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Organic electroluminescent device and preparation method thereof

An electroluminescent device and electroluminescent technology, which are applied in the fields of electro-solid devices, semiconductor/solid-state device manufacturing, electrical components, etc., can solve the problems of many processes, heavier weight of OLED devices, complex structure, etc., and improve the adjustability. , Improve production efficiency, reduce the effect of thickness

Inactive Publication Date: 2014-12-03
OCEANS KING LIGHTING SCI&TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The OLED device with double-sided light-emitting display invented by some researchers uses two OLED light-emitting units at the same time and sticks them together back to back through adhesives. The weight of the device becomes heavier
In addition, for the OLED light-emitting device that realizes white light emission, this double-sided OLED means that multi-color light-emitting layers, such as red, blue, green and other light-emitting materials, need to be properly arranged at the same time, and it is easy to exist between each light-emitting layer. Energy transfer makes the luminescent color unstable and it is difficult to control the uniformity

Method used

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  • Organic electroluminescent device and preparation method thereof
  • Organic electroluminescent device and preparation method thereof
  • Organic electroluminescent device and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] A method for preparing an organic electroluminescent device, comprising the following steps:

[0078] (1) Provide the first glass substrate and the second glass substrate with a thickness of 0.2mm, place them in deionized water containing detergent for ultrasonic cleaning, then use isopropanol and acetone in ultrasonic treatment for 20 minutes, and then use Blow dry with nitrogen;

[0079] (2) Put the cleaned first glass substrate in a vacuum of 1×10 -5 In the vacuum coating system of Pa, the first light-emitting unit is prepared to obtain the first light-emitting unit group: firstly, the first anode is prepared on the first glass substrate by magnetron sputtering, the material is ITO, and the thickness is 100nm, and then the ITO The surface is sequentially evaporated to prepare the first hole injection layer, the first hole transport layer, the green light emitting layer, the first electron transport layer, the first electron injection layer and the first cathode;

...

Embodiment 2

[0093] A method for preparing an organic electroluminescent device, comprising the following steps:

[0094] (1) Provide the first glass substrate and the second glass substrate with a thickness of 2mm, place them in deionized water containing detergent for ultrasonic cleaning, then use isopropanol and acetone in ultrasonic treatment for 20 minutes, and then use nitrogen gas blow dry;

[0095] (2) Put the cleaned first glass substrate in a vacuum of 1×10 -5 In the vacuum coating system of Pa, the first light-emitting unit is prepared to obtain the first light-emitting unit group: firstly, the first anode is prepared on the first glass substrate by magnetron sputtering, the material is ITO, and the thickness is 100nm, and then the ITO The surface is sequentially evaporated to prepare the first hole injection layer, the first hole transport layer, the green light emitting layer, the first electron transport layer, the first electron injection layer and the first cathode;

[00...

Embodiment 3

[0109] A method for preparing an organic electroluminescent device, comprising the following steps:

[0110] (1) Provide the first glass substrate and the second glass substrate with a thickness of 1mm, place them in deionized water containing detergent for ultrasonic cleaning, then use isopropanol and acetone in ultrasonic treatment for 20 minutes, and then use nitrogen gas blow dry;

[0111] (2) Put the cleaned first glass substrate in a vacuum of 1×10 -5 In the vacuum coating system of Pa, the first light-emitting unit is prepared to obtain the first light-emitting unit group: firstly, the first anode is prepared on the first glass substrate by magnetron sputtering, the material is ITO, and the thickness is 100nm, and then the ITO The surface is sequentially evaporated to prepare the first hole injection layer, the first hole transport layer, the green light emitting layer, the first electron transport layer, the first electron injection layer and the first cathode;

[01...

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Abstract

The invention provides an organic electroluminescent device which comprises the components of: a first light emitting unit set, a second light emitting unit set, and a transparent separating layer which is arranged therebetween. The first light emitting unit set comprises a first substrate and a first light emitting unit arranged on the first substrate. A first closed space is formed by the first substrate and the transparent separating layer through adhesive. The first light emitting unit is accommodated in the first closed space. The second light emitting unit set comprises a second substrate, a second light emitting unit and a third light emitting unit; wherein second light emitting unit and the third light emitting unit which are separated by a separating column. The second light emitting unit and the third light emitting unit are accommodated in a second closed space which is formed by the second substrate and the transparent separating layer through the adhesive. The organic electroluminescent device comprises two organic electroluminescent light emitting unit sets and is composed of three light emitting units which respectively emit green light, blue light and red light. Finally stable white light emission can be obtained. The invention further provides a preparation method for the organic electroluminescent 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] Organic Light Emission Diode (hereinafter referred to as OLED) has the characteristics of high brightness, wide range of material selection, low driving voltage, fully cured active luminescence, etc., and has the advantages of high definition, wide viewing angle, and fast response speed. It is a display technology and light source with great potential, which conforms to the development trend of mobile communication and information display in the information age, as well as the requirements of green lighting technology, and is the focus of many researchers at home and abroad. [0003] Most of the OLEDs in the prior art can only extract light from one side of the anode or the cathode to obtain bottom-emitting or top-emitting OLED devices. The OLED device with double-sided lig...

Claims

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Application Information

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IPC IPC(8): H01L51/50H01L51/52H01L51/54H01L51/56
CPCH10K85/342H10K50/00H10K50/8428H10K50/841H10K50/11H10K71/00
Inventor 周明杰冯小明陈吉星王平
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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