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A light emitting diode, array substrate, light emitting device and display device

A technology of light-emitting diodes and array substrates, which is applied in the fields of light-emitting diodes, light-emitting devices, display devices, and array substrates, and can solve problems such as unbalanced injection of electrons and holes

Active Publication Date: 2019-11-01
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Embodiments of the present invention provide a light-emitting diode, an array substrate, a light-emitting device, and a display device, which can solve the problem of unbalanced injection of electrons and holes

Method used

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  • A light emitting diode, array substrate, light emitting device and display device
  • A light emitting diode, array substrate, light emitting device and display device
  • A light emitting diode, array substrate, light emitting device and display device

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Embodiment Construction

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0038] The principle of the embodiment of the present invention to solve the imbalance between electron and hole injection in the light-emitting diode is specifically: if the number of holes injected into the light-emitting layer is less than the number of electrons injected into the light-emitting layer, the energy level of the hole transport layer can be reduced by regulation , and the energy level is composed of the energy state occupied by electrons, the in...

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Abstract

Embodiments of the present invention provide a light-emitting diode, an array substrate, a light-emitting device, and a display device, which relate to the field of electroluminescence technology and can solve the problem of unbalanced injection of electrons and holes. The light-emitting diode includes an anode, a hole transport layer, a light-emitting layer, an electron transport layer, and a cathode arranged in sequence, and the light-emitting diode also includes a first auxiliary electrode and a second auxiliary electrode arranged on the side of the anode away from the hole transport layer. An insulating layer, the first insulating layer is located between the first auxiliary electrode and the anode; and / or, the light emitting diode further includes a second electrode disposed on the side of the cathode away from the electron transport layer An insulating layer and a second auxiliary electrode, the second insulating layer is located between the second auxiliary electrode and the cathode. It is used to solve the problem of unbalanced injection of electrons and holes in light-emitting diodes.

Description

technical field [0001] The invention relates to the technical field of electroluminescence, in particular to a light emitting diode, an array substrate, a light emitting device and a display device. Background technique [0002] A light-emitting diode is a device that is directly excited by an electric current to emit light. The current light-emitting diodes include quantum dot light-emitting diodes (QLED for short) and organic light-emitting diodes (Organic Light-Emitting Diode, OLED for short). ). [0003] figure 1 It is a structural schematic diagram of an existing light-emitting diode. Such as figure 1 As shown, the structure of the light emitting diode includes an anode 10 , a hole transport layer 20 , a light emitting layer 30 , an electron transport layer 40 and a cathode 50 arranged in sequence. The light-emitting principle of the light-emitting diode is: under the action of an electric field, holes are injected from the anode 10 into the valence band of the ligh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L27/32H01L51/52
CPCH10K59/12H10K50/814H10K50/824H01L27/1214H10K59/123H10K59/17H10K50/115H10K50/80H10K50/813H10K50/822H10K59/805H01L27/124H10K50/15H10K50/16H10K50/171H10K50/805
Inventor 徐威谷新
Owner BOE TECH GRP CO LTD