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White organic light emitting device and manufacturing method thereof

A technology for electroluminescent devices and blue light emitting layers, which is applied in the fields of electro-solid devices, semiconductor/solid-state device manufacturing, electrical components, etc. The effect of stable luminous color and high luminous efficiency

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 they are bonded together back to back through adhesives. This structure becomes more complicated, and the entire device has more manufacturing processes.
There are also researchers who use transparent anode and cathode in a single OLED structure to obtain the effect of double-sided light emission, but for white OLED light-emitting devices, this double-sided OLED means that multi-color light-emitting layers, such as red , blue, green and other light-emitting materials are properly arranged, and energy transfer between each light-emitting layer is easy to occur, making the light-emitting color unstable and difficult to control the uniformity

Method used

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  • White organic light emitting device and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] A method for preparing an organic electroluminescent device, comprising the following steps:

[0067] (1) Provide a glass substrate with a thickness of 0.1mm, place the substrate in deionized water containing detergent for ultrasonic cleaning, clean it with isopropanol and acetone in ultrasonic treatment for 20 minutes, and then dry it with nitrogen ; The glass substrate includes a first end surface and a second end surface oppositely arranged;

[0068] (2) In a vacuum of 5×10 -4 In the vacuum coating system of Pa, the first anode is magnetron sputtered from the second end to the first end face direction on the glass substrate, and the second anode is magnetron sputtered from the first end to the second end face direction on the glass substrate; and the second anode are made of ITO, with a thickness of 100nm;

[0069] The second hole injection layer is vacuum evaporated on the second anode. After the preparation is completed, the substrate plane is turned 180 degrees, a...

Embodiment 2

[0081] A method for preparing an organic electroluminescent device, comprising the following steps:

[0082] (1) Provide a glass substrate with a thickness of 1 mm, place the substrate in deionized water containing detergent for ultrasonic cleaning, clean it with isopropanol and acetone in ultrasonic treatment for 20 minutes, and then dry it with nitrogen; The glass substrate includes a first end surface and a second end surface oppositely arranged;

[0083] (2) In a vacuum of 1×10 -5 In the vacuum coating system of Pa, the first anode is magnetron sputtered on the glass substrate from the second end to the first end face direction, and the second anode is magnetron sputtered on the glass substrate from the first end to the second end face direction, and the first anode is The materials of the second anode and the second anode are both ZAO, and the thickness is 70nm;

[0084] On the first anode, the first hole injection layer, the first hole transport layer, the red light em...

Embodiment 3

[0094] A method for preparing an organic electroluminescent device, comprising the following steps:

[0095] (1) Provide a glass substrate with a thickness of 0.5mm, place the substrate in deionized water containing detergent for ultrasonic cleaning, clean it with isopropanol and acetone in ultrasonic treatment for 20 minutes, and then dry it with nitrogen ; The glass substrate includes a first end surface and a second end surface oppositely arranged;

[0096] (2) In a vacuum of 1×10 -3In the vacuum coating system of Pa, the first anode is magnetron sputtered on the glass substrate from the second end to the first end face direction, and the second anode is magnetron sputtered on the glass substrate from the first end to the second end face direction, and the first anode is The materials of the second anode and the second anode are both GZO, and the thickness is 200nm; on the first anode, the first hole injection layer, the first hole transport layer, the red light emitting l...

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Abstract

The invention discloses a white organic light emitting device and a manufacturing method thereof. The organic light emitting device comprises a glass substrate; the glass substrate comprises a first end surface and a second end surface oppositely arranged; a first anode, a first hole injection layer, a first hole transmission layer, a red light emitting layer, a first electron transmission layer, a first electron injection layer, a first cathode and a first packaging cover plate are sequentially stacked on the glass substrate in the direction from the second end surface to the first end surface; and a second anode, a second hole injection layer, a second hole transmission layer, a blue light emitting layer, a second electron transmission layer, a second electron injection layer, a second cathode and a second packaging cover plate are sequentially stacked on the glass substrate in the direction from the first end surface to the second end surface. The light emitting efficiency of the organic light emitting device is high.

Description

technical field [0001] The invention relates to the field of organic electroluminescence, in particular to a white light organic electroluminescence 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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L25/10H01L51/50H01L51/56
Inventor 周明杰冯小明陈吉星王平
Owner OCEANS KING LIGHTING SCI&TECH CO LTD