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. 08, 2011
Filed:
Feb. 23, 2006
Kazunori Sugimoto, Otsu, JP;
Seiichiro Murase, Otsu, JP;
Daisuke Kitazawa, Otsu, JP;
Kazumasa Nagao, Otsu, JP;
Takafumi Ogawa, Otsu, JP;
Tsuyoshi Tominaga, Otsu, JP;
Kazunori Sugimoto, Otsu, JP;
Seiichiro Murase, Otsu, JP;
Daisuke Kitazawa, Otsu, JP;
Kazumasa Nagao, Otsu, JP;
Takafumi Ogawa, Otsu, JP;
Tsuyoshi Tominaga, Otsu, JP;
Toray Industries, Inc., Tokyo, JP;
Abstract
The present invention is a light-emitting device material characterized by containing a pyrene compound represented by the following general formula (1): wherein R15 is a specific functional group; andY1 to Y4 is selected from among a nitrogen atom and a carbon atom, provided that at least one of the Y1 to Y4 is a nitrogen atom and at least one thereof is a carbon atom, and no substituents exist on the nitrogen atom in the case of the nitrogen atom. This material provides a light-emitting device having high luminous efficiency and excellent durability.