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:
Nov. 27, 2018
Filed:
Mar. 30, 2015
Sumitomo Chemical Company, Limited, Tokyo, JP;
Toshiaki Sasada, Tsukuba, JP;
Makoto Anryu, Osaka, JP;
Seiichirou Yokoya, Tokyo, JP;
Kohei Asada, Tsukuba, JP;
Sumitomo Chemical Company, Limited, Tokyo, JP;
Abstract
A composition is provided containing: a phosphorescent compound having an emission spectrum whose maximum peak wavelength is between 380 nm or more and less than 495 nm, having no dendron and represented by formula (1'); two or more phosphorescent compounds having an emission spectrum whose maximum peak wavelength is between 495 nm or more and less than 750 nm and having a dendron; and a compound represented by formula (H-1). In formula (1′) M represents an iridium atom or the like, nrepresents an integer of 1 or more, nrepresents an integer of 0 or more, Eand Erepresent a carbon atom or the like, the ring Rrepresents a diazole ring, the ring Rrepresents a 6-membered aromatic hydrocarbon ring or the like, and A-G-Arepresents an anionic bidentate ligand.