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:
Dec. 28, 2010
Filed:
Feb. 26, 2007
Gerd O. Mueller, San Jose, CA (US);
Regina Mueller-mach, San Jose, CA (US);
Grigoriy Basin, San Francisco, CA (US);
Robert Scott West, Morgan Hill, CA (US);
Paul S. Martin, Pleasanton, CA (US);
Tze-sen Lim, Bayan Lepas, MY;
Stefan Eberle, Mountain View, CA (US);
Gerd O. Mueller, San Jose, CA (US);
Regina Mueller-Mach, San Jose, CA (US);
Grigoriy Basin, San Francisco, CA (US);
Robert Scott West, Morgan Hill, CA (US);
Paul S. Martin, Pleasanton, CA (US);
Tze-Sen Lim, Bayan Lepas, MY;
Stefan Eberle, Mountain View, CA (US);
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Philips Lumilends Lighting Company, LLC, San Jose, CA (US);
Abstract
Overmolded lenses and certain fabrication techniques are described for LED structures. In one embodiment, thin YAG phosphor plates are formed and affixed over blue LEDs mounted on a submount wafer. A clear lens is then molded over each LED structure during a single molding process. The LEDs are then separated from the wafer. The molded lens may include red phosphor to generate a warmer white light. In another embodiment, the phosphor plates are first temporarily mounted on a backplate, and a lens containing a red phosphor is molded over the phosphor plates. The plates with overmolded lenses are removed from the backplate and affixed to the top of an energizing LED. A clear lens is then molded over each LED structure. The shape of the molded phosphor-loaded lenses may be designed to improve the color vs. angle uniformity. Multiple dies may be encapsulated by a single lens. In another embodiment, a prefabricated collimating lens is glued to the flat top of an overmolded lens.