Patent ID: 11968852
Assignee: BOE TECHNOLOGY GROUP CO., LTD.
Field: nan (nan)
Classification: CPC H | IPC H

Claim 1:
2. The light-emitting device according to claim 1, wherein
a lowest unoccupied molecular orbital (LUMO) energy level of the first surface of the ETL is lower than a LUMO energy level of the second surface of the ETL;
an energy level difference between a LUMO energy level of the EML and the LUMO energy level of the first surface of the ETL is greater than 0 and less than or equal to 0.25 eV; and
an energy level difference between the LUMO energy level of the second surface of the ETL and a Fermi energy level of the first electrode is greater than 0 and less than or equal to 0.25 eV.