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Organic electroluminescent device, display device and method for preparing organic electroluminescent device

A technology for electroluminescent devices and organic light-emitting layers, which is applied in the fields of electro-solid devices, semiconductor/solid-state device manufacturing, electrical components, etc., can solve problems such as large voltage difference, influence display effect, large resistance, etc., to prevent mutual crosstalk , The effect of improving the light output efficiency and reducing the voltage difference

Active Publication Date: 2017-01-25
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In an organic electroluminescent device, the organic light-emitting layer responsible for emitting light is separated by a plurality of pixel partition walls to form a plurality of pixel units. The pixel unit includes an anode, a cathode, and an organic light-emitting layer between the anode and the cathode. The thickness of the cathode is relatively small. Thin, large resistance, uneven voltage distribution on the cathode, and a relatively large voltage drop (IR drop), which seriously affects the product quality of organic electroluminescent devices. At the same time, the light emitted by each pixel unit crosstalks with each other. Seriously affect the display effect

Method used

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  • Organic electroluminescent device, display device and method for preparing organic electroluminescent device
  • Organic electroluminescent device, display device and method for preparing organic electroluminescent device

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Embodiment 1

[0048] combine image 3 As shown, embodiment one of the method for preparing an organic electroluminescent device of the present invention includes:

[0049] Prepare the anode layer 2 and the pixel separation wall 51;

[0050] Prepare the auxiliary electrode 6, the passivation layer 36 and the organic light-emitting layer 5 sequentially on the pixel separation wall 51;

[0051] preparing a cathode layer 4 on said passivation layer 36;

[0052] The cathode layer 4 is connected with the auxiliary electrode 6, and the auxiliary electrode 6 is made of metal material.

[0053] An embodiment of the method for preparing an organic electroluminescent device of the present invention, wherein said connecting the cathode layer 4 to the auxiliary electrode 6 includes:

[0054] Through the laser welding process, the cathode layer 4 is irradiated with laser light to form a via hole 37 in the passivation layer, and the cathode layer 4 is connected to the auxiliary electrode 6 through the ...

Embodiment 2

[0055] Embodiment 2 of the method for preparing an organic electroluminescent device of the present invention includes:

[0056] Prepare the anode layer 2 and the pixel separation wall 51;

[0057] Prepare the auxiliary electrode 6 and the passivation layer 36 on the pixel separation wall 51, obtain the via hole 37 through the laser drilling process on the passivation layer 36, and then form the organic light-emitting layer 5, the cathode layer 4, pass the via hole 37, and the cathode The layer 4 is connected with the auxiliary electrode 6, and the auxiliary electrode 6 is made of metal material.

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Abstract

The organic electroluminescence device, the display device and the preparation method of the organic electroluminescence device of the present invention, wherein the organic electroluminescence device includes an anode layer, a cathode layer and an organic light-emitting layer, and also includes an auxiliary electrode, and the auxiliary electrode is connected to the cathode layer , to reduce the voltage drop across the cathode layer. The display device of the present invention includes the organic electroluminescent device of the present invention. The method for preparing an organic electroluminescence device of the present invention comprises: preparing an anode layer and a pixel partition wall; preparing an auxiliary electrode and a passivation layer, and opening a via hole on the passivation layer; preparing a cathode layer on the passivation layer; passing through the via hole The cathode layer is connected to the auxiliary electrode, and the auxiliary electrode is made of metal material. The auxiliary electrode of the technical solution of the present invention is made of reflective and conductive metal material, which can prevent the crosstalk between the lights emitted by each pixel, improve the light extraction efficiency, and reduce the voltage difference of the cathode.

Description

technical field [0001] The invention relates to the field of electroluminescence, in particular to an organic electroluminescence device, a display device and a method for preparing the organic electroluminescence device. Background technique [0002] Organic electroluminescent display (OLED) devices have the advantages of low energy consumption, high brightness, fast response time, wide viewing angle, light weight, etc., and have been widely used in mobile communication terminals, personal digital assistants (PDAs), and handheld computers recently. Compared with LCDs, the process of manufacturing OLED devices is relatively simple, which can reduce production costs. The core component of an organic electroluminescent display device is an organic electroluminescent device. [0003] In an organic electroluminescent device, the organic light-emitting layer responsible for emitting light is separated by a plurality of pixel partition walls to form a plurality of pixel units. Th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/52H01L51/56H01L27/32
CPCH10K59/12H10K50/824H10K50/856H10K71/00
Inventor 程鸿飞张玉欣
Owner BOE TECH GRP CO LTD
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