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Method for manufacturing organic electroluminescent display device

An electroluminescence display and display device technology, applied in the direction of electric solid device, semiconductor/solid state device manufacturing, electrical components, etc., can solve the problems of poor performance stability, low luminous brightness, low luminous efficiency, etc. The preparation process is simple and the effect of improving the comprehensive performance

Inactive Publication Date: 2009-08-26
IRICO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the technical problems of low luminous brightness, low luminous efficiency and poor performance stability of organic electroluminescent display devices in the prior art, the present invention provides a method for preparing an organic electroluminescent display device, comprising the following steps:

Method used

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  • Method for manufacturing organic electroluminescent display device

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Embodiment 1

[0018] A method for preparing an organic electroluminescent display device, comprising the steps of:

[0019] 1) Print the indium tin oxide ITO anode 2 pattern of the organic electroluminescence display device OLED on the cleaned conductive substrate 1, and ultrasonically clean the substrate printed with the indium tin oxide ITO anode 2 pattern with toluene, ethanol and acetone respectively, Then rinse with deionized water. Finally, the ozone ion bombardment treatment was carried out in the vacuum chamber, the pressure was controlled at 50 Pa, and the substrate was bombarded for 20 minutes.

[0020] 2) Evaporate the hole transport layer material N,N'-bis(1-naphthyl)-N,N'-diphenyl- 1,1'-diphenyl-4,4'-diamine, referred to as NPB, prepared the first hole transport layer 3 of NPB, and the vacuum degree of the system was 5×10 -5 Pa, NPB deposition rate is 0.1nm / s, thickness is 80nm.

[0021] 3) On the first hole transport layer 3 of NPB, the red, green and blue organic light-emi...

Embodiment 2

[0030] A method for preparing an organic electroluminescent display device, comprising the steps of:

[0031]1) Print the indium tin oxide ITO anode 2 pattern of the organic electroluminescence display device OLED on the cleaned conductive substrate 1, and ultrasonically clean the substrate printed with the indium tin oxide ITO anode 2 pattern with toluene, ethanol and acetone respectively, Rinse with deionized water, perform ultrasonic cleaning in deionized water, then rinse with deionized water, then ultrasonically clean with toluene, ethanol and acetone, then rinse with deionized water, and finally in a vacuum chamber The ozone ion bombardment treatment was carried out in the middle, the pressure was controlled between 5Pa, and the substrate was bombarded for 5min.

[0032] 2) Evaporate the hole transport layer material N,N'-bis(1-naphthyl)-N,N'-diphenyl- 1,1'-diphenyl-4,4'-diamine, referred to as NPB, prepared the first hole transport layer 3 of NPB, and the vacuum degree...

Embodiment 3

[0042] A method for preparing an organic electroluminescent display device, comprising the steps of:

[0043] 1) Print the indium tin oxide ITO anode 2 pattern of the organic electroluminescent display device OLED on the cleaned conductive substrate 1, and perform ultrasonic cleaning on the printed substrate with the indium tin oxide ITO anode 2 pattern in deionized water with detergent , then rinsed with deionized water, and then ultrasonically cleaned with toluene, ethanol and acetone respectively, then soaked with deionized water, and finally carried out ozone ion bombardment treatment in a vacuum chamber, and the pressure was controlled at 30Pa. Bombarded for 15 minutes.

[0044] 2) Evaporate the hole transport layer material N,N'-bis(1-naphthyl)-N,N'-diphenyl- 1,1'-diphenyl-4,4'-diamine, referred to as NPB, prepared the first hole transport layer 3 of NPB, and the vacuum degree of the system was 5×10 -5 Pa, NPB deposition rate is 1.0nm / s, thickness is 60nm.

[0045] 3)...

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Abstract

The invention relates to a method for manufacturing an organic electroluminescent display device, belonging to the technical field of panel display and comprising the steps of: 1) printing an ITO anode graphics on a conductive substrate, ultrasonically cleaning the substrate printed with an anode for the ozone ion bombardment treatment in a vacuum chamber; 2) manufacturing an NPB cavity transport layer on the substrate; 3) manufacturing a luminescent layer on the cavity transport layer; 4) manufacturing Alq3 electronic transport layer on the luminescent layer; 5) manufacturing a CuPc / LiF / Al functional intercalated layer on the electronic transport layer; 6) manufacturing a second cavity transport layer on the functional intercalated layer; 7) manufacturing a second luminescent layer on the second cavity transport layer; 8) manufacturing a second Alq3 electronic transport layer on the second luminescent layer; 9) manufacturing an LiF / Al mixed cathode on the second Alq3 electronic transport layer; and 10) integrally encapsulating the device with an encapsulating substrate to complete the manufacturing of the device. The inventive organic electroluminescent display device OLED has simple manufacturing technologies and can realize high-brightness narrow-band emission.

Description

technical field [0001] The invention belongs to the technical field of flat panel display and relates to a preparation method of an organic electroluminescent display device. Background technique [0002] Organic electroluminescent display devices, referred to as OLEDs, have become the most promising in the field of optoelectronic devices and flat panel displays because of their high luminous efficiency, low driving voltage, simple preparation process, low cost, ultra-thin, and surface emission and full-color display. One of the promising technologies. Generally, an organic electroluminescent display device consists of a substrate, an indium tin oxide ITO anode, and a NPB hole transport layer, and the evaporated red light material is Alq 3 Doped with 3% 4-(dicyanomethylene)-2-methyl-6-(4-dimethylaminostyryl)-4H-pyran; the green light material is Alq 3 Doped with 5% coumarin; the blue light material is composed of a light-emitting layer made of anthracene doped with 4% pery...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/56H01L51/54
Inventor 张志刚
Owner IRICO
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