Patent ID: 11956980
Assignee: LG DISPLAY CO., LTD.
Field: nan (nan)
Classification: CPC H | IPC H

Claim 0:
1. An organic light emitting device comprising:
a light emitting layer provided between a first electrode and a second electrode arranged opposite each other,
wherein the light emitting layer comprises at least one host, a blue phosphorescent dopant for a blue color and a blue fluorescent dopant for the blue color in a single layer,
wherein a light emission for the blue color is concentrated upon the blue fluorescent dopant through energy transfers from the host and the blue phosphorescent dopant to the blue fluorescent dopant in the single layer,
wherein the blue phosphorescent dopant is configured to have a first triplet energy level; and
wherein the blue fluorescent dopant is configured to have a second triplet energy level lower than the first triplet energy level and to generate fluorescence and thermally activated delayed fluorescence (TADF).