Patent ID: 11917844
Assignee: CANON KABUSHIKI KAISHA
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  G | IPC H

Claim 10:
11. The organic EL element according to claim 1, wherein the second light-emitting layer contains, as the light-emitting material, a blue dopant material, and the blue dopant material satisfies relations (iv) and (v) below:

LUMO(H)<LUMO(BD)  (iv)

HOMO(H)<HOMO(BD)  (v)

where LUMO (H) and LUMO (BD) represent an absolute value of a LUMO energy of the host material and an absolute value of a LUMO energy of the blue dopant material, respectively, and HOMO (H) and HOMO (BD) represent an absolute value of a HOMO energy of the host material and an absolute value of a HOMO energy of the blue dopant material, respectively.