Patent ID: 11925047
Assignee: LG DISPLAY CO., LTD.
Field: nan (nan)
Classification: CPC H | IPC H

Claim 0:
1. A light-emitting device comprising:
a first electrode, an electron blocking layer, a first emissive layer, a second emissive layer, and an electron transport layer, and a second electrode, which are sequentially disposed, wherein
the first emissive layer comprises a first host and a first blue dopant,
the second emissive layer comprises a second host and a second blue dopant,
a triplet energy level of the first host is greater than a triplet energy level of the second host,
a triplet energy level of the first blue dopant is greater than the triplet energy level of the first host,
a singlet energy level of the first host is greater than a singlet energy level of the second host, and
the singlet energy level of the second host is greater than a singlet energy level of the first blue dopant.