US 11,705,542 B2
Binder materials for light-emitting devices
Walter Weare, Pittsboro, NC (US); Derek Miller, Raleigh, NC (US); Brian T. Collins, Holly Springs, NC (US); and Colin Blakely, Raleigh, NC (US)
Assigned to CreeLED, Inc., Durham, NC (US)
Filed by CreeLED, Inc., Durham, NC (US)
Filed on Aug. 25, 2020, as Appl. No. 17/2,320.
Prior Publication US 2022/0069172 A1, Mar. 3, 2022
Int. Cl. H01L 33/50 (2010.01); H01L 33/58 (2010.01)
CPC H01L 33/501 (2013.01) [H01L 33/505 (2013.01); H01L 33/58 (2013.01); H01L 33/504 (2013.01); H01L 33/508 (2013.01); H01L 2933/0041 (2013.01); H01L 2933/0091 (2013.01)] 28 Claims
OG exemplary drawing
 
1. A light-emitting device comprising:
a light-emitting diode (LED) chip; and
a lumiphoric material arranged to receive light emitted by the LED chip, the lumiphoric material comprising a plurality of lumiphoric particles in a binder, the lumiphoric material comprising a density of at least 1.8 grams per centimeter cubed (g/cm3) and a weight percentage of lumiphoric particles that is at least 70%;
wherein the lumiphoric material comprises a first face and a second face that opposes the first face, wherein the plurality of lumiphoric particles are provided in a settled arrangement within the binder such that a highest concentration of the lumiphoric particles is in a region of the binder that is adjacent the second face.