Organic electroluminescence device and method for manufacturing same

An electroluminescence device and electroluminescence technology, which are applied in the fields of electric solid state devices, chemical instruments and methods, semiconductor/solid state device manufacturing, etc., to achieve the effect of improving lifespan, being suitable for industrialized large-scale use, and reducing erosion

Inactive Publication Date: 2013-12-04
OCEANS KING LIGHTING SCI&TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method of the invention is especially suitable for encapsulating flexible organic electroluminescent devices

Method used

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  • Organic electroluminescence device and method for manufacturing same
  • Organic electroluminescence device and method for manufacturing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A method for preparing an organic electroluminescent device, comprising the following steps:

[0039] (1) Preparation of functional layer, light-emitting layer and metal cathode on the anode substrate

[0040] a. Pretreatment of conductive glass substrate

[0041] Take the ITO glass substrate, wash with detergent, ethanol, pure water, and acetone in sequence, all with an ultrasonic cleaner. Each wash is performed for 5 minutes and stopped for 5 minutes. Repeat the method 3 times, and then Then dry it in an oven for use, and then perform surface activation treatment on the cleaned ITO glass substrate to increase the oxygen content of the surface layer of the ITO glass substrate and improve the work function of the surface of the ITO glass substrate; the thickness of ITO is 100nm;

[0042] b. Preparation of functional layer, light-emitting layer and metal cathode

[0043] The vacuum evaporation method is used to sequentially form a hole injection layer, a hole transport...

Embodiment 2

[0059] A method for preparing an organic electroluminescent device, comprising the following steps:

[0060] (1) Preparation of functional layer, light-emitting layer and metal cathode on the anode substrate

[0061] a. Pretreatment of conductive glass substrate

[0062] Take the ITO glass substrate, wash with detergent, ethanol, pure water, and acetone in sequence, all with an ultrasonic cleaner. Each wash is performed for 5 minutes and stopped for 5 minutes. Repeat the method 3 times, and then Then dry it in an oven for use, and then perform surface activation treatment on the cleaned ITO glass substrate to increase the oxygen content of the surface layer of the ITO glass substrate and improve the work function of the surface of the ITO glass substrate; the thickness of ITO is 100nm;

[0063] b. Preparation of functional layer, light-emitting layer and metal cathode

[0064] The vacuum evaporation method is used to sequentially form a hole injection layer, a hole transport...

Embodiment 3

[0079] A method for preparing an organic electroluminescent device, comprising the following steps:

[0080] (1) Preparation of functional layer, light-emitting layer and metal cathode on the anode substrate

[0081] a. Pretreatment of conductive glass substrate

[0082] Take the ITO glass substrate, wash with detergent, ethanol, pure water, and acetone in sequence, all with an ultrasonic cleaner. Each wash is performed for 5 minutes and stopped for 5 minutes. Repeat the method 3 times, and then Then dry it in an oven for use, and then perform surface activation treatment on the cleaned ITO glass substrate to increase the oxygen content of the surface layer of the ITO glass substrate and improve the work function of the surface of the ITO glass substrate; the thickness of ITO is 100nm;

[0083] b. Preparation of functional layer, light-emitting layer and metal cathode

[0084] The vacuum evaporation method is used to sequentially form a hole injection layer, a hole transport...

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Abstract

The invention provides an organic electroluminescence device which comprises an anode substrate, a functional layer, a luminescent layer, a metallic cathode and a packaging layer. The anode substrate and the packaging layer form a closed space, and the functional layer, the luminescent layer and the metallic cathode are contained in the closed space. The packaging layer sequentially comprises a protective film layer, an inorganic material film layer and a polyethylene glycol terephthalate film layer, wherein the inorganic material film layer is formed by a plurality of film layers which are made of identical material and arranged in an alternating mode, and the polyethylene glycol terephthalate film layer is loaded with metallic aluminum or metallic silver. The material of the inorganic material film layer is SiO2, or Al2O3, or TiO2, or ZrO2, or MgO, or HfO2, or SiN or Si3N4. The invention further provides a method for manufacturing the organic electroluminescence device. According to the method, the situation that water vapor corrodes the organic electroluminescence device can be effectively reduced, the service life of the organic electroluminescence device is obviously prolonged, and organic functional material and the metallic cathode can be protected from damage. The method is especially suitable for packaging a flexible organic electroluminescence device.

Description

technical field [0001] The invention relates to an organic electroluminescent device, in particular to an organic electroluminescent device and a preparation method thereof. Background technique [0002] An organic electroluminescent device (OLED) is a current-mode semiconductor light-emitting device based on organic materials. Its typical structure is that a multi-layer organic material film (hole injection layer, hole transport layer, light emitting layer, electron transport layer and electron injection layer) is sandwiched between the transparent anode and the metal cathode. When a certain voltage is applied between the electrodes , the luminescent layer will emit light. In recent years, due to its low production cost, short response time, high luminance, wide viewing angle, low driving voltage, energy saving and environmental protection, organic electroluminescent devices have received extensive attention in the fields of full-color display, backlight and lighting. And...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/52H01L51/54B32B27/36
Inventor 周明杰王平钟铁涛陈吉星
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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