US 10,892,297 B2
Light emitting diode (LED) stack for a display
Jong Hyeon Chae, Ansan-si (KR); Chung Hoon Lee, Ansan-si (KR); Seong Gyu Jang, Ansan-si (KR); Chang Yeon Kim, Ansan-si (KR); and Ho Joon Lee, Ansan-si (KR)
Assigned to Seoul Viosys Co., Ltd., Ansan-si (KR)
Filed by SEOUL VIOSYS CO., LTD., Ansan-si (KR)
Filed on Nov. 22, 2018, as Appl. No. 16/198,796.
Claims priority of provisional application 62/590,810, filed on Nov. 27, 2017.
Claims priority of provisional application 62/590,854, filed on Nov. 27, 2017.
Claims priority of provisional application 62/590,870, filed on Nov. 27, 2017.
Claims priority of provisional application 62/621,503, filed on Jan. 24, 2018.
Claims priority of provisional application 62/635,284, filed on Feb. 26, 2018.
Prior Publication US 2019/0165038 A1, May 30, 2019
Int. Cl. H01L 27/15 (2006.01); H01L 27/32 (2006.01); H01L 25/07 (2006.01); H01L 33/10 (2010.01); H01L 33/30 (2010.01); H01L 33/40 (2010.01); H01L 33/50 (2010.01); H01L 25/075 (2006.01); H01L 33/00 (2010.01); H01L 33/08 (2010.01); H01L 33/38 (2010.01)
CPC H01L 27/156 (2013.01) [H01L 25/0756 (2013.01); H01L 33/10 (2013.01); H01L 33/30 (2013.01); H01L 33/405 (2013.01); H01L 33/504 (2013.01); H01L 27/3209 (2013.01); H01L 33/0093 (2020.05); H01L 33/08 (2013.01); H01L 33/385 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A light emitting diode (LED) stack for a display, comprising:
a first LED sub-unit having a first surface and a second surface;
a second LED sub-unit disposed on the first surface of the first LED sub-unit;
a third LED sub-unit disposed on the second LED sub-unit;
a reflective electrode disposed on the second surface of the first LED sub-unit and forming ohmic contact with the first LED sub-unit; and
an ohmic electrode interposed between the first LED sub-unit and the second LED sub-unit and forming ohmic contact with the first LED sub-unit,
wherein:
the second LED sub-unit and the third LED sub-unit are configured to transmit light generated from the first LED sub-unit; and
the third LED sub-unit is configured to transmit light generated from the second LED sub-unit.