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:
Jan. 11, 2011
Filed:
Sep. 26, 2003
Hiroshi Yamamoto, Chiba, JP;
Masahide Matsuura, Chiba, JP;
Hidetsugu Ikeda, Chiba, JP;
Mineyuki Kubota, Chiba, JP;
Masahiro Kawamura, Chiba, JP;
Hiroshi Yamamoto, Chiba, JP;
Masahide Matsuura, Chiba, JP;
Hidetsugu Ikeda, Chiba, JP;
Mineyuki Kubota, Chiba, JP;
Masahiro Kawamura, Chiba, JP;
Idemitsu Kosan Co., Ltd., Tokyo, JP;
Abstract
A specific derivative of heterocyclic compound having nitrogen atom and an organic electroluminescence device comprising the compound. An organic electroluminescence device comprising at least one of organic compound layers including a light emitting layer sandwiched between an anode and a cathode, wherein said at least one of the organic compound layers comprises the derivative of the heterocyclic compound having nitrogen atom as a sole component or as mixed component. The organic electroluminescence device achieves elevation of luminance and excellent efficiency of light emission, and also achieves long lifetime by an improvement of an electrode adhesion.