07858408 is referenced by 180 patents and cites 34 patents.

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.

Title
LED with phosphor tile and overmolded phosphor in lens
Application Number
11/679143
Publication Number
7858408 (B2)
Application Date
February 26, 2007
Publication Date
December 28, 2010
Inventor
Stefan Eberle
Mountain View
CA, US
Tze Sen Lim
Bayan Lepas
MY
Paul S Martin
Pleasanton
CA, US
Robert Scott West
Morgan Hill
CA, US
Grigoriy Basin
San Francisco
CA, US
Regina Mueller Mach
San Jose
CA, US
Gerd O Mueller
San Jose
CA, US
Assignee
Philips Lumilends Lighting Company
CA, US
Koninklijke Philips Electronics
NL
IPC
H01L 21/56
H01L 33/50
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