Patent ID: 11864401
Assignee: LG DISPLAY CO., LTD.
Field: nan (nan)
Classification: CPC H | IPC H

Claim 16:
17. A lighting device comprising:
a substrate including a plurality of pixels; and
a light emitting device disposed on each pixel of the substrate and including a first electrode, an organic material layer and a second electrode;
wherein the first electrode is disposed on the substrate,
wherein the organic material layer is disposed on the first electrode, and includes a hole injection layer, a first resonance auxiliary layer, a first hole transport layer, and a light emitting layer,
wherein the second electrode is disposed on the organic material layer,
wherein the first resonance auxiliary layer consisting of a single layer, and serves to adjust at least one of a distance between the light emitting layer included in the organic material layer and the first electrode and a distance between the light emitting layer and the second electrode,
wherein the first resonance auxiliary layer includes a first compound with a lowest unoccupied molecular orbital (LUMO) level of −4 eV or less and a second compound with a highest occupied molecular orbital (HOMO) level of −4 eV or less, and
wherein the thickness of the first resonance auxiliary layer is 20% to 90% of a total thickness of the organic material layer.