US 11,901,702 B2
LED DBR structure with reduced photodegradation
Ken Shimizu, Sunnyvale, CA (US); Hisashi Masui, San Jose, CA (US); and Ted Wangensteen, San Jose, CA (US)
Assigned to Lumileds LLC, San Jose, CA (US)
Filed by Lumileds LLC, San Jose, CA (US)
Filed on Jul. 31, 2020, as Appl. No. 16/945,101.
Application 16/945,101 is a continuation of application No. PCT/US2020/039962, filed on Jun. 26, 2020.
Application PCT/US2020/039962 is a continuation of application No. 16/455,051, filed on Jun. 27, 2019, granted, now 10,886,703.
Prior Publication US 2020/0412098 A1, Dec. 31, 2020
This patent is subject to a terminal disclaimer.
Int. Cl. H01S 5/22 (2006.01); H01S 5/183 (2006.01)
CPC H01S 5/222 (2013.01) [H01S 5/18341 (2013.01); H01S 5/18361 (2013.01); G02F 2201/346 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A light emitting diode (LED) device comprising:
a substrate;
a semiconductor diode structure on the substrate and comprising a first light output surface oppositely positioned from the substrate; and
a DBR structure on the substrate, the DBR structure comprising:
a high refractive index layer comprising titanium oxide (TiO2); and
a low refractive index layer having a high carbon region and at least one low carbon region that contacts the high refractive index layer.