US 7,321,161 B2
LED package assembly with datum reference feature
Fernando M. Teixeira, Santa Clara, Calif. (US); and Robert L. Steward, Sunnyvale, Calif. (US)
Assigned to Philips Lumileds Lighting Company, LLC, San Jose, Calif. (US)
Filed on Dec. 19, 2003, as Appl. No. 10/741,931.
Prior Publication US 2005/0135105 A1, Jun. 23, 2005
Int. Cl. H01L 23/495 (2006.01)
U.S. Cl. 257—675  [257/98; 257/99; 257/100; 257/625; 257/676; 257/706; 257/718; 257/720] 21 Claims
OG exemplary drawing
 
1. An assembly comprising:
an LED die;
a heat sink, the LED die being coupled to the heat sink so that the LED die has a known positional relationship to the heat sink;
an insulating body at least partially surrounding the heat sink; and
at least one datum reference feature external to the insulating body, the datum reference feature having a known fixed positional relationship to the heat sink such that the datum reference feature provides a reference for the position of the LED die, wherein the LED die has a known lateral positional relationship to the heat sink, and the datum reference feature has a known fixed lateral positional relationship to the heat sink such that the datum reference feature provides a reference for the lateral position of the LED die.