Organic light emitting diode, display panel and display device

US11374191B2 · kind B2 · utility

Assignee

• Yungu (Gu'an) Technology Co., Ltd. · CN

Inventors

• Weiwei Li · Langfang, CN
• Lin He · Irvine, US
• Mengzhen LI · Beijing, CN
• Jingwen Tian · Langfang, CN
• Tiantian LI · 东风镇, CN

Key dates

• Filing date: May 22, 2020
• Grant date: Jun 28, 2022
• Expiry date: Dec 29, 2040

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10K2101/00

Abstract

Provided are an OLED, display panel and display device. The OLED includes a first electrode, a second electrode, a light emitting layer and at least one blocking layer. The second electrode is arranged opposite to the first electrode. The light emitting layer is arranged between the first electrode and the second electrode. The blocking layer is arranged between the light emitting layer and the second electrode and/or between the light emitting layer and the first electrode. Each blocking layer of the at least one blocking layer comprises at least two blocking materials, electron mobility of at least one blocking material of the at least two blocking materials is lower than a first preset value, electron mobility of at least another blocking material of the at least two blocking materials is higher than a second preset value, and the first preset value is lower than the second preset value.