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Dihydrobenzoindazole compound, organic electroluminescent device and display device

A technology of dihydrobenzoindazoles and compounds is applied in the field of organic electroluminescent devices and display devices, and dihydrobenzoindazoles, which can solve the problems of high driving voltage, low luminous efficiency, etc., and reduce driving voltage, the effect of improving luminous efficiency

Active Publication Date: 2019-03-22
FUYANG XINYIHUA MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a dihydrobenzoindazole compound, an organic electroluminescent device containing the compound and a display device with the organic electroluminescent device, which are used to solve the high Problems with driving voltage and low luminous efficiency

Method used

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  • Dihydrobenzoindazole compound, organic electroluminescent device and display device
  • Dihydrobenzoindazole compound, organic electroluminescent device and display device
  • Dihydrobenzoindazole compound, organic electroluminescent device and display device

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Embodiment 1

[0107] Application of the compound of the present invention as a hole transport layer in an organic electroluminescent device:

[0108] The organic electroluminescent device structure is:

[0109] ITO / HIL02(100nm) / HTL(40nm) / EM1(30nm) / ETL(20nm) / LiF(0.5nm) / Al(150nm).

[0110] One of them is a comparative organic electroluminescent device, the hole transport material is selected from NPB, and the hole transport material of other organic electroluminescent devices is selected from the material of the present invention.

[0111] In the production of the organic electroluminescent device in this embodiment, a glass substrate is selected, ITO is used as the anode material, HIL02 is used as the hole injection layer, EM1 is used as the main material of the organic light-emitting layer, TAZ is used as the electron transport layer material, and LiF / Al is used as the electron injection layer. layer / cathode material.

[0112] The preparation process of the organic electroluminescent devi...

Embodiment 2

[0126] Application of the compound of the present invention as a hole injection layer in an organic electroluminescent device:

[0127] The organic electroluminescent device structure is:

[0128] ITO / HIL02(100nm) / HTL(40nm) / EM1(30nm) / ETL(20nm) / LiF(0.5nm) / Al(150nm).

[0129] One of them is a comparative organic electroluminescence device, the hole injection material is HIL02, and the hole injection material of other organic electroluminescence devices is the material of the present invention.

[0130] In the production of the organic electroluminescent device in this embodiment, a glass substrate is selected, ITO is used as the anode material, NPB is used as the hole transport layer, EM1 is used as the main material of the organic light-emitting layer, TAZ is used as the electron transport layer material, and LiF / Al is used as the electron injection layer / cathode material.

[0131] The preparation process of the organic electroluminescent device in this embodiment is as follo...

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Abstract

The invention relates to the field of display technology, and particularly relates to a dihydrobenzoindazole compound, an organic electroluminescent device and a display device. The compound accordingto the invention is as shown in the Specification, wherein R1 is C1-C20 alkyl or substituted or unsubstituted C3-C20 cycloalkyl; Ar1 is selected from phenyl, phenanthryl, cyclopentaphenanthryl, spirobifluorenyl, pyrenyl, triphenylenyl, fluoranthenyl, indenofluorenyl, biphenyl, fluorenyl, benzofluorenyl and the like; and Ar2 and Ar3 are each independently selected from phenyl, naphthyl, anthryl, phenanthryl, cyclopentaphenanthryl, spirofluorenyl, pyrenyl, triphenylenyl, fluoranthenyl, indenofluorenyl and the like.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a dihydrobenzindazole compound, an organic electroluminescent device and a display device. Background technique [0002] Organic Light Emitting Display (OLED) is a new type of flat-panel display. Compared with Liquid Crystal Display (LCD), it has the advantages of thinness, lightness, wide viewing angle, active luminescence, and continuously adjustable luminous color. , low cost, fast response speed, low energy consumption, low driving voltage, wide operating temperature range, simple production process, high luminous efficiency and flexible display, etc., have attracted great attention from the industrial and scientific circles. [0003] The development of organic electroluminescent devices has promoted the research on organic electroluminescent materials. Compared with inorganic light-emitting materials, organic electroluminescent materials have the following advantages: orga...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D231/54H01L51/50H01L51/54
CPCC07D231/54H10K85/623H10K85/624H10K85/622H10K85/615H10K85/626H10K85/6572H10K50/171H10K50/15
Inventor 韩锦伟王占奇梁新顺
Owner FUYANG XINYIHUA MATERIAL TECH