US 12,104,755 B2
Patterned reflective grids for LED arrays and displays
Isaac Wildeson, San Jose, CA (US); Hossein Lotfi, Fremont, CA (US); Toni Lopez, Vaals (NL); and Oleg Borisovich Shchekin, San Francisco, CA (US)
Assigned to Lumileds LLC, San Jose, CA (US)
Filed by Lumileds LLC, San Jose, CA (US)
Filed on Mar. 30, 2021, as Appl. No. 17/217,922.
Prior Publication US 2022/0316663 A1, Oct. 6, 2022
Int. Cl. F21K 9/68 (2016.01); F21K 9/90 (2016.01); H01L 25/075 (2006.01); H01L 33/00 (2010.01); H01L 33/50 (2010.01); H01L 33/60 (2010.01); G06F 1/16 (2006.01)
CPC F21K 9/68 (2016.08) [F21K 9/90 (2013.01); H01L 25/0753 (2013.01); H01L 33/0095 (2013.01); H01L 33/50 (2013.01); H01L 33/60 (2013.01); G06F 1/1686 (2013.01); H01L 2933/0041 (2013.01); H01L 2933/0058 (2013.01); H01L 2933/0091 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A light emitting diode array comprising:
a plurality of light emitting diodes each comprising a light emitting surface and a bottom diode surface opposite the light emitting surface, the light emitting surface comprising a pattern with features that comprise doped semiconductor material; and
a reflective grid defining a plurality of openings in which corresponding ones of the light emitting diodes are disposed with their light emitting surfaces facing in a same direction out of the reflective grid, the reflective grid providing reflective side walls for each light emitting diode, the reflective side walls comprising patterned light scattering surfaces arranged adjacent to the light emitting surfaces and facing in the same direction as the light emitting surfaces.