises the following components: epoxy resin or modified epoxy resin, a diluent and a cationic photo-initiator. The transition layer solves the problem of poor adhesiveness between the thin film transistor and the organic electroluminescent device, and improves the obstruction of a substrate to water and oxygen. The preparation method is simple and effective, can greatly reduce the production cost and process difficulty of the device, and improves the finished product rate of the device.

Description

technical field [0001] The invention relates to the technical field of organic optoelectronic devices, in particular to an active-driven organic electroluminescent device and a preparation method thereof. Background technique [0002] Optoelectronics technology is an emerging industry with high technological content that develops rapidly after microelectronics technology. With the rapid development of optoelectronics technology, related devices such as solar cells, optical image sensors, plasma flat-panel displays, electroluminescent displays, Thin film transistors and liquid crystal display panels have gradually developed and matured, and they have greatly improved human living standards and quality of life. At the same time, the wide application of optoelectronic information technology in various fields of social life has also created a huge growing market. At present, the developed countries in the West regard the optoelectronic information industry as one of the key dev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L27/32
CPCH01L51/5237H01L27/3258H10K59/124H10K50/84
Inventor 蒋亚东于军胜李璐钟建
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA