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US 12,720,945 B2Granted
Organic electroluminescent devices
AssigneeUniversal Display Corporation
InventorsVadim Adamovich, Michael Stuart Weaver, Nicholas J. Thompson
Life of this patent
Estimating the term…
Abstract
Devices having multiple multicomponent emissive layers are provided, where each multicomponent EML includes at least three components. Each of the components in each EML is a host material or an emitter. The devices have improved color stability and relatively high luminance.
Claims20
A device comprising:
- a first electrode;
- a second electrode;
- a first emissive layer disposed between the first electrode and the second electrode, the first emissive layer comprising a first host material, a second host material different than the first host material, a first emissive material, and a second emissive material different than the first emissive material;
- a second emissive layer disposed between the first electrode and the second electrode and in direct physical contact with the first emissive layer, the second emissive layer comprising a third host material, a fourth host material different than the third host material, and a third emissive material.
1 more element
A consumer electronic product comprising:
- an organic light emitting device (OLED) comprising:
- a first electrode;
- a second electrode;
- a first emissive layer disposed between the first electrode and the second electrode, the first emissive layer comprising a first host material, a second host material different than the first host material, a first emissive material, and a second emissive material different than the first emissive material;
- a second emissive layer disposed between the first electrode and the second electrode and in direct physical contact with the first emissive layer, the second emissive layer comprising at least a third host material, a fourth host material different than the third host material, and a third emissive material.
2 more elements
Dependencies are inferred from the claim text.