An organic light emitting diode, display panel and display device

A light-emitting diode and organic technology, applied in the direction of organic light-emitting devices, organic light-emitting device parameters, electric solid-state devices, etc., can solve the problems of short life of organic light-emitting diodes, achieve the effects of slowing down performance decay, improving life, and reducing damage
CN109326735BActive Publication Date: 2021-01-01YUNGU GUAN TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
YUNGU GUAN TECH CO LTD
Publication Date
2021-01-01

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Abstract

The embodiment of the present invention discloses an organic light emitting diode, a display panel, and a display device. The organic light emitting diode includes: a first electrode, a second electrode, a light emitting layer, and at least one barrier layer; the first electrode is arranged opposite to the second electrode The light-emitting layer is located between the first electrode and the second electrode; the barrier layer is located between the light-emitting layer and the second electrode, and / or the barrier layer is located between the light-emitting layer and the first electrode; wherein, the same barrier layer includes At least two kinds of barrier materials, and the electron mobility of at least one barrier material is lower than a first preset value, the electron mobility of at least another barrier material is higher than a second preset value, and the first preset value is lower than Second default value. The technical solution provided by the embodiments of the present invention can control the injection amount of electrons and holes, thereby balancing the number of electrons and holes in the light-emitting layer, reducing the damage of excess electrons to the film layer material and interface, and improving the efficiency of organic light-emitting diodes. life.
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Description

technical field

[0001] Embodiments of the present invention relate to the field of display technology, and in particular, relate to an organic light emitting diode, a display panel and a display device. Background technique

[0002] Organic light-emitting diodes (Organic Light-Emitting Diode, OLED) use self-luminous light-emitting mechanism and do not require a backlight source. When it is applied to display panels and display devices, the overall thickness of the display panel and display devices is relatively thin, which is conducive to realizing its Thin and light design. At the same time, organic light-emitting diodes have the advantages of high display brightness, wide viewing angle, and fast response speed.

[0003] With the development of organic light-emitting diode materials, the material of the light-emitting layer in the organic light-emitting diode with excellent performance tends to be electron-transporting, resulting in a short lifetime of the organic light-em...

Claims

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