US 12,382,826 B2
Organic light emitting diode and organic light emitting device including the same
Ji-Cheol Shin, Paju-si (KR); Jeong-Dae Seo, Paju-si (KR); and Shin-Han Kim, Paju-si (KR)
Assigned to LG Display Co., Ltd., Seoul (KR)
Filed by LG DISPLAY CO., LTD., Seoul (KR)
Filed on Dec. 10, 2021, as Appl. No. 17/548,158.
Claims priority of application No. 10-2020-0179672 (KR), filed on Dec. 21, 2020.
Prior Publication US 2022/0199909 A1, Jun. 23, 2022
Int. Cl. H10K 50/19 (2023.01); H10K 85/60 (2023.01); H10K 50/11 (2023.01); H10K 50/13 (2023.01); H10K 50/15 (2023.01); H10K 101/30 (2023.01); H10K 101/40 (2023.01)
CPC H10K 85/626 (2023.02) [H10K 85/624 (2023.02); H10K 85/633 (2023.02); H10K 85/6572 (2023.02); H10K 50/11 (2023.02); H10K 50/13 (2023.02); H10K 50/15 (2023.02); H10K 2101/30 (2023.02); H10K 2101/40 (2023.02)] 18 Claims
 
1. An organic light emitting diode, comprising:
a first electrode;
a second electrode facing the first electrode;
a first emitting part positioned between the first and second electrodes and including a first emitting material layer, a hole injection layer between the first electrode and the first emitting material layer and a first hole transporting layer between the hole injection layer and the first emitting material layer;
a second emitting part including a second emitting material layer and a second hole transporting layer and positioned between the first emitting part and the second electrode, and
a first p-type charge generation layer including a first p-type charge generation material and positioned between the first and second emitting parts,
wherein the hole injection layer includes a hole injection material, and the hole injection material is an organic compound represented in Formula 1-1:

OG Complex Work Unit Chemistry
wherein each of R1 and R2 is independently selected from the group consisting of hydrogen (H), deuterium (D), halogen and cyano,
wherein each of R3 to R6 is independently selected from the group consisting of halogen, cyano, malononitrile, C1 to C10 haloalkyl group and C1 to C10 haloalkoxy group, and at least one of R3 and R4 and at least one of R5 and R6 are malononitrile,
wherein each of X and Y is independently phenyl substituted with at least one of C1 to C10 alkyl group, halogen, cyano, malononitrile, C1 to C10 haloalkyl group and C1 to C10 haloalkoxy group,
wherein the first hole transporting layer includes at least one of a first hole transporting material represented in Formula 2 and a second hole transporting material represented in Formula 3:

OG Complex Work Unit Chemistry
wherein in Formula 2, each of X1 and X2 is independently selected from the group consisting of C6 to C30 aryl group and C5 to C30 heteroaryl group, and L1 is selected from the group consisting of C6 to C30 arylene group and C5 to C30 heteroarylene group,
wherein a is 0 or 1,
wherein each of R1 to R14 is independently selected from the group consisting of H, D, C1 to C10 alkyl group, C6 to C30 aryl group and C5 to C30 heteroaryl group, or adjacent two of R1 to R14 are connected to each other to form a fused ring,
wherein in Formula 3, each of Y1 and Y2 is independently selected from the group consisting of C6 to C30 aryl group and C5 to C30 heteroaryl group, L1 is selected from the group consisting of C6 to C30 arylene group and C5 to C30 heteroarylene group,
wherein b is 0 or 1, and
wherein each of R21 to R34 is independently selected from the group consisting of H, D, C1 to C10 alkyl group, C6 to C30 aryl group and C5 to C30 heteroaryl group, or adjacent two of R21 to R34 are connected to each other to form a fused ring.