US 12,224,307 B2
Display device and manufacturing method thereof
Xinxing Li, Yongin-si (KR); Tae Jin Kong, Yongin-si (KR); Dae Hyun Kim, Yongin-si (KR); Veidhes Basrur, Yongin-si (KR); and Hyun Min Cho, Yongin-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Appl. No. 17/605,781
Filed by SAMSUNG DISPLAY Co., LTD., Yongin-si (KR)
PCT Filed Jan. 16, 2020, PCT No. PCT/KR2020/000814
§ 371(c)(1), (2) Date Oct. 22, 2021,
PCT Pub. No. WO2020/218713, PCT Pub. Date Oct. 29, 2020.
Claims priority of application No. 10-2019-0047876 (KR), filed on Apr. 24, 2019.
Prior Publication US 2022/0231080 A1, Jul. 21, 2022
Int. Cl. H01L 33/38 (2010.01); H01L 27/15 (2006.01); H01L 33/00 (2010.01); H01L 33/24 (2010.01); H01L 33/44 (2010.01)
CPC H01L 27/156 (2013.01) [H01L 33/005 (2013.01); H01L 33/24 (2013.01); H01L 33/38 (2013.01); H01L 33/44 (2013.01); H01L 2933/0016 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A display device comprising:
a pixel disposed in a display area, the pixel comprising:
a first electrode;
a first insulating layer disposed on the first electrode, and including openings, each of the openings exposing different areas of the first electrode and defining respective cells;
light emitting elements disposed in the respective cells, each of the light emitting elements including:
a first end portion electrically connected to the first electrode;
a second end portion protruding upward from the first insulating layer; and
a side surface connecting the first end portion and the second end portion and including an upper side surface and a lower side surface;
a second electrode disposed on the light emitting elements, and electrically connected to the second end portion of each of the light emitting elements; and
first contact electrodes disposed in the openings, each of the first contact electrodes disposed in a corresponding one of the openings including:
a lower part contacting the first electrode,
a first protruding part covering a first lateral surface of each of the openings,
a second protruding part covering a second lateral surface of each of the openings opposite to the first lateral surface of each of the openings, and
a third protruding part contacting the upper side surface and the first end portion of each of the light emitting elements, wherein
the third protruding part is disposed between the first protruding part and the second protruding part in a horizontal direction.