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. 30, 2020
Filed:
Dec. 18, 2014
Toray Industries, Inc., Tokyo, JP;
Guangnan Jin, Shanghai, CN;
Peng Wang, Shanghai, CN;
Fangrong Xu, Shanghai, CN;
Lingzhi Zhong, Shanghai, CN;
Takeshi Ishigaki, Shanghai, CN;
Daisaku Tanaka, Otsu, JP;
Takeshi Ikeda, Otsu, JP;
Takuya Nishiyama, Otsu, JP;
Toray Industries, Inc., Tokyo, JP;
Abstract
Provided are an aromatic amine compound as represented by formula (1), used for improving light extraction efficiency and color purity of an organic light-emitting element, an organic light-emitting element material containing the aromatic amine compound, an organic light-emitting element covering layer material containing the aromatic amine compound, and an organic light-emitting element containing the aromatic amine compound. The organic light-emitting element achieves high light-emitting efficiency and color reproducibility. The organic light-emitting element can be used as organic EL display, backlight source for liquid crystal display, illumination, light source for measurement devices, indication board or identification lamp etc. The organic light-emitting element significantly improves light extraction efficiency and has superior color purity.