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. 06, 2022
Filed:
Mar. 30, 2020
Xiamen Tianma Micro-electronics Co., Ltd., Xiamen, CN;
Quan Ran, Shanghai, CN;
Lei Zhang, Shanghai, CN;
Wei Gao, Shanghai, CN;
Jinghua Niu, Shanghai, CN;
Wenpeng Dai, Shanghai, CN;
Xiamen Tianma Micro-Electronics Co., Ltd., Xiamen, CN;
Abstract
The present disclosure relates provides an compound represented by Chemical Formula 1, in which Ar, Ar, Arand Arare C6-C40 aryl, or C5-C40 heteroaryl; Rand Rare —C(R)—, —N(R)—, —O—, or —S—; X, Xand Xare C or N; Land Lare phenylene, naphthylene, or biphenylene; Yand Yare each an electron-withdrawing group selected from a N-containing heterocyclic group, or a cyano-containing group. The compound of the present disclosure has bipolar characteristics of simultaneously transmitting holes and electrons. The bipolar transmission host is beneficial to charge transmission balance in the light-emitting layer, and can widen the exciton recombination region, to simplify the device structure and improving device efficiency. The present disclosure further provides a display panel and a display apparatus.