US 12,243,961 B2
Light-emitting element, light-emitting element unit including the light-emitting element, and display device
Hye Lim Kang, Hwaseong-si (KR); Moon Jung An, Hwaseong-si (KR); Je Won Yoo, Bucheon-si (KR); and Dong Eon Lee, Hwaseong-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed by Samsung Display Co., LTD., Yongin-si (KR)
Filed on Sep. 16, 2021, as Appl. No. 17/476,927.
Claims priority of application No. 10-2021-0011244 (KR), filed on Jan. 27, 2021.
Prior Publication US 2022/0238756 A1, Jul. 28, 2022
Int. Cl. H01L 33/10 (2010.01); H01L 27/15 (2006.01); H01L 33/38 (2010.01)
CPC H01L 33/10 (2013.01) [H01L 27/156 (2013.01); H01L 33/38 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A light-emitting element comprising:
a light-emitting element core extending in a first direction, the light-emitting element core including:
a first semiconductor layer;
a second semiconductor layer disposed on the first semiconductor layer along the first direction; and
a device active layer disposed between the first semiconductor layer and the second semiconductor layer along the first direction;
a device insulating film surrounding a lateral surface of the light-emitting element core; and
a reflective film disposed on an outer lateral surface of the device insulating film and surrounding at least a lateral surface of the device active layer, wherein
the device insulating film includes an inner lateral surface facing the lateral surface of the light-emitting element core along a second direction perpendicular to the first direction and the outer lateral surface opposite to the inner lateral surface along the second direction, and
the reflective film exposes a part of the outer lateral surface of the device insulating film.