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Organic electroluminescent compound and organic electroluminescent device

An electroluminescence and compound technology, applied in the field of organic electroluminescence devices, can solve the problems of poor thermal stability, short lifespan of organic light-emitting devices, and reduced use degree, and achieves improved film-forming properties, high thermal and chemical stability, and prevention of crystallization Effect

Active Publication Date: 2022-08-05
EVERDISPLAY OPTRONICS (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The glass transition temperature Tg of this type of material is generally low and the thermal stability is poor, resulting in a short lifetime of organic light-emitting devices using phosphorescent materials, thus reducing the use of such materials

Method used

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  • Organic electroluminescent compound and organic electroluminescent device
  • Organic electroluminescent compound and organic electroluminescent device
  • Organic electroluminescent compound and organic electroluminescent device

Examples

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Embodiment Construction

[0029] Example implementations will now be described more fully with reference to examples. Example embodiments, however, can be embodied in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art.

[0030] In an embodiment of the present invention, an organic electroluminescent compound and an organic electroluminescent device having the same are provided, the compound having the structure shown in formula I:

[0031]

[0032] where L 1 is a direct bond, a substituted or unsubstituted C6-C30 aryl group, or a substituted or unsubstituted C3-C30 heteroaryl group;

[0033] Z 1 -Z 4 One of them is N, and the rest are CH or C;

[0034] X is O or S.

[0035] Preferred L 1 Selected from direct bond, phenyl, naphthyl, pyridyl, quinolyl, biphenyl, fluorenyl, dibenzo...

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PUM

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Abstract

The invention provides an organic electroluminescent compound and an organic electroluminescent device, and the organic electroluminescent compound has the following structure: L1 is a directly bonded, substituted or unsubstituted C6-C30 aryl group, or a substituted or unsubstituted C3-C30 heteroaryl group; one of Z1-Z4 is N, and the rest are CH or C; x is O or S. The compound provided by the invention has relatively high energy efficiency, and the device has relatively low voltage and relatively long service life.

Description

technical field [0001] The present invention relates to the field of organic electroluminescent devices, in particular to an organic electroluminescent compound and an organic electroluminescent device having the same. Background technique [0002] Organic Electroluminescence (OLED, Organic Light Emission Diodes) device technology features self-luminescence, wide viewing angle, low energy consumption, high efficiency, thinness, rich colors, fast response speed, wide temperature range, low driving voltage, flexible and bendable With the unique advantages of transparent display panel and environmental friendliness, the application prospect is very broad. It generally consists of two opposing electrodes and at least one layer of an organic light-emitting compound interposed between the two electrodes. Charges are injected into the organic layer formed between the anode and cathode to form electron and hole pairs, resulting in light emission from organic compounds with fluoresc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D491/048C09K11/06H01L51/54
CPCC07D491/048C09K11/06C09K2211/1033C09K2211/1037C09K2211/1088C09K2211/1092H10K85/657H10K85/6576H10K85/6574Y02E10/549
Inventor 田帅翟晓桐孙加宝甘国月
Owner EVERDISPLAY OPTRONICS (SHANGHAI) CO LTD
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