Organic light-emitting diode with intermediate layer made of ytterbium element, display panel and display device

US10665821B2 · kind B2 · utility

Assignee

• Shanghai Tianma AM-OLED Co., Ltd. · CN

Inventors

• Honghu Ma · Shanghai, CN
• Jinghua Niu · Shanghai, CN
• Xiangcheng Wang · Shanghai, CN
• Run Yang · Beijing, CN

Key dates

• Filing date: Feb 5, 2018
• Grant date: May 26, 2020
• Expiry date: Apr 2, 2038

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10K2101/40

Abstract

The disclosure discloses an organic light-emitting diode, a display panel and a display device. The organic light-emitting diode includes an anode, a cathode, at least two emitting layers arranged between the anode and the cathode, and a charge generation layer arranged between every two adjacent emitting layers, where the charge generation layer includes a first doping layer, an intermediate layer and a second doping layer which are arranged in sequence along the direction far away from the cathode, where the first doping layer includes a P-type semiconductor material, and the second doping layer includes a N-type semiconductor material; the P-type semiconductor material includes a P-type inorganic semiconductor material, a P-type metal dopant or a P-type organic semiconductor material, and the N-type semiconductor material includes a N-type inorganic semiconductor material, a N-type metal dopant or a N-type organic semiconductor material.