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:
Dec. 20, 2016
Filed:
Jan. 26, 2009
Weidong Zhuang, Beijing, CN;
Yunsheng HU, Beijing, CN;
Ying Fang, Beijing, CN;
Xiaowei Huang, Beijing, CN;
Huaqiang He, Beijing, CN;
Weidong Zhuang, Beijing, CN;
Yunsheng Hu, Beijing, CN;
Ying Fang, Beijing, CN;
Xiaowei Huang, Beijing, CN;
Huaqiang He, Beijing, CN;
GRIREM ADVANCED MATERIALS CO., LTD., Beijing, CN;
Abstract
A silicon-containing phosphor for LED and its preparation method, and the devices incorporating the same. The phosphor in the present invention can be represented as AO.aSiO.bAX:mEu,nR, wherein A is at least one metal element selected from a group consisting of Sr, Ba, Ca, Mg, and Zn; X is at least one halogen element selected from a group consisting of F, Cl, Br, and I; R is at least one element selected from a group consisting of Bi, Y, La, Ce, Pr, Gd, Tb, and Dy; 0.1<a<2, 0.005<b<0.08, 0.005<m<0.5, 0.005<n<0.5, and m+n<1. The phosphor has excellent luminescent performance and good stability, wide excitation band, and adjustable emission wavelength. White or color LED can be obtained by combining the phosphor of the present invention with UV, purple or blue light LED chip.