US 12,016,191 B2
Electronic device including a light-emitting element having functional layers with thickness profiles
Soohyun Park, Seoul (KR); Donghoon Kwak, Hwaseong-si (KR); and Seulgi Han, Suwon-si (KR)
Assigned to Samsung Display Co., Ltd., Yongin-si (KR)
Filed by SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed on Jun. 7, 2021, as Appl. No. 17/341,205.
Claims priority of application No. 10-2020-0116557 (KR), filed on Sep. 11, 2020.
Prior Publication US 2022/0085315 A1, Mar. 17, 2022
Int. Cl. H01L 51/50 (2006.01); H01L 27/32 (2006.01); H10K 50/11 (2023.01); H10K 50/15 (2023.01); H10K 50/17 (2023.01); H10K 59/122 (2023.01); H10K 59/35 (2023.01); H10K 101/40 (2023.01); H10K 102/00 (2023.01)
CPC H10K 50/15 (2023.02) [H10K 50/11 (2023.02); H10K 50/17 (2023.02); H10K 59/122 (2023.02); H10K 59/35 (2023.02); H10K 2101/40 (2023.02); H10K 2102/351 (2023.02)] 20 Claims
OG exemplary drawing
 
1. An electronic device comprising:
a base layer;
a first electrode on the base layer;
a pixel defining layer on the base layer and having an opening that exposes an upper surface of the first electrode;
a hole transport region in the opening and having a thickness gradually decreasing from a center of the opening toward a side surface of the pixel defining layer;
an emission layer directly on the hole transport region and having a thickness gradually increasing from the center of the opening toward the side surface of the pixel defining layer;
an electron transport region on the emission layer; and
a second electrode on the electron transport region,
wherein the emission layer comprises a host and a dopant.