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:
Aug. 16, 2011
Filed:
Mar. 10, 2006
Kyung Nam Kim, Seoul, KR;
Sang MI Park, Seoul, KR;
Tomizo Matsuoka, Seoul, KR;
Seoul Semiconductor Co., Ltd., Seoul, KR;
Abstract
The present invention relates to a thiogallate phosphor which is excited by ultraviolet or blue light to emit light with a relatively longer wavelength than that of the ultraviolet or blue light. The phosphor is expressed as a general formula of (AEuM)(BM)S, wherein 0.005<x<0.9, 0<y<0.995 and x+y<1. Here, A is at least one element selected from the group consisting of Ba, Sr and Ca, B is at least one element selected from the group consisting of Al, Ga and In, Mis at least one rare earth element selected from the group consisting of Sc, La, Gd and Lu, and Mis at least one element consisting of Mg, Zn and Be. Accordingly, the luminous efficiency can be increased relative to the thiogallate phosphor with a general formula of ABS:Eu.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile