US 11,950,437 B2
Organic light emitting device, and display apparatus, photoelectric conversion apparatus, electronic apparatus, illumination apparatus, and moving object including the same
Naoki Yamada, Inagi (JP); Satoru Shiobara, Hiratsuka (JP); Itaru Takaya, Atsugi (JP); and Jun Kamatani, Tokyo (JP)
Assigned to CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Dec. 29, 2022, as Appl. No. 18/148,042.
Application 18/148,042 is a continuation of application No. 16/861,076, filed on Apr. 28, 2020.
Claims priority of application No. 2019-087710 (JP), filed on May 7, 2019.
Prior Publication US 2023/0137041 A1, May 4, 2023
Int. Cl. H10K 50/11 (2023.01); H10K 50/15 (2023.01); H10K 50/16 (2023.01); H10K 50/17 (2023.01); H10K 50/818 (2023.01); H10K 59/124 (2023.01); H10K 59/60 (2023.01); H10K 85/60 (2023.01); H10K 101/30 (2023.01); H10K 101/40 (2023.01)
CPC H10K 50/11 (2023.02) [H10K 50/15 (2023.02); H10K 50/16 (2023.02); H10K 50/17 (2023.02); H10K 50/818 (2023.02); H10K 59/124 (2023.02); H10K 59/60 (2023.02); H10K 85/623 (2023.02); H10K 85/631 (2023.02); H10K 2101/30 (2023.02); H10K 2101/40 (2023.02)] 27 Claims
OG exemplary drawing
 
1. An organic light emitting device comprising, in sequence, a first electrode, a first charge transport layer, a second charge transport layer in contact with the first charge transport layer, a function layer, and a second electrode,
wherein the first charge transport layer includes a first material and a second material different from the first material,
the second charge transport layer includes the second material and a third material different from the second material, and
the first material, the second material and the third material satisfy a condition (a) as follows:
(a) LUMO (the second material)−LUMO (third material)>LUMO (first material)−LUMO (second material),
where LUMO (first material), LUMO (second material), and LUMO (third material) represent a value of lowest unoccupied molecular orbital (LUMO) energy of the first material, a value of LUMO energy of the second material, and a value of LUMO energy of the third material, respectively.