US 11,894,470 B2
Optical sensor and display device including the optical sensor
Ki June Lee, Yongin-si (KR); Jung Ha Son, Yongin-si (KR); Tae Sung Kim, Yongin-si (KR); Jae Ik Lim, Yongin-si (KR); and Hyun Min Cho, Yongin-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed by SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed on Aug. 12, 2020, as Appl. No. 16/991,853.
Claims priority of application No. 10-2019-0159180 (KR), filed on Dec. 3, 2019.
Prior Publication US 2021/0167229 A1, Jun. 3, 2021
Int. Cl. H01L 27/146 (2006.01); H01L 31/0216 (2014.01); H01L 27/144 (2006.01)
CPC H01L 31/02161 (2013.01) [H01L 27/1443 (2013.01); H01L 27/14678 (2013.01); H01L 27/14612 (2013.01); H01L 27/14623 (2013.01); H01L 27/14625 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An optical sensor, comprising:
a substrate;
a photoelectric element disposed on the substrate, wherein the photoelectric element includes a first electrode, an intermediate layer disposed on the first electrode, and a second electrode disposed on the intermediate layer;
a barrier layer disposed on the second electrode;
an insulating layer that covers the photoelectric element and the barrier layer,
a bias electrode disposed on the insulating layer and electrically connected to the second electrode; and
an organic planarization layer disposed directly on and above the bias electrode and on and above the insulating layer, and that has a flat upper surface,
wherein the barrier layer is spaced apart from the first electrode.