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. 06, 2011
Filed:
Dec. 27, 2007
Choong Youl Kim, Gwangju, KR;
Sung Min Kong, Gwangju, KR;
Hee Seok Choi, Gwangju, KR;
Seung Hyok Park, Daejeon, KR;
Ho Shin Yoon, Gwangju, KR;
Chang Hee Lee, Daejeon, KR;
Choong Youl Kim, Gwangju, KR;
Sung Min Kong, Gwangju, KR;
Hee Seok Choi, Gwangju, KR;
Seung Hyok Park, Daejeon, KR;
Ho Shin Yoon, Gwangju, KR;
Chang Hee Lee, Daejeon, KR;
LG Innotek Co., Ltd., Seoul, KR;
Force4 Corp., Gwangju, KR;
Abstract
Disclosed are a phosphor, a coating phosphor composition, a method for preparing the phosphor, and a light emitting device. A silicate-based phosphor is expressed in a chemical formula of (4-x-y-z)SrO.xBaO.zCaO.aMgO.2(SiO).bMO:yEu, wherein M is at least one of Y, Ce, La, Nd, Gd, Tb, Yb or Lu, in which 0<x≦3.95, 0<y≦1, 0≦z<3.95, x+y+z<4, 0<a<2, and 0<b<1.