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Organic light emitting diode, organic light emitting display substrate and preparation method, and display device

A light-emitting diode and light-emitting display technology, which is applied in semiconductor/solid-state device manufacturing, electrical components, electric solid-state devices, etc., can solve the problems that display devices need to be improved, and achieve the effects of alleviating color shift, improving performance, and avoiding luminous efficiency

Pending Publication Date: 2020-02-28
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the current organic light-emitting diodes, organic light-emitting display substrates, preparation methods and display devices still need to be improved.

Method used

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  • Organic light emitting diode, organic light emitting display substrate and preparation method, and display device
  • Organic light emitting diode, organic light emitting display substrate and preparation method, and display device
  • Organic light emitting diode, organic light emitting display substrate and preparation method, and display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Preparation includes metal reflective layer, anode, P-doped-blue hole transport auxiliary layer, hole transport layer, electron blocking layer, blue light emitting layer, hole blocking layer, electron adjustment layer, electron transport layer, electron injection layer And the cathode, the diode of the light extraction layer. Wherein the electron regulating layer is an azole compound.

Embodiment 2

[0057] The rest of the structure is the same as that of Example 1, except that the electron regulation layer uses quinine derivatives.

Embodiment 3

[0059] The rest of the structure is the same as that of Example 1, except that the electron regulation layer uses oxaline derivatives.

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PUM

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Abstract

The invention discloses an organic light emitting diode, an organic light emitting display substrate and a preparation method, and a display device. The organic light emitting diode comprises a firstelectrode, a hole transport layer, a light emitting layer, an electron adjusting layer which is located on the side, away from the hole transport layer, of the light emitting layer and is configured to reduce the transport rate of electrons, an electron transport layer, and a second electrode which is located on the side, away from electron adjusting layer, of the electron transport layer. Therefore, the organic light emitting diode can properly reduce the transport rate of electrons, prevent electron and hole balance from being broken due to the fact that holes are difficult to inject into the light emitting layer after long-term use, and further relieve the influence of material degradation on light emission after long-term use of the light emitting device.

Description

technical field [0001] The invention relates to the field of display, in particular to an organic light emitting diode, an organic light emitting display substrate, a preparation method and a display device. Background technique [0002] Due to the advantages of high efficiency, high brightness, low driving voltage, fast response speed, and the ability to realize large-area photoelectric display, organic electroluminescent devices (Organic Light Emitting Device, OLED) are more and more used in the display field. And with the development of electronic technology, electronic devices such as mobile phones have increasingly strict requirements on the power consumption of display components, so electroluminescent devices (EL devices, such as OLEDs) are required to have higher luminous efficiency. For this reason, electron transport materials with relatively fast electron mobility are mostly used in current EL devices to form an electron transport layer (ETL). [0003] However, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/50H01L51/56H01L51/54H01L27/32
CPCH10K59/00H10K85/60H10K30/865H10K50/15H10K50/16H10K71/00
Inventor 文官印李彦松杜小波
Owner BOE TECH GRP CO LTD