US 12,133,402 B2
Organic light-emitting device
Dongkyu Seo, Yongin-si (KR); Dongchan Kim, Yongin-si (KR); Wonjong Kim, Yongin-si (KR); Eungdo Kim, Yongin-si (KR); Jihye Lee, Yongin-si (KR); Dahea Im, Yongin-si (KR); Sanghoon Yim, Yongin-si (KR); Yoonhyeung Cho, Yongin-si (KR); and Wonsuk Han, Yongin-si (KR)
Assigned to Samsung Display Co., Ltd., Yongin-si (KR)
Filed by SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed on Jun. 23, 2023, as Appl. No. 18/340,664.
Application 16/852,171 is a division of application No. 16/417,426, filed on May 20, 2019, granted, now 10,665,810, issued on May 26, 2020.
Application 18/340,664 is a continuation of application No. 17/649,548, filed on Jan. 31, 2022, granted, now 11,737,299.
Application 17/649,548 is a continuation of application No. 16/852,171, filed on Apr. 17, 2020, granted, now 11,264,583, issued on Mar. 1, 2022.
Application 16/417,426 is a continuation of application No. 16/005,169, filed on Jun. 11, 2018, granted, now 10,305,059, issued on May 28, 2019.
Application 16/005,169 is a continuation of application No. 15/173,336, filed on Jun. 3, 2016, granted, now 9,997,733, issued on Jun. 12, 2018.
Claims priority of application No. 10-2015-0150266 (KR), filed on Oct. 28, 2015.
Prior Publication US 2023/0345754 A1, Oct. 26, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H10K 50/13 (2023.01); H10K 50/11 (2023.01); H10K 50/15 (2023.01); H10K 50/17 (2023.01); H10K 50/18 (2023.01); H10K 71/00 (2023.01); H10K 85/30 (2023.01); H10K 85/60 (2023.01); H10K 101/10 (2023.01); H10K 102/00 (2023.01)
CPC H10K 50/131 (2023.02) [H10K 50/11 (2023.02); H10K 50/15 (2023.02); H10K 50/17 (2023.02); H10K 50/18 (2023.02); H10K 71/00 (2023.02); H10K 85/30 (2023.02); H10K 85/324 (2023.02); H10K 85/341 (2023.02); H10K 85/342 (2023.02); H10K 85/346 (2023.02); H10K 85/348 (2023.02); H10K 85/381 (2023.02); H10K 85/60 (2023.02); H10K 85/615 (2023.02); H10K 85/622 (2023.02); H10K 85/623 (2023.02); H10K 85/624 (2023.02); H10K 85/626 (2023.02); H10K 85/631 (2023.02); H10K 85/633 (2023.02); H10K 85/636 (2023.02); H10K 85/653 (2023.02); H10K 85/654 (2023.02); H10K 85/657 (2023.02); H10K 85/6572 (2023.02); H10K 85/6574 (2023.02); H10K 85/6576 (2023.02); H10K 2101/10 (2023.02); H10K 2102/00 (2023.02)] 19 Claims
OG exemplary drawing
 
1. An organic light-emitting device comprising:
a first electrode;
a second electrode facing the first electrode;
a first emission unit and a second emission unit, a first emission unit and a second emission units being between the first electrode and the second electrode; a first charge generation layer between the first emission unit and the second emission unit;
wherein the first emission unit comprises a first emission layer, a first hole transport layer and a first inorganic buffer layer, and the first hole transport layer is between the first emission layer and the first electrode, and
the second emission unit comprises a second emission layer, a second hole transport layer and a second inorganic buffer layer, and the second hole transport layer is between the second emission layer and the first charge generation layer, and wherein,
i) the first inorganic buffer layer is between the first emission layer and the first hole transport layer, or
ii) the second inorganic buffer layer is between the second emission layer and the second hole transport layer.