Selective thermal transfer of light emitting polymer blends
Assignee3M Innovative Properties Company
InventorsManoj Nirmal, Ha T. Le, Martin B. Wolk, Erika Bellmann, Fred McCormick
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Abstract
The present invention provides a selectively thermally transferable blend capable of forming the emissive layer of an organic electroluminescent device. The blend includes a light emitting polymer and an additive selected to promote selective thermal transfer of the blend from a donor element to a proximately located receptor substrate.
Claims26
A thermal transfer donor element comprising a substrate and a transfer layer capable of being selectively thermally transferred from the donor element, the transfer layer comprising a blend of a light emitting polymer and an additive that forms domains in the light emitting polymer, the additive being selected to promote high fidelity thermal transfer of the transfer layer and the blend being capable of forming an emissive layer of an organic electroluminescent device.
A process for patterning a light emitting polymer comprising the steps of:
- providing a thermal transfer donor element comprising a substrate and a transfer layer comprising a blend of a light emitting polymer and an additive that forms domains in the light emitting polymer, the additive being selected to promote high fidelity thermal transfer of the transfer layer and the blend being capable of forming an emissive layer of an organic electroluminescent device;
- bringing the donor element into close proximity with a receptor substrate;
- and
- selectively thermally transferring portions of the transfer layer from the donor to the receptor.
Dependencies are inferred from the claim text.