Organic light-emitting display panel and display device with earth metal dopants

US11605795B2 · kind B2 · utility

Assignees

• WUHAN TIANMA MICROELECTRONICS CO., LTD. · CN
• WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH · CN

Inventors

• Shuang Cheng · Shanghai, CN
• Jinghua Niu · Shanghai, CN
• Xiangcheng Wang · Shanghai, CN
• Qing-Man Zhu · Kunshan, CN
• Yinhe Liu · Shanghai, CN
• Xiaoxi Na · Shanghai, CN
• Lei Wen · Longbeilingcun, CN

Key dates

• Filing date: Oct 11, 2018
• Grant date: Mar 14, 2023
• Expiry date: Apr 11, 2039

Classification

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

Abstract

Provided are an organic light-emitting display panel and a display device. The organic light-emitting display includes an array substrate and organic light-emitting components each having an anode, a cathode and an organic functional layer. The organic functional layer includes an organic light-emitting layer, a first electron transmission layer, and a hole injection layer. LUMO1 and LUMO4 satisfy: |LUMO1−LUMO4|<1.7 eV. HOMO5 and HOMO4 satisfy: |HOMO5−HOMO4|<1 eV. A work function φ1 of the first dopant and a work function φ4 of the cathode satisfy: φ1<φ4, and a work function φ2 of the second dopant and a work function φ3 of the anode satisfy: φ2>φ3.