US 12,243,969 B2
Light emitting device structure and method for manufacturing same
Hyun Min Cho, Seoul (KR); Jung Hong Min, Pyeongtaek-si (KR); Dae Hyun Kim, Hwaseong-si (KR); and Dong Uk Kim, Hwaseong-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Appl. No. 17/291,398
Filed by Samsung Display Co., LTD., Yongin-si (KR)
PCT Filed May 27, 2019, PCT No. PCT/KR2019/006327
§ 371(c)(1), (2) Date May 5, 2021,
PCT Pub. No. WO2020/096150, PCT Pub. Date May 14, 2020.
Claims priority of application No. 10-2018-0135067 (KR), filed on Nov. 6, 2018.
Prior Publication US 2022/0005991 A1, Jan. 6, 2022
Int. Cl. H01L 33/62 (2010.01); H01L 27/15 (2006.01); H01L 33/00 (2010.01); H01L 33/16 (2010.01); H01L 33/38 (2010.01)
CPC H01L 33/62 (2013.01) [H01L 27/156 (2013.01); H01L 33/005 (2013.01); H01L 33/16 (2013.01); H01L 33/38 (2013.01); H01L 2933/0016 (2013.01); H01L 2933/0066 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A light-emitting element structure comprising:
at least one light-emitting element which is disposed on a substrate and extends in a direction perpendicular to the substrate;
an auxiliary layer which is disposed on the substrate, exposes at least a portion of an upper surface of the substrate, and surrounds an outer surface of the at least one light-emitting element;
a current spreading layer which is disposed on the auxiliary layer, surrounds an entire side surface and an upper surface of an end portion of the at least one light-emitting element, and electrically contacts the end portion of the at least one light-emitting element;
a first pad which is electrically connected to the end portion of the at least one light-emitting element, disposed on the current spreading layer, and does not overlap the at least one light-emitting element; and
a second pad which is electrically connected to another end portion of the at least one light-emitting element, disposed on the at least a portion of the upper surface of the substrate, and spaced apart from the auxiliary layer, wherein
the first pad entirely surrounds the at least one light-emitting element in plan view,
the second pad entirely surrounds the at least one light-emitting element in plan view, and
the second pad entirely surrounds an outer periphery of the auxiliary layer in plan view.