US 12,082,446 B2
Display apparatus and method of manufacturing the same
Jaeik Kim, Yongin-si (KR); Jaesik Kim, Yongin-si (KR); Yeonhwa Lee, Yongin-si (KR); and Joongu Lee, Yongin-si (KR)
Assigned to Samsung Display Co., Ltd., Yongin-si (KR)
Filed by SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed on Oct. 3, 2022, as Appl. No. 17/937,720.
Application 17/937,720 is a division of application No. 16/815,938, filed on Mar. 11, 2020, granted, now 11,495,645.
Claims priority of application No. 10-2019-0076342 (KR), filed on Jun. 26, 2019.
Prior Publication US 2023/0029289 A1, Jan. 26, 2023
Int. Cl. H10K 59/122 (2023.01); H10K 50/844 (2023.01); H10K 59/121 (2023.01); H10K 71/00 (2023.01); H10K 102/00 (2023.01)
CPC H10K 59/122 (2023.02) [H10K 50/844 (2023.02); H10K 59/121 (2023.02); H10K 71/00 (2023.02); H10K 2102/00 (2023.02)] 8 Claims
OG exemplary drawing
 
1. A method of manufacturing a display apparatus, the method comprising:
preparing a substrate;
forming a pixel electrode on the substrate;
forming a pixel defining layer on the pixel electrode, the pixel defining layer having a first opening that exposes a center portion of the pixel electrode;
forming an auxiliary electrode on the pixel defining layer, the auxiliary electrode having a second opening that is larger than the first opening;
forming a lift-off layer on the auxiliary electrode and a mask layer on the lift-off layer, the lift-off layer having a third opening, and the mask layer having a fourth opening that is smaller than the third opening;
forming an intermediate layer on the pixel electrode through the fourth opening;
forming an opposite electrode on the intermediate layer through the fourth opening;
forming a first protective layer on the opposite electrode through the fourth opening;
forming a contact electrode on the first protective layer through the fourth opening, the contact electrode electrically contacting the auxiliary electrode and the opposite electrode;
forming a second protective layer on the contact electrode through the fourth opening; and
removing the lift-off layer and the mask layer,
wherein an end of the auxiliary electrode and an end of the opposite electrode are spaced from each other with the contact electrode therebetween.