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Functional material, light-emitting substrate and preparation method thereof, and light-emitting device

A function and substrate technology, applied in the fields of light-emitting substrates and their preparation, light-emitting devices, materials with hole injection and/or hole transport functions, and can solve problems such as functional layer crystallization plugging

Pending Publication Date: 2021-06-08
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is used to solve the problem of crystallization plugging that is easy to occur when the functional layer is formed by evaporation in the related art

Method used

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  • Functional material, light-emitting substrate and preparation method thereof, and light-emitting device
  • Functional material, light-emitting substrate and preparation method thereof, and light-emitting device
  • Functional material, light-emitting substrate and preparation method thereof, and light-emitting device

Examples

Experimental program
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Effect test

preparation example Construction

[0106] Some embodiments of the present disclosure provide a method for preparing a light-emitting substrate, including:

[0107] A plurality of light emitting devices 13 are formed on a substrate 11 . Wherein, the material of the functional layer 134 in at least one light-emitting device 13 is selected from the above-mentioned materials having hole injection and / or hole transport functions. The material with hole injection and / or hole transport functions includes a host material, and a crystallization inhibitor doped in the host material, the crystallization inhibitor can inhibit the crystallization of the host material during evaporation, and the crystallization inhibitor has voids hole injection and / or hole transport functions.

[0108] In some embodiments, in the case where the light emitting substrate 1 includes a pixel defining layer 12, and the pixel defining layer 12 has a plurality of openings Q, forming a plurality of light emitting devices 13 on the substrate 11 may...

experiment example 1

[0122] In Experimental Example 1, the material of the functional layer 134 is selected from a hole injection material and a crystallization inhibitor, wherein the hole injection material is the same as the hole injection material in Comparative Example 1, and the crystallization inhibitor is N,N'-diphenyl -N,N'-bis(3-methylphenyl)-1,1'-biphenyl-4,4'-diamine, the mass ratio of hole injection material and crystallization inhibitor is 90:10, by distilling Plating is performed on the substrate 11 on which the pixel defining layer 12 is formed to form a thin film having a hole injection function.

Embodiment 2

[0124] In Experimental Example 2, the material of the functional layer 134 is selected from a hole transport material and a crystallization inhibitor, wherein the hole transport material is the same as the hole transport material in Comparative Example 2, and the crystallization inhibitor is N,N'-diphenyl -N,N'-bis(3-methylphenyl)-1,1'-biphenyl-4,4'-diamine, the mass ratio of hole transport material and crystallization inhibitor is 97:3, by distilling Plating is performed on the substrate 11 on which the pixel defining layer 12 is formed to form a thin film having a hole injection function.

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Abstract

The invention relates to the technical field of illumination and display, in particular to a material with hole injection and / or hole transmission functions, a light-emitting substrate and a preparation method thereof, and a light-emitting device. The problem that crystallization plugging is prone to occurring when a functional layer is formed through evaporation in the prior art is solved. The material with hole injection and / or hole transmission functions comprises: a matrix material; and a crystallization inhibitor doped in the matrix material; wherein the crystallization inhibitor can inhibit crystallization of the matrix material in the evaporation process, and the crystallization inhibitor has a hole injection and / or hole transmission function.

Description

technical field [0001] The present disclosure relates to the technical field of illumination and display, and in particular to a material with hole injection and / or hole transport functions, a light-emitting substrate, a preparation method thereof, and a light-emitting device. Background technique [0002] OLED (Organic Light-Emitting Diode, Organic Light-Emitting Diode) has the characteristics of self-illumination, wide viewing angle, fast response time, high luminous efficiency, low operating voltage, thin substrate thickness, large-size and flexible substrates and simple manufacturing process. Known as the next generation of "star" display technology. Contents of the invention [0003] The main purpose of the present invention is to provide a material with hole injection and / or hole transport functions, a light-emitting substrate, a preparation method thereof, and a light-emitting device. It is used to solve the problem that crystallization plugging easily occurs when ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/54H01L51/50H01L51/56H01L27/32
CPCH10K59/10H10K85/60H10K85/615H10K85/6565H10K85/631H10K85/626H10K85/633H10K85/654H10K85/6572H10K50/155H10K50/17H10K71/00H10K71/30H10K59/1201H10K59/35
Inventor 李彦松吴海东王蓓杜小波
Owner BOE TECH GRP CO LTD
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