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Light-emitting device and preparation method thereof, display substrate and display device

A technology of light-emitting devices and light-emitting layers, which is applied in the manufacture of semiconductor/solid-state devices, electric solid-state devices, semiconductor devices, etc., can solve the problems of color mixing and affecting the light-emitting effect of quantum dot light-emitting diodes, etc.

Pending Publication Date: 2021-07-02
BEIJING BOE TECH DEV CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the current quantum dot light-emitting diodes have color mixing problems. For example, red quantum dot light-emitting diodes should only emit red light, but contain weak green or blue light, which seriously affects the luminous effect of quantum dot light-emitting diodes.

Method used

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  • Light-emitting device and preparation method thereof, display substrate and display device
  • Light-emitting device and preparation method thereof, display substrate and display device
  • Light-emitting device and preparation method thereof, display substrate and display device

Examples

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preparation example Construction

[0061] The present invention also provides a method for preparing a light-emitting device L, Figure 5 The flow chart of the preparation method of the light-emitting device provided by the embodiment of the present invention, such as Figure 5 Shown, this preparation method comprises:

[0062] S11. Providing a substrate.

[0063] S12, forming a first electrode on the substrate. The first electrode may be an anode, and the material of the first electrode may include indium tin oxide. In this step, the first electrode may be formed by processes such as evaporation or sputtering.

[0064] S13, forming a light-emitting functional layer on a side of the first electrode away from the substrate. The light-emitting functional layer includes a light-emitting material configured to emit light in response to control of electrical signals on the first electrode and the second electrode, and the light emitted by the light-emitting material includes target light with a target color.

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Abstract

The invention provides a light-emitting device and a preparation method thereof, a display substrate and a display device, and relates to the technical field of display, and the light-emitting device comprises a first electrode and a second electrode which are oppositely arranged; a light-emitting functional layer which is located between the first electrode and the second electrode, wherein the light-emitting functional layer comprises a light-emitting material, the light-emitting material is configured to emit light in response to control of an electric signal on the first electrode and the second electrode, and light emitted by the light-emitting material comprises target light with a target color; the light-emitting functional layer is doped with a light-absorbing material, the light-absorbing material is configured to at least absorb mixed-color light, and the mixed-color light is light different from the target light in color. According to the invention, the mixed-color light emitted by the residual luminescent material can be absorbed, and the mixed-color light is prevented from influencing the display effect.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a light-emitting device and a preparation method thereof, a display substrate and a display device. Background technique [0002] With the in-depth development of quantum dot technology, the efficiency of electroluminescent quantum dot light-emitting diodes has been continuously improved, and has basically reached the level of industrialization. [0003] However, the current quantum dot light-emitting diodes have color mixing problems. For example, red quantum dot light-emitting diodes should only emit red light, but contain weak green or blue light, which seriously affects the luminous effect of quantum dot light-emitting diodes. Contents of the invention [0004] The present invention aims to solve at least one of the technical problems existing in the prior art, and proposes a light-emitting device, a manufacturing method thereof, a display substrate, and a display device. ...

Claims

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Application Information

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IPC IPC(8): H01L51/50H01L51/56H01L27/32
CPCH10K59/00H10K50/12H10K50/115H10K71/00
Inventor 王好伟
Owner BEIJING BOE TECH DEV CO LTD
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