Compound and organic electroluminescence device, display device

By improving the light extraction layer material of OLED devices with novel compounds, the problem of light confinement was solved, the luminous efficiency was improved and the driving voltage was reduced, resulting in higher current efficiency and lower driving voltage.

CN117800850BActive Publication Date: 2026-06-19FUYANG SINEVA MATERIAL TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
FUYANG SINEVA MATERIAL TECHNOLOGY CO LTD
Filing Date
2021-04-27
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

The luminous efficiency of existing OLED devices is low, mainly because light is confined inside the device, and the existing light extraction materials are limited in variety and have poor performance, which affects the efficiency and lifespan of the devices.

Method used

By using novel compounds as light extraction layer materials, the film-forming performance and transmittance are improved by adjusting the material structure, and the transport layer or injection layer of organic electroluminescent devices is prepared by solution method to improve light extraction efficiency.

Benefits of technology

The material improves the luminous efficiency of OLED devices and reduces the driving voltage. It is suitable for solution preparation and has high current efficiency and low driving voltage.

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Abstract

This invention relates to the field of electroluminescence, and discloses a compound and an organic electroluminescent device and display device. The structural formula of the compound is shown in formula (I). Organic electroluminescent devices using the material of the compound of this invention have lower driving voltage and higher current efficiency. At the same time, the compound of this application can be used to prepare the transport layer or injection layer of the organic electroluminescent device by solution method.
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