US 12,082,435 B2
Display device and method of manufacturing display device
Jaeseol Cho, Seoul (KR); and Chungi You, Asan-si (KR)
Assigned to Samsung Display Co., Ltd., Yongin-si (KR)
Filed by SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed on Jul. 31, 2023, as Appl. No. 18/362,935.
Application 18/362,935 is a continuation of application No. 17/315,137, filed on May 7, 2021, granted, now 11,716,869.
Claims priority of application No. 10-2020-0111591 (KR), filed on Sep. 2, 2020.
Prior Publication US 2023/0389351 A1, Nov. 30, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H10K 50/818 (2023.01); H10K 59/124 (2023.01); H10K 59/131 (2023.01); H10K 71/00 (2023.01); H10K 59/12 (2023.01); H10K 59/126 (2023.01); H10K 102/00 (2023.01)
CPC H10K 50/818 (2023.02) [H10K 59/124 (2023.02); H10K 59/131 (2023.02); H10K 71/00 (2023.02); H10K 71/621 (2023.02); H10K 59/1201 (2023.02); H10K 59/126 (2023.02); H10K 2102/3026 (2023.02)] 20 Claims
OG exemplary drawing
 
1. A display device comprising:
a substrate comprising a display area and a pad area;
a lower electrode in the display area on the substrate, the lower electrode comprising:
a first electrode, the first electrode comprising titanium (Ti) and being formed by a first etching process,
a second electrode on the first electrode, the second electrode comprising a first metal other than titanium (Ti) and being formed by a second etching process different from the first etching process, and
a third electrode on the second electrode, the third electrode comprising a second metal other than titanium (Ti) and being formed by the second etching process,
a light emitting layer over the first electrode;
an upper electrode on the light emitting layer; and
a pad electrode in the pad area on the substrate.