Formulation for depositing a conjugated polymer layer
AssigneeCambridge Display Technology Limited
InventorsIlaria Lavinia Grzzi, Peter Lyon
Life of this patent
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Abstract
A formulation for depositing a polymer layer in the production of a light-emissive device, the formulation including a conjugated polymer dissolved in a solvent, the solvent including a trialkyl-substituted aromatic hydrocarbon, at least two of the alkyl substituents being ortho to one another; and the use of such formulation in the deposition of a polymer layer on a substrate by an ink-jet method.
Claims13
A composition for depositing a polymer layer in the production of a light-emissive device comprising a fluorene-based conjugated polymer selected from the group consisting of light-emissive polymers, hole transport polymers, electron transport polymers and precursors of light-emissive polymers, hole transport polymers and electron transport polymers dissolved in a solvent which comprises a trialkyl-substituted aromatic hydrocarbon having at least two alkyl substituents ortho to one another.
A method of applying a polymer layer to a substrate comprising:
- providing a composition comprising a fluorene-based conjugated polymer dissolved in a solvent which comprises a trialkyl-substituted aromatic hydrocarbon having at least two alkyl substituents ortho to one another;
- and,
- depositing said composition onto the substrate via a plurality of elongate bores.
A method of applying a polymer layer to a substrate comprising:
- providing a composition comprising a fluorene-based conjugated polymer dissolved in a solvent which comprises a trialkyl-substituted aromatic hydrocarbon having at least two alkyl substituents ortho to one another;
- and,
- depositing said composition onto the substrate by inkjet printing.
A method of applying a polymer to selected areas of a substrate comprising:
- dissolving a fluorene-based conjugated polymer in a solvent which comprises a trialkyl-substituted aromatic hydrocarbon having at least two alkyl substituents onto to one another to produce a polymer solution;
- supplying the polymer solution to an inkjet print head;
- and,
- ejecting the polymer solution from the print head onto selected areas of the substrate.
Dependencies are inferred from the claim text.