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:
Jan. 01, 2013
Filed:
Jun. 16, 2010
Won-bin Im, Goleta, CA (US);
Ram Seshadri, Goleta, CA (US);
Steven P. Denbaars, Goleta, CA (US);
The Regents of the University of California, Oakland, CA (US);
Abstract
A blue-green emitting Ce-activated oxyfluoride phosphor for use with a light emitting diode (LED) in solid state lighting applications. The blue-green emitting Ce-activated oxyfluoride phosphor is represented as:(SrAE)(AlT)OF:Cewherein 0<x≦0.3, 0≦y≦1, AE includes at least one element selected from alkaline earth metals on the periodic table, for example, Mg, Ca and Ba, 0≦z≦1, and T includes at least one atom selected from Al, B, Ga, and In. The blue-green emitting Ce-activated oxyfluoride phosphor may be combined with another phosphor to generate the white light. Specifically, the present invention provides for white light generation by combining the blue-green emitting Ce-activated oxyfluoride phosphor with either a near-ultraviolet (UV) LED and red emitting phosphor, or with a near-UV LED and a red-yellow phosphor.