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:
Jun. 13, 2006
Filed:
Oct. 24, 2002
Masaru Kinoshita, Kawasaki, JP;
Wataru Sotoyama, Kawasaki, JP;
Jun Kodama, Kawasaki, JP;
Yasuo Okamoto, Kawasaki, JP;
Masaru Kinoshita, Kawasaki, JP;
Wataru Sotoyama, Kawasaki, JP;
Jun Kodama, Kawasaki, JP;
Yasuo Okamoto, Kawasaki, JP;
Fuji Photo Film., Ltd., Kanagawa, JP;
Abstract
An organic EL element comprising an organic thin film layer containing a light-emitting layer between an positive electrode and a negative electrode, in which a layer in the organic thin film layer comprises 1,3,6,8-tetraphenylpyrene compound expressed by the following structural formula (1), and a carbazole derivative expressed by the following structural formula (2), in the structural formula (1), R–Rmay be identical or different, and may be a hydrogen atom or a substituent group,