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:
Sep. 23, 2025
Filed:
Apr. 12, 2021
Beijing Summer Sprout Technology Co., Ltd., Beijing, CN;
Han Zhang, Beijing, CN;
Le Wang, Beijing, CN;
Junfei Wang, Beijing, CN;
Qiang Wang, Beijing, CN;
Chi Yuen Raymond Kwong, Beijing, CN;
Chuanjun Xia, Beijing, CN;
BEIJING SUMMER SPROUT TECHNOLOGY CO., LTD., Beijing, CN;
Abstract
Provided are an electroluminescent material and device. The electroluminescent material is a compound having an indole- and pyrrole-fused azamacrocycle structure segment which is connected to quinazoline having a substitution on a specific ring, quinoxaline having a substitution on a specific ring, or a similar structure thereof, and can be used as the host material in the electroluminescent device. These novel compounds can obtain a lower driving voltage, effectively improve device efficiency, greatly prolong device lifetime, and provide better device performance. Further provided are an electroluminescent device and a compound formulation.