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:
Oct. 04, 2022
Filed:
Aug. 29, 2018
Shijiazhuang Chengzhi Yonghua Display Material Co., Ltd., Hebei, CN;
Jianhua Cao, Hebei, CN;
Liang Dong, Hebei, CN;
Shibo Wang, Hebei, CN;
Jianchuan Zhang, Hebei, CN;
Yan Sui, Hebei, CN;
Ruimao Hua, Hebei, CN;
Abstract
There is provided an imidazole derivative, wherein the structural formula of the imidazole derivative is as represented by formula I: There is further provided a material containing the imidazole derivative and an organic light-emitting device containing the imidazole derivative. The imidazole derivative has an excellent carrier transport capacity, and the organic light-emitting device produced by using the material has obviously reduced starting voltage and improved luminous efficiency and luminance; and due to the features such as relatively good film-forming performance and simple material synthesis and purification methods which are applicable to mass production, the imidazole derivative is an ideal option for an electron transport material of organic light-emitting devices.