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:
Nov. 17, 2009
Filed:
Mar. 19, 2007
Applicants:
Kubota Shunichi, Yongin-si, KR;
Young-sic Kim, Yongin-si, KR;
Seoung-jae Im, Yongin-si, KR;
Inventors:
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 11/55 (2006.01); C09K 11/59 (2006.01); C09K 11/66 (2006.01);
U.S. Cl.
CPC ...
Abstract
Provided are an alkaline earth metal silicate-based phosphor which is a compound represented by Formula 1 below, and a white light-emitting device (LED) including the same.(M1AB)MgM2OZ  Formula 1 The alkaline earth metal silicate-based phosphor has a broad excitation wavelength range, and thus, both a UV-LED and a blue LED can be used as excitation sources for white LEDs. Furthermore, the total emission area of an emission spectrum of the alkaline earth metal silicate-based phosphor is greater than that of a common phosphor, thereby achieving better emission efficiency.