Organic light emitting diode, display panel and display device

Abstract

The invention discloses an organic light emitting diode, a display panel and a display device to improve the voltage stability of the organic light emitting diode during long-term operation, reduce the power consumption of the organic light emitting diode, and improve the service life and luminous efficiency of the organic light emitting diode. An organic light-emitting diode includes an anode, a cathode, at least two light-emitting layers arranged between the anode and the cathode, and a charge generation layer arranged between every two adjacent light-emitting layers, wherein: the charge generation layer includes The first doped layer, the intermediate layer and the second doped layer are provided; the first doped layer includes a P-type semiconductor material, and the second doped layer includes an N-type semiconductor material; the P-type semiconductor material includes a P-type inorganic semiconductor material, P-type metal dopant or P-type organic semiconductor material, N-type semiconductor material includes N-type inorganic semiconductor material, N-type metal dopant or N-type organic semiconductor material.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an organic light emitting diode, a display panel and a display device. Background technique [0002] Organic electroluminescence is a phenomenon in which organic materials are excited by electric energy to emit light. Organic electroluminescent devices have low driving voltage, high luminous brightness, high luminous efficiency, wide luminous viewing angle, fast response speed, ultra-thin, light weight and compatible flexibility. Substrates and other advantages occupy an important position in the display field. [0003] Organic Light-Emitting Diode (OLED for short), as a representative product of organic electroluminescent devices, has been extensively studied. [0004] Please refer to figure 1 , a common organic light emitting diode in the prior art includes sequentially stacked cathode 0100, electron injection layer 01, first electron transport layer 02, first light emitting...

AI Technical Summary

Problems solved by technology

The P-type organic semiconductor layer 051 and the N-type organic semiconductor layer 052 of the charge generation layer 05 are in direct contact with each other. As the cumulative working time of the organic light-emitting diode increases, the materials of the P-type organic semiconductor layer 051 and the N-type organic semiconductor layer 052 diffuse each other. As a result, the driving voltage of the organic light-emitting diode adopting this structure gradually increases, and the luminous efficiency and service life of the organic light-emitting diode decrease.

Images