Electrode fabrication methods for organic electroluminscent devices
Assignee3M Innovative Properties Company
InventorsSteven D. Theiss, Ha T. Le, William A. Tolbert, Martin B. Wolk, Paul F. Baude
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Abstract
The present invention provides a process for selectively thermally transferring insulators onto organic electroluminescent stacks or layers to electronically isolate adjacent devices upon deposition of electrode material. This can allow the formation of top electrodes for a plurality of organic electroluminescent devices on a substrate via one deposition step to form a single common top electrode or a plurality of electrodes patterned by shadowing due to the presence of the insulators.
Claims13
A process for forming organic electroluminescent devices comprising the steps of:
- providing a display substrate having one or more addressable first electrode layers thereon;
- forming one or more organic electroluminescent layers over at least a portion of the one or more first electrodes on the substrate, thereby defining one or more organic electroluminescent stacks, each stack comprising a portion of one of the one or more organic electroluminescent layers on a portion of one of the one or more first electrode layers;
- selectively thermally transferring a plurality of insulators from a thermal transfer donor sheet onto the one or more organic electroluminescent layers, leaving exposed at least two portions of the one or more organic electroluminescent stacks;
- and
- depositing a second electrode after the step of transferring the plurality of insulators, thereby forming at least two organic electroluminescent devices separated by one or more of the insulators.
A process for forming organic electroluminescent devices comprising the steps of:
- providing a display substrate having a plurality of independently addressable electrode pads disposed thereon;
- forming one or more organic electroluminescent layers over the electrode pads, each organic electroluminescent layer associated with at least one electrode pad;
- selectively thermally transferring a plurality of insulators from a thermal transfer donor sheet onto the one or more organic electroluminescent layers, leaving exposed two or more portions of the one or more organic electroluminescent layers;
- and
- depositing a common electrode over insulators and exposed organic electroluminescent layers, thereby forming at least two organic electroluminescent devices separated by one or more of the insulators.
Dependencies are inferred from the claim text.