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:
Jul. 13, 2010
Filed:
May. 15, 2007
Ning Wang, Martinez, CA (US);
Yi Dong, Tracy, CA (US);
Shifan Cheng, Dublin, CA (US);
Yi-qun LI, Danville, CA (US);
Ravilisetty Padmanabha Rao, Cupertino, CA (US);
Ning Wang, Martinez, CA (US);
Yi Dong, Tracy, CA (US);
Shifan Cheng, Dublin, CA (US);
Yi-Qun Li, Danville, CA (US);
Ravilisetty Padmanabha Rao, Cupertino, CA (US);
Intematix Corporation, Fremont, CA (US);
Abstract
Novel aluminate-based green phosphors are disclosed having the formula MEuMgMnAlO; where 0.1<x<1.0; 0.1<y<1.0; 0.2<x+y<2.0; and 2≦z≦14; wherein M is selected from the group consisting of Ba, Sr, Ca, and Zn; and wherein the phosphor is configured to absorb UV and visible radiation having a wavelength ranging from about 220 to 440 nm, and emit visible green light having a wavelength ranging from about 500 to 550 nm. A novel feature of the present aluminate-based green phosphors is the relatively narrow range of wavelength over which they can be configured to emit; in one embodiment, this range is from about 518 nm to 520 nm. In an alternative embodiment, the phosphor emits visible light with a peak wavelength having a full width at half maximum of less than or equal to about 40 nm in some embodiments, and 80 nm in other embodiments.