US 12,284,879 B2
Display device having a tapered partition wall and method of manufacturing the same
Hyun Min Cho, Hwaseong-si (KR); Tae Wook Kang, Seongnam-si (KR); Tae Sung Kim, Incheon (KR); Dae Won Choi, Cheonan-si (KR); and Sang Gab Kim, Seoul (KR)
Assigned to Samsung Display Co., Ltd., Yongin-si (KR)
Filed by SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed on Nov. 11, 2022, as Appl. No. 18/054,814.
Application 18/054,814 is a continuation of application No. 16/838,956, filed on Apr. 2, 2020, granted, now 11,502,144.
Claims priority of application No. 10-2019-0093421 (KR), filed on Jul. 31, 2019.
Prior Publication US 2023/0076780 A1, Mar. 9, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H10K 59/122 (2023.01); H10K 50/824 (2023.01); H10K 59/12 (2023.01); H10K 59/124 (2023.01); H10K 59/126 (2023.01); H10K 59/38 (2023.01)
CPC H10K 59/122 (2023.02) [H10K 50/824 (2023.02); H10K 59/124 (2023.02); H10K 59/126 (2023.02); H10K 59/38 (2023.02); H10K 59/1201 (2023.02)] 15 Claims
OG exemplary drawing
 
1. A display device comprising:
a first base;
a pixel electrode on the first base;
a pixel defining layer having an opening that at least partially exposes the pixel electrode;
a light emitting layer on the pixel electrode;
a portion of a first electrode at a same layer as the pixel electrode;
a partition wall on the first electrode and at least partially exposing a side surface of the portion of the first electrode;
an organic layer on the partition wall; and
a common electrode on the light emitting layer and the organic layer,
wherein a side surface of the partition wall has a reverse-tapered shape,
wherein the common electrode directly contacts an entirety of a side surface of the first electrode and is formed to continuously cover sides of the partition wall from a top of the partition wall to a top of the first electrode,
wherein the first electrode and the pixel electrode comprise a same material, and
wherein the pixel defining layer and the partition wall are made of an inorganic material.