Organic light-emitting display panel and display device

US10516125B1 · kind B1 · utility

Assignee

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

Inventors

• Xiaoxi Na · Shanghai, CN
• Jinghua Niu · Shanghai, CN
• Xiangcheng Wang · Shanghai, CN
• Qing-Man Zhu · Kunshan, CN
• Shuang Cheng · Shanghai, CN
• Lei Wen · Longbeilingcun, CN
• Jun Lin · New Taipei, TW

Key dates

• Filing date: Oct 9, 2018
• Grant date: Dec 24, 2019
• Expiry date: Oct 9, 2038

Classification

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

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 anode, cathode and organic functional layer. The organic functional layer includes an organic light-emitting layer, a first and second electron transmission layer and an electron injection layer. The first electron transmission layer and electron injection layer include a first dopant containing an alkaline earth metal element or a rare earth metal element. A work function φ1 of the electron injection layer and a work function φ2 of the cathode satisfy: φ1<φ2, and the work function φ1 of the electron injection layer and a work function φ3 of the first dopant satisfy: φ1≥φ3. LUMO1 and LUMO2 satisfy: |LUMO1−LUMO2|<0.18 eV.