Light-emitting device and OLED display panel

US12364096B2 · kind B2 · utility

Assignee

• WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.

Inventors

• Zhibing Yi · Longbeilingcun, CN
• Jie Yang · Foster City, US
• Haitao Xu · Hubei, CN
• Zhengshen HUA · Hubei, CN
• Xiaosu Jiang · Hubei, CN
• Yu Zhang · Guiyang, CN
• Munjae LEE · Hubei, CN

Key dates

• Filing date: Jan 11, 2022
• Grant date: Jul 15, 2025
• Expiry date: Jan 11, 2042

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10K50/125

Abstract

A light-emitting device and an OLED display panel are provided. The light-emitting device includes a charge generation layer. The charge generation layer includes an N-type electron generation layer, a P-type hole generation layer, and a metal activation layer disposed between the two. The metal activation layer is in surface contact with of the N-type electron generation layer and the P-type hole generation layer. It activates a surface energy at contact surfaces, prevents an accumulation of charges to form an electric field in an internal space, and improves a performance and a lifespan of the light-emitting device.