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OLED device and fabrication method

A technology of device and wet film formation, which is applied in the manufacture of semiconductor/solid-state devices, electric solid-state devices, semiconductor devices, etc., can solve the problems of low luminous efficiency of devices, insufficient electron injection ability, high preparation cost, etc., and achieve device luminescence High efficiency, effective electron injection, good film quality

Active Publication Date: 2018-04-27
WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The inventors of the present application found in the long-term research and development process that the electron injection ability of the above-mentioned technology is not good enough, and the preparation cost is high, and the luminous efficiency of the device is not high

Method used

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  • OLED device and fabrication method
  • OLED device and fabrication method
  • OLED device and fabrication method

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Experimental program
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preparation example Construction

[0031] The present application also provides a method for preparing an OLED device. It should be noted that the method for preparing an OLED device according to this embodiment can be used to prepare the above-mentioned OLED device. Please refer to the above-mentioned OLED device for detailed descriptions, and will not repeat them here. .

[0032] The method includes:

[0033] A. Provide the substrate;

[0034] B. Deposit a layer of anode material on the substrate by magnetron sputtering to form the anode;

[0035] C. Using a multi-source organic molecular vapor deposition system, the material of the hole injection layer, the material of the hole transport layer, the material of the light-emitting layer, and the material of the electron transport layer are sequentially deposited on the anode by vacuum evaporation to form in sequence Hole injection layer, hole transport layer, light emitting layer, electron transport layer;

[0036] D. In an inert gas environment, the multi-...

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Abstract

The invention discloses an OLED device and a fabrication method. The device comprises an electron injection layer, wherein the electron injection layer is a surfactant-buried multi-acid compound. By the method, electron injection in the device is more effective, the light-emitting efficiency of the device is higher, moreover, the fabrication process is relatively simple, and the device is high instability and good in film formation quality.

Description

technical field [0001] The present application relates to the technical field of electroluminescence, in particular to an OLED device and a preparation method. Background technique [0002] Organic electroluminescent devices (OLEDs) have shown great application prospects in the fields of display and lighting because of their simple manufacturing process, wide range of materials, controllable structure, ultra-thin, rollable and many other advantages. OLED display is a flat panel display technology with great development prospects. It has the characteristics of self-illumination, simple structure, ultra-thin, fast response, wide viewing angle, low power consumption and flexible display. It is known as "dream display" . [0003] It is worth noting that although OLEDs have been commercially produced, there is still room for improvement in the luminous efficiency of their devices. In the prior art, the electron injection layer (cathode modification layer) of OLED is mostly made...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/50H01L51/54H01L51/56H10K99/00
CPCH10K85/611H10K50/171H10K71/00H10K71/164H10K50/15H10K2102/101
Inventor 李先杰
Owner WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD