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. 10, 2013
Filed:
Jul. 12, 2011
Yusong Wu, Changshu, CN;
Dejie Tao, Fremont, CA (US);
Shifan Cheng, Dublin, CA (US);
Yi-qun LI, Danville, CA (US);
Yusong Wu, Changshu, CN;
Dejie Tao, Fremont, CA (US);
Shifan Cheng, Dublin, CA (US);
Yi-Qun Li, Danville, CA (US);
Intematix Corporation, Fremont, CA (US);
Abstract
Disclosed herein are green-emitting, garnet-based phosphors having the formula (LuYTbA)(AlB)(OC):Ce,Eu, where A is selected from the group consisting of Mg, Sr, Ca, and Ba; B is selected from the group consisting of Ga and In; C is selected from the group consisting of F, Cl, and Br; and 0≦a≦1; 0≦b≦1; 0<c≦0.5; 0≦d≦1; and 0<e≦0.2. These phosphors are distinguished from anything in the art by nature of their inclusion of both an alkaline earth and a halogen. Their peak emission wavelength may lie between about 500 nm and 540 nm; in one embodiment, the phosphor (Lu,Y,A)Al(O,F,Cl):Euhas an emission at 540 nm. The FWHM of the emission peak lies between 80 nm and 150 nm. The present green garnet phosphors may be combined with a red-emitting, nitride-based phosphor such as CaAlSiNto produce white light.