Organic light emitting device and display device

US12342672B2 · kind B2 · utility

Assignee

• BOE Technology Group Co., Ltd. · CN

Inventors

• Kun Ma · Nanhu, CN
• Lei Chen · Chengdu, CN
• Rongrong GAO · Beijing, CN

Key dates

• Filing date: Jan 26, 2021
• Grant date: Jun 24, 2025
• Expiry date: May 24, 2043

Classification

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

Abstract

The present disclosure provides an organic light emitting device, including a first electrode, a second electrode and an emitting layer disposed between the first electrode and the second electrode. A hole transporting layer is disposed between the first electrode and the emitting layer. An electron transporting layer is disposed between the second electrode and the emitting layer. The ratio of the hole mobility of the hole transporting layer to the electron mobility of the electron transporting layer is about 10 to 500.