US 11,997,862 B2
Display device
JoonYoung Heo, Paju-si (KR); Daehee Kim, Paju-si (KR); JiYoung Park, Paju-si (KR); YoungHoon Son, Paju-si (KR); and Hyeju Choi, Paju-si (KR)
Assigned to LG DISPLAY CO., LTD., Seoul (KR)
Filed by LG Display Co., Ltd., Seoul (KR)
Filed on Dec. 23, 2019, as Appl. No. 16/725,529.
Claims priority of application No. 10-2018-0171212 (KR), filed on Dec. 27, 2018; and application No. 10-2019-0083106 (KR), filed on Jul. 10, 2019.
Prior Publication US 2020/0212336 A1, Jul. 2, 2020
Int. Cl. H10K 50/15 (2023.01); G02B 27/01 (2006.01); H10K 50/11 (2023.01); H10K 50/16 (2023.01); H10K 50/17 (2023.01); H10K 50/858 (2023.01); H10K 59/122 (2023.01); H10K 101/40 (2023.01)
CPC H10K 50/15 (2023.02) [H10K 50/11 (2023.02); H10K 50/16 (2023.02); H10K 50/17 (2023.02); H10K 50/858 (2023.02); H10K 59/122 (2023.02); G02B 27/017 (2013.01); G02B 2027/0178 (2013.01); H10K 2101/40 (2023.02)] 20 Claims
OG exemplary drawing
 
1. A display device comprising:
a substrate provided with a first subpixel and a second subpixel adjacent to the first subpixel;
a first electrode provided on the substrate, including a first sub electrode provided on the first subpixel and a second sub electrode provided on the second subpixel;
an organic light emitting layer including a first organic light emitting layer arranged on the first sub electrode and a second organic light emitting layer arranged on the second sub electrode;
a second electrode arranged on the organic light emitting layer; and
a first bank provided between the first sub electrode and the second sub electrode and partitioning the first subpixel from the second subpixel,
wherein the first organic light emitting layer includes a first light emitting layer and a first hole transporting layer arranged on the first light emitting layer,
wherein the first hole transporting layer includes a first sub hole transporting layer and a second sub hole transporting layer,
wherein the first sub hole transporting layer covers the first light emitting layer and the second sub hole transporting layer covers the first sub hole transporting layer,
wherein the second organic light emitting layer includes a second light emitting layer and a second hole transporting layer arranged on the second light emitting layer,
wherein the second hole transporting layer includes a third sub hole transporting layer, and
wherein the second sub hole transporting layer is a continuous layer covering both the first sub hole transporting layer and the third sub hole transporting layer.