Compound, hole transport material, organic electroluminescent device and display apparatus

A compound and unsubstituted technology, applied in the field of organic light-emitting display, can solve the problems of restricting the display function and development of OLED display devices, inability to balance efficiency and life, and low hole migration rate, achieving high bond energy, reducing driving voltage, The effect of improving luminous efficiency
CN112125873APending Publication Date: 2020-12-25YANTAI XIANHUA CHEM TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
YANTAI XIANHUA CHEM TECH CO LTD
Publication Date
2020-12-25

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Abstract

The present invention provides a compound as shown in a general formula (I), which can be used in hole transport materials. The compound has a fluorene fused ring linked ortho-substituted phenyl triarylamine parent structure, is high in bond energy among atoms, has good thermal stability, is beneficial to solid accumulation among molecules, and is high in hole transition capability. When the compound is applied to a hole transport layer, a proper energy level level exists between the compound and an adjacent layer, hole injection and migration are facilitated, the driving voltage can be effectively reduced, meanwhile, the hole migration rate is high, and the luminous efficiency of an organic electroluminescent device can be effectively improved. The invention also provides a hole transportmaterial containing the compound as shown in the general formula (I), an organic electroluminescent device and a display apparatus.
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Description

technical field

[0001] The invention relates to the field of organic light-emitting display, in particular to a compound, a hole transport material, an organic electroluminescent device and a display device. Background technique

[0002] Organic electroluminescent display (hereinafter referred to as OLED) has a series of advantages such as self-luminescence, low-voltage DC drive, full curing, wide viewing angle, light weight, simple composition and process, etc. Compared with liquid crystal display, organic electroluminescent display is not It requires a backlight source, has a large viewing angle and low power, and its response speed can reach 1000 times that of a liquid crystal display, but its manufacturing cost is lower than that of a liquid crystal display with the same resolution. Therefore, organic electroluminescent devices have very broad application prospects. With the continuous advancement of OLED technology in the two major fields of lighting and display, organ...

Claims

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