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. 03, 2019
Filed:
Mar. 04, 2015
Kyulux, Inc., Fukuoka-shi, Fukuoka, JP;
Chihaya Adachi, Fukuoka, JP;
Takuma Yasuda, Fukuoka, JP;
Takuro Nishimoto, Fukuoka, JP;
Sae Youn Lee, Fukuoka, JP;
KYULUX, INC., Fukuoka-Shi, Fukuoka, JP;
Abstract
A high light emission efficiency can be achieved by the use of a compound represented by the general formula (1) as a host material or a light-emitting material of a light-emitting layer of an organic light-emitting device. Xto Xeach independently represent C or BH constituting carborane, provided that among Xto X, the bonding positions to A and D each represent C, and the other thereof each represent BH; A represents an acceptor bonded to the carborane through an aromatic ring or a heteroaromatic ring; and D represents a donor bonded to the carborane through an aromatic ring or a heteroaromatic ring.