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. 29, 2009
Filed:
Oct. 20, 2006
D. Scott Thompson, Woodbury, MN (US);
Catherine A. Leatherdale, Woodbury, MN (US);
Larry D. Boardman, Woodbury, MN (US);
Andrew J. Ouderkirk, Woodbury, MN (US);
Fedja Kecman, St. Louis, MN (US);
D. Scott Thompson, Woodbury, MN (US);
Catherine A. Leatherdale, Woodbury, MN (US);
Larry D. Boardman, Woodbury, MN (US);
Andrew J. Ouderkirk, Woodbury, MN (US);
Fedja Kecman, St. Louis, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
Disclosed herein is a method of making a light emitting device comprising an LED and a molded silicon-containing encapsulant. The method includes contacting the LED with a photopolymerizable composition containing a silicon-containing resin having silicon-bonded hydrogen and aliphatic unsaturation and two metal-containing catalysts. One catalyst may be activated by actinic radiation, and the second by heat but not the actinic radiation. Polymerization of the photopolymerizable composition to form the encapsulant may be carried out by selectively activating the different catalysts. At some point before polymerization is complete, a mold is used to impart a predetermined shape to the encapsulant.