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. 19, 2017
Filed:
Mar. 12, 2013
Applicant:
Nitto Denko Corporation, Osaka, JP;
Inventors:
Jiadong Zhou, San Diego, CA (US);
Guang Pan, Carlsbad, CA (US);
Hironaka Fujii, Carlsbad, CA (US);
Bin Zhang, San Diego, CA (US);
Assignee:
Nitto Denko Corporation, Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
C09K 11/81 (2006.01); C09K 11/61 (2006.01); C09K 11/57 (2006.01); H01L 33/50 (2010.01); C04B 111/80 (2006.01);
U.S. Cl.
CPC ...
C09K 11/616 (2013.01); C09K 11/576 (2013.01); H01L 33/502 (2013.01); C04B 2111/807 (2013.01); C04B 2235/65 (2013.01); C04B 2235/66 (2013.01);
Abstract
Some phosphor powders can be difficult to form into ceramic compacts because they are difficult to sinter. As described herein, phosphor powders that can degrade under conventional sintering temperatures can be sintered by heating the powder at a lower temperature, such as less than 800° C., while the powder is under greater than atmospheric pressure, such as at least 0.05 GPa. Phosphor ceramic compacts prepared by this method, and light-emitting devices incorporating these phosphor ceramic compacts, are also described.