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:
Mar. 04, 2014
Filed:
Jun. 15, 2011
Tatsuya Igarashi, Kanagawa, JP;
Toshihiro Ise, Kanagawa, JP;
Yousuke Miyashita, Kanagawa, JP;
Hidetoshi Fujimura, Kanagawa, JP;
Hisashi Okada, Kanagawa, JP;
Masayuki Mishima, Kanagawa, JP;
Qiu Xuepeng, Kanagawa, JP;
Tatsuya Igarashi, Kanagawa, JP;
Toshihiro Ise, Kanagawa, JP;
Yousuke Miyashita, Kanagawa, JP;
Hidetoshi Fujimura, Kanagawa, JP;
Hisashi Okada, Kanagawa, JP;
Masayuki Mishima, Kanagawa, JP;
Qiu Xuepeng, Kanagawa, JP;
UDC Ireland Limited, Dublin, IE;
Abstract
A light-emitting element having excellent light-emitting properties and with which it is possible to emit blue light at a high luminance for a long period of time, and an iridium complex for realizing the same. The light-emitting element has an external quantum efficiency of at least 5% and a light emission maximum wavelength λ max of no more than 500 nm. Further, there is provided a light-emitting element including a light-emitting layer or a plurality of organic compound layers having the light-emitting layer, with at least one of the compound layers including at least one kind of a compound having a partial structure represented by the general formula K-0. In the general formula K-0, Rto Reach independently represents a hydrogen atom or a substituent, provided that if Ris a fluorine atom, Ris not a hydrogen atom.