US 11,751,413 B2
Display device and method for manufacturing the same
Yeonhwa Lee, Hwaseong-si (KR); Jaesik Kim, Hwaseong-si (KR); Jaeik Kim, Seoul (KR); Joongu Lee, Seoul (KR); Sehoon Jeong, Suwon-si (KR); and Jiyoung Choung, Hwaseong-si (KR)
Assigned to Samsung Display Co., Ltd., Yongin-si (KR)
Filed by SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed on Mar. 21, 2022, as Appl. No. 17/700,026.
Application 17/700,026 is a division of application No. 16/696,258, filed on Nov. 26, 2019, granted, now 11,283,041.
Claims priority of application No. 10-2019-0010691 (KR), filed on Jan. 28, 2019.
Prior Publication US 2022/0209164 A1, Jun. 30, 2022
Int. Cl. H01L 51/52 (2006.01); H01L 27/32 (2006.01); H10K 50/805 (2023.01); H10K 50/844 (2023.01); H10K 59/122 (2023.01); H10K 102/10 (2023.01)
CPC H10K 50/805 (2023.02) [H10K 50/8445 (2023.02); H10K 59/122 (2023.02); H10K 2102/101 (2023.02)] 10 Claims
OG exemplary drawing
 
1. A method for manufacturing a display device, the method comprising:
providing a preliminary display device comprising a circuit element layer on which a transistor is formed, a first electrode connected to the transistor, a pixel defining layer in which an opening exposing the first electrode is formed, and an auxiliary electrode covering a portion of the pixel defining layer;
forming a lift-off layer covering the preliminary display device;
forming a photoresist layer covering the lift-off layer;
removing areas of the lift-off layer and the photoresist layer, which overlap the opening, to form an under cut;
forming an organic pattern overlapping the opening, a second electrode covering the organic pattern and connected to the auxiliary electrode, a first protection pattern covering the second electrode, and a second protection pattern covering the first protection pattern; and
removing the lift-off layer and the photoresist layer,
wherein the first protection pattern and the second protection pattern have stress in directions different from each other.