The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 09, 2026
Filed:
Apr. 26, 2022
Beijing Summer Sprout Technology Co., Ltd., Beijing, CN;
Zhihong Dai, Beijing, CN;
Qiang Wang, Beijing, CN;
Le Wang, Beijing, CN;
Han Zhang, Beijing, CN;
Junfei Wang, Beijing, CN;
Menglan Xie, Beijing, CN;
Cuifang Zhang, Beijing, CN;
Nannan Lu, Beijing, CN;
Qi Zhang, Beijing, CN;
Dongdong Zhang, Beijing, CN;
Xueyu Lu, Beijing, CN;
Chuanjun Xia, Beijing, CN;
Chi Yuen Raymond Kwong, Beijing, CN;
BEIJING SUMMER SPROUT TECHNOLOGY CO., LTD., Beijing, CN;
Abstract
Provided is an electroluminescent device. The organic electroluminescent device comprises an anode, a cathode and an organic layer disposed between the anode and the cathode, where the organic layer comprises a first compound having a structure of H-L-E and a second compound having a general formula of M(L)(L)(L), and the device has at least one maximum emission wavelength greater than 630 nm. Such a new material composition consisting of the first compound and the second compound can be used in a light-emitting layer of the electroluminescent device. The new material composition can achieve the emission of deep red light in the device, significantly reduce a drive voltage of the device while significantly improving device efficiency and/or a device lifetime, and provide better device performance. Further provided is a display assembly.