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:
Jul. 08, 2008
Filed:
Nov. 08, 2006
Tetsuo Murayama, Kanagawa, JP;
Akiko Yabe, Kanagawa, JP;
Kanzi Shimizu, Kanagawa, JP;
Takayuki Shoda, Kanagawa, JP;
Masahiko Yoshino, Kanagawa, JP;
Tetsuo Murayama, Kanagawa, JP;
Akiko Yabe, Kanagawa, JP;
Kanzi Shimizu, Kanagawa, JP;
Takayuki Shoda, Kanagawa, JP;
Masahiko Yoshino, Kanagawa, JP;
Mitsubishi Chemical Corporation, Tokyo, JP;
Abstract
The present invention is to provide a light emitting device which can generate high-intensity light emission, using a fluorescent material containing a rare earth element ion complex and being excellent in durability and also provide the fluorescent material to be used therein. The present invention relates to a light emitting device comprising a semiconductor light emitting element which emits light within the region from near-ultraviolet light to visible light, and a fluorescent material which contains a rare earth element ion complex having an aromatic ring-containing Bronsted acid ion with a pKa value of 7 or less as a ligand and emits light by the action of light of the semiconductor light emitting element.