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. 05, 2010
Filed:
Jun. 18, 2007
Akira Tsuboyama, Tokyo, JP;
Koichi Suzuki, Yokohama, JP;
Taiki Watanabe, Akishima, JP;
Kazunori Ueno, Ebina, JP;
Akira Tsuboyama, Tokyo, JP;
Koichi Suzuki, Yokohama, JP;
Taiki Watanabe, Akishima, JP;
Kazunori Ueno, Ebina, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
Provided is a light emitting material of which a light emitting device having high luminous efficiency and high stability and capable of being provided at a low cost can be formed. A light emitting material includes the following partial structural formula (1): wherein at least one of Rto Rrepresents a substituent except a hydrogen atom, a total number of benzene ring structures in Rto Ris 3 or more, and Rto Rinclude a trifluoromethyl group, or a linear, branched, or cyclic alkyl or alkoxyl group having 2 or more carbon atoms a hydrogen atom of which may be substituted by a halogen atom.