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:
Oct. 19, 2010
Filed:
Dec. 05, 2008
Applicants:
Soshchin Naum, Changhua, TW;
Wei-hung Lo, Taipei City, TW;
Chi-ruei Tsai, Taipei, TW;
Inventors:
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 33/50 (2010.01);
U.S. Cl.
CPC ...
Abstract
A silicate phosphor prepared from MgMeLnSiONF, in which Me=Ca, Sr, Ba, Ln=Sc, Lu, Er, Ho, excited by one single ion or an ion pair of d, f-elements such as Ak=Cu, Ce, Eu, Ag, Mn. The phosphor has a cubic garnet architecture prepared by solid phase synthesis, and radiates at green, green-yellow, yellow-orange spectrum regions. When mixed with (Y,Gd,Ce)AlOsubstrate-based phosphor, the compound mixture has warm white radiation and color temperature T<4000K with high luminous intensity and high luminescence efficiency. The invention also provides a warm white semiconductor using the silicate phosphor.