Organic electroluminescent diode, display substrate, methods for manufacturing same, and display device

A manufacturing method and display substrate technology, applied in the direction of organic semiconductor devices, circuits, electrical components, etc., can solve the problems of unfavorable display panel display effect, easy to cause microcavity effect, and unfavorable device performance, so as to improve the uniformity of light emission and prevent The effect of uneven light emission and elimination of viewing angle problems

Pending Publication Date: 2017-12-22
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Top-emitting OLED devices generally use a reflective metal bottom electrode and a transparent or translucent top electrode. The transparent top electrode is generally a conductive metal oxide, but its high-energy manufacturing process will cause damage to the organic layer, which is not conducive to maintaining device performance.
The translucent top electrode generally adopts a thin metal layer, which has a certain light reflectivity, which is easy to cause the microcavity effect and cause viewing angle problems, which is not conducive to maintaining the display effect of the display panel

Method used

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  • Organic electroluminescent diode, display substrate, methods for manufacturing same, and display device
  • Organic electroluminescent diode, display substrate, methods for manufacturing same, and display device
  • Organic electroluminescent diode, display substrate, methods for manufacturing same, and display device

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Embodiment 1

[0051] Such as figure 1 As shown, this embodiment provides an organic electroluminescent diode, including a first electrode and a second electrode 6 , and an organic light emitting layer 5 disposed between the first electrode and the second electrode 6 . The organic light emitting layer 5 is used to emit light of a specific color. The second electrode 6 is arranged close to the light emitting side of the organic electroluminescence diode. The first electrode includes a reflective conductive layer 2 , and the surface of the reflective conductive layer 2 close to the second electrode 6 has an uneven structure. figure 1The straight line with the arrow in the middle indicates the outgoing direction of the light emitted by the organic electroluminescence diode.

[0052] In the above technical solution, the first electrode of the organic electroluminescence diode includes a reflective conductive layer, and the surface of the reflective conductive layer close to the second electrod...

Embodiment 2

[0089] In this embodiment, a method for manufacturing the organic electroluminescent diode in Embodiment 1 is provided, and the method includes:

[0090] forming a first electrode and a second electrode, and the second electrode is disposed close to the light-emitting side of the organic electroluminescent diode;

[0091] An organic light emitting layer is formed between the first electrode and the second electrode.

[0092] see Figure 7 As shown, the step of forming the first electrode includes:

[0093] A reflective conductive layer is formed, and an uneven structure is formed on the surface of the reflective conductive layer close to the second electrode.

[0094] In the organic electroluminescent diode prepared by the above manufacturing method, the first electrode includes a reflective conductive layer, and an uneven structure is formed on the surface of the reflective conductive layer close to the second electrode. By forming the uneven structure, the first electrode ...

Embodiment 3

[0141] This embodiment provides a display substrate and a method for manufacturing the display substrate. The display substrate adopts the organic electroluminescence diode in the first embodiment. The manufacturing method of the display substrate includes the manufacturing method of the organic electroluminescent diode in the second embodiment. As for the specific structure and process steps of the display substrate, reference may be made to the prior art, which will not be described in detail here.

[0142] This embodiment also provides a display device, including the above-mentioned display substrate.

[0143] In the above technical solution, since the microcavity effect of the organic electroluminescent diode can be weakened or even eliminated, and the light scattering effect can be increased, the viewing angle problem of the display product can be eliminated and the display effect can be guaranteed.

[0144] The display device may be any product or component with a displ...

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PUM

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Abstract

The invention relates to the technical field of display and discloses an organic electroluminescent diode, a display substrate, methods for manufacturing the same, and a display device. A first electrode of the organic electroluminescent diode comprises a reflective conductive layer, the surface near a second electrode of the reflective conductive layer has an uneven structure, and the uneven structure is arranged such that cavities formed between the first electrode and the second electrode are inconsistent in cavity thickness. If there is a microcavity effect, the microcavity effect can be weakened or even eliminated. The uneven structure can scatter light, increase the light exit angle and enhance the light-emitting uniformity of devices. The use of the organic electroluminescent diode can eliminate the viewing angle problem of the display product and ensure the display effect of the display product.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an organic electroluminescent diode, a display substrate and a manufacturing method thereof, and a display device. Background technique [0002] Organic light-emitting diode (OLED) has the advantages of self-luminescence, fast response, wide viewing angle, high brightness, thin and flexible, etc., its potential market prospect is optimistic by the industry, and it has become the main development direction of the next generation display technology. [0003] According to the direction of light emission, OLED can be divided into bottom emission type and top emission type. Among them, the light of the top emission type OLED device is taken out from the top. This device structure can greatly improve the display because it is not affected by the bottom drive of the device. The opening ratio of the panel. Top-emitting OLED devices generally use a reflective metal bottom electrode and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/50H01L51/52H01L51/56
CPCH10K50/00H10K50/805H10K50/856H10K71/00H10K50/813H10K50/818H10K2102/101H10K2102/351H10K71/611H10K2102/00
Inventor 宫奎段献学李纪龙崔海峰
Owner BOE TECH GRP CO LTD
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