Organic light-emitting diode and display panel

US11362294B2 · kind B2 · utility

Assignee

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

Inventors

• Weiwei Li · Langfang, CN
• Chao Chi PENG · Sugar Land, US
• Lin He · Irvine, US
• Jingwen Tian · Langfang, CN
• Tiantian LI · 东风镇, CN
• Mengzhen LI · Beijing, CN

Key dates

• Filing date: May 4, 2020
• Grant date: Jun 14, 2022
• Expiry date: Jun 17, 2040

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10K2102/351

Abstract

Provided is an organic light-emitting diode. The organic light-emitting diode includes a first electrode, a second electrode, a light-emitting layer and a hole blocking layer, where the first electrode and the second electrode are oppositely disposed; the light-emitting layer is disposed between the first electrode and the second electrode; the hole blocking layer is disposed between the light-emitting layer and the second electrode; and the hole blocking layer includes at least two hole blocking sub-layers which are stacked, where a lowest unoccupied molecular orbital (LUMO) energy level decreases sequentially in the at least two hole blocking sub-layers.