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:
Oct. 18, 2011
Filed:
May. 21, 2008
Taiki Watanabe, Akishima, JP;
Kazunori Ueno, Glen Waverly, AU;
Koichi Suzuki, Yokohama, JP;
Yohei Iwasaki, Kawasaki, JP;
Taiki Watanabe, Akishima, JP;
Kazunori Ueno, Glen Waverly, AU;
Koichi Suzuki, Yokohama, JP;
Yohei Iwasaki, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An organic light emitting device having a high efficiency and durability is provided. The organic light emitting device includes an anode, a cathode and a layer formed of an organic compound interposed between the anode and the cathode, and contains at least one kind of the fluorene compound represented by the following general formula (I) or (II): wherein Rto Reach represent an alkyl group, a fluorinated alkyl group, a substituted or unsubstituted aralkyl group, or a substituted or unsubstituted aryl group; and Arto Arrepresent a substituted or unsubstituted aryl group or a substituted or unsubstituted polycondensed aromatic group.