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:
Sep. 13, 2011
Filed:
Mar. 25, 2008
Maki Minamoto, Tokyo, JP;
Koutoku Ohmi, Tottori, JP;
Kazuaki Tsuji, Tottori, JP;
NEC Lighting, Ltd, Tokyo, JP;
Tottori University, Tottori, JP;
Abstract
A fluorescent substance capable of remarkably increasing the luminous intensity of a I-III-VIchalcopyrite type compound having a large band gap among chalcopyrite type compounds with manganese as luminescence centers, and being favorably used for a lighting device using a light emitting diode, a light emitting element of a display device or the like, a light emitting device such as fluorescent lamps such as a cold cathode fluorescent lamp and a hot cathode fluorescent lamp, as a fluorescent substance generating fluorescence by ultraviolet excitation, is provided. The fluorescent substance is expressed by composition formula (1)Cu(AlGa)(SSe):Mn,Si  (1)(wherein x represents a number satisfying 0≦x≦0.4, and y represents a number satisfying 0≦y≦0.4), including manganese as a luminescence center atom.