US 11,784,288 B2
Light-emitting diodes with integrated optical elements
Benjamin Leung, Sunnyvale, CA (US); Miao-Chan Tsai, Sunnyvale, CA (US); Sheila Hurtt, Palo Alto, CA (US); Gang He, Fremont, CA (US); and Richard Peter Schneider, Jr., Sunnyvale, CA (US)
Assigned to Google LLC, Mountain View, CA (US)
Filed by Google LLC, Mountain View, CA (US)
Filed on Oct. 23, 2019, as Appl. No. 16/661,361.
Claims priority of provisional application 62/751,375, filed on Oct. 26, 2018.
Prior Publication US 2020/0135977 A1, Apr. 30, 2020
Int. Cl. H01L 33/32 (2010.01); G02B 3/04 (2006.01); G02B 27/30 (2006.01); H01L 33/00 (2010.01); H01L 33/18 (2010.01); H01L 33/60 (2010.01)
CPC H01L 33/325 (2013.01) [G02B 3/04 (2013.01); G02B 27/30 (2013.01); H01L 33/0008 (2013.01); H01L 33/18 (2013.01); H01L 33/60 (2013.01)] 65 Claims
OG exemplary drawing
 
1. A light emitting device, comprising:
a light-emitting diode (LED) structure having an active region and made of a material including GaN, the active region having a p-side and an n-side;
an optical element disposed on the LED structure and made at least in part of a material including GaN, the optical element configured to collimate and steer a light emitted by the LED structure;
a sidewall material having a top surface, the optical element having a portion of a tapered sidewall above the top surface of the sidewall material; and
a reflective contact disposed opposite to the optical element and having a reflective sidewall and a reflective bottom, the sidewall material being disposed between the reflective sidewall and the optical element, the sidewall material terminating at a top surface of the reflective bottom.