US 12,148,861 B2
Display device and method of fabricating the same
Jin Woo Choi, Seoul (KR); Sung Kook Park, Suwon-si (KR); Sung Eun Baek, Suwon-si (KR); Byung Choon Yang, Seoul (KR); and So Yeon Yoon, Uijeongbu-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed by Samsung Display Co., LTD., Yongin-si (KR)
Filed on Apr. 12, 2022, as Appl. No. 17/718,869.
Claims priority of application No. 10-2021-0106378 (KR), filed on Aug. 12, 2021.
Prior Publication US 2023/0048544 A1, Feb. 16, 2023
Int. Cl. H01L 33/38 (2010.01); H01L 27/15 (2006.01); H01L 33/00 (2010.01); H01L 33/42 (2010.01); H01L 33/62 (2010.01)
CPC H01L 33/382 (2013.01) [H01L 27/156 (2013.01); H01L 33/005 (2013.01); H01L 33/42 (2013.01); H01L 33/62 (2013.01); H01L 2933/0016 (2013.01); H01L 2933/0066 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A display device comprising:
a pixel electrode disposed on a substrate and comprising:
a reflective electrode layer; and
an upper electrode layer;
a contact electrode disposed on the pixel electrode;
light-emitting elements disposed on the contact electrode and disposed perpendicular to the pixel electrode;
a planarization layer disposed on the pixel electrode, planarization layer filling a space between the light-emitting elements; and
a common electrode disposed on the planarization layer and the light-emitting elements, wherein
a size of the contact electrode is equal to a size of each of the light-emitting elements in a plan view, and
the upper electrode layer is disposed on the reflective electrode layer and is in a polycrystalline phase.