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:
Dec. 11, 2018
Filed:
Apr. 17, 2015
Kyulux, Inc., Fukuoka-shi, Fukuoka, JP;
Jie Li, Fukuoka, JP;
Qisheng Zhang, Fukuoka, JP;
Hiroko Nomura, Fukuoka, JP;
Chihaya Adachi, Fukuoka, JP;
KYULUX, INC., Fukuoka, JP;
Abstract
An organic light-emitting device containing a compound having a lone electron pair and a π electron orbital, the compound emitting fluorescent light by such a mechanism that when at least a part of electrons constituting the lone electron pair is excited to an excited triplet statenπ* through nπ* transition, the part of electrons undergoes inverse intersystem crossing from the excited triplet statenπ* to an excited singlet statenπ*, and returns from the excited singlet statenπ* to the ground state, at which the fluorescent light is emitted. The organic light-emitting device has a high light emission efficiency.