Patent ID: 11925042
Assignee: BOE TECHNOLOGY GROUP CO., LTD.
Field: nan (nan)
Classification: CPC H | IPC H

Claim 12:
13. The organic electroluminescent device according to claim 1, wherein:
when the P:N ratio is 4:6,

0.45 eV≤HOMO(HTL)−HOMO(EML)≤0.60 eV, and  (1)

0.25≤LUMO(EML)−LUMO(ETL)≤0.40 eV; and

when the P:N ratio is 3:7,

0.40 eV≤HOMO(HTL)−HOMO(EML)≤0.55 eV, and  (1)

0.27≤LUMO(EML)−LUMO(ETL)≤0.35 eV.