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:
Aug. 09, 2016
Filed:
Oct. 22, 2010
Applicants:
Yi-qun LI, Danville, CA (US);
Yi Dong, Tracy, CA (US);
Assignee:
Intematix Corporation, Fremont, CA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 63/04 (2006.01); C09K 11/77 (2006.01); C09K 11/88 (2006.01); H01L 33/50 (2010.01);
U.S. Cl.
CPC ...
C09K 11/7734 (2013.01); C09K 11/7731 (2013.01); C09K 11/7774 (2013.01); C09K 11/883 (2013.01); H01L 33/504 (2013.01);
Abstract
Disclosed herein are 'smart' phosphor compositions capable of regulating the chromaticity of their emission to substantially constant values even with variations in the excitation radiation they receive to induce photoluminescence. One phosphor of the smart composition demonstrates an increase in emission intensity increases as the wavelength of the excitation radiation is increased. The other phosphor shows a decrease in emission intensity with increasing excitation wavelength. Constant chromaticity in this context is defined as a change in CIE x or y coordinate of less than about five percent over a 10 nm range of excitation wavelengths.