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:
Jun. 05, 2018
Filed:
Jul. 16, 2014
AZ Electronic Materials (Luxembourg) S.a.r.l., Somerville, NJ (US);
Ralph Grottenmüller, Wiesbaden, DE;
Rosalin Karunanandan, Frankfurt am Main, DE;
Fumio Kita, Wiesbaden, DE;
Helmut Lenz, Eschborn, DE;
Dieter Wagner, Wiesbaden, DE;
AZ Electronic Materials (Luxembourg) S.A.R.L., Luxembourg, LU;
Abstract
The invention relates to the use of specific organopolysilazanes as an encapsulation material for light emitting diodes (LED). The organopolysilazane polymers act as insulating filling materials and are stable over temperature and over exposure to ambient UV radiation. The encapsulating material has good thermal stability against discoloration to yellow by aging even at high temperatures which is a key factor for the long lifetime of an LED encapsulant and the LED performance.