US 12,274,116 B2
Organic light-emitting display apparatus and method of manufacturing the same
Jaeik Kim, Yongin-si (KR); Jaesik Kim, Yongin-si (KR); Yeonhwa Lee, Yongin-si (KR); Joongu Lee, Yongin-si (KR); Sehoon Jeong, Yongin-si (KR); and Jiyoung Choung, Yongin-si (KR)
Assigned to Samsung Display Co., Ltd., Yongin-si (KR)
Filed by Samsung Display Co., Ltd., Yongin-si (KR)
Filed on Sep. 12, 2022, as Appl. No. 17/931,285.
Application 17/931,285 is a division of application No. 16/363,813, filed on Mar. 25, 2019, granted, now 11,476,436.
Claims priority of application No. 10-2018-0047314 (KR), filed on Apr. 24, 2018.
Prior Publication US 2023/0006163 A1, Jan. 5, 2023
Int. Cl. H10K 50/16 (2023.01); H10K 50/11 (2023.01); H10K 50/125 (2023.01); H10K 50/17 (2023.01); H10K 50/81 (2023.01); H10K 59/122 (2023.01); H10K 71/00 (2023.01); H10K 101/30 (2023.01); H10K 101/40 (2023.01); H10K 102/00 (2023.01)
CPC H10K 50/166 (2023.02) [H10K 50/11 (2023.02); H10K 50/125 (2023.02); H10K 50/171 (2023.02); H10K 50/81 (2023.02); H10K 59/122 (2023.02); H10K 71/00 (2023.02); H10K 2101/30 (2023.02); H10K 2101/40 (2023.02); H10K 2102/00 (2023.02)] 8 Claims
OG exemplary drawing
 
1. A method of manufacturing a display apparatus, the method comprising:
(a) forming a first pixel electrode configured to emit a first color of light, a second pixel electrode configured to emit a second color of light, and a third pixel electrode configured to emit a third color of light, wherein the first pixel electrode, the second pixel electrode, and the third pixel electrode are patterned on a substrate and apart from one another;
(b) forming a first lift-off layer comprising a fluoropolymer on the first to third pixel electrodes;
(c) forming a first photoresist on the first lift-off layer;
(d) sequentially forming a first opening and a second opening in the first photoresist and the first lift-off layer to expose the first pixel electrode, wherein the first photoresist and the first lift-off layer are formed at positions corresponding to the first pixel electrode;
(e) sequentially forming a first hole control layer, a first emission layer, and a first buffer layer, on the first pixel electrode, through the first opening and the second opening;
(f) removing the first lift-off layer and the first photoresist;
sequentially repeating operations (b) to (f) with respect to the second pixel electrode; and
sequentially repeating operations (b) to (f) with respect to the third pixel electrode,
wherein end portions of the first hole control layer, the first emission layer, and the first buffer layer are aligned with one another and form a surface parallel to a thickness direction of the first pixel electrode.