Organic light emitting device

US11444267B2 · kind B2 · utility

Assignee

• GU'AN YEOLIGHT TECHNOLOGY CO., LTD. · CN

Inventors

• Yuhao Li · Shanghai, CN
• Lixue Guo · Laishui, CN
• Jun Wang · Qinhuangdao City, CN
• Jing Xie · Princeton, US
• Yingguang Zhu · Gu'an, CN
• Yonglan Hu · Laishui, CN

Key dates

• Filing date: Jul 10, 2019
• Grant date: Sep 13, 2022
• Expiry date: Dec 17, 2039

Classification

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

Abstract

The organic light emitting device comprises a substrate, a first electrode, an organic layer, a second electrode and a packaging structure which are provided in sequence; the organic layer comprises a light-emitting layer, a hole transport functional layer and an electron transport functional layer located on two sides of the light-emitting layer; a high-energy light sacrificial layer is provided between an electrode corresponding to a light-emergent face of a light-emitting device and the light-emitting layer, and the high-energy light sacrificial layer contains a light absorbing material; a first additional functional layer for avoiding electroluminescence is provided between the high-energy light sacrificial layer and the light-emitting layer.