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:
May. 13, 2014
Filed:
Sep. 11, 2009
Ana C. DE Carvalho Esteves, Eindhoven, NL;
Roel Copic, Eindhoven, NL;
Gijsbertus DE with, Valkenswaard, NL;
Chrysostomus H. M. Maree, Geldrop, NL;
Niels Van Der Veen, Geldrop, NL;
Josephina C. M. Brokken-zijp, Liempde, NL;
Jozua Laven, Best, NL;
Ana C. De Carvalho Esteves, Eindhoven, NL;
Roel Copic, Eindhoven, NL;
Gijsbertus De With, Valkenswaard, NL;
Chrysostomus H. M. Maree, Geldrop, NL;
Niels Van Der Veen, Geldrop, NL;
Josephina C. M. Brokken-Zijp, Liempde, NL;
Jozua Laven, Best, NL;
Koninklijke Philips N.V., Eindhoven, NL;
Abstract
A wavelength converting element (), typically for a LED (), is provided, comprising luminescent particles () dispersed in a matrix () comprising crosslinked polysiloxane. Crosslinked polysiloxanes are temperature stable, typically up to temperatures above 300° C., meaning that they are stable under normal operating conditions of light emitting diodes. Further, crosslinked polysiloxanes are stable towards exposure to light, meaning that they will not degrade/discolor as a consequence of high intensity light exposure. The polymeric wavelength converter can easily be shaped in different forms. This may lead to better outcoupling of the light from a LED-converter system.