Coating liquid for forming organic layer in organic LED display and method of manufacturing organic LED display
AssigneeSharp Kabushiki Kaisha
InventorsYoshimasa Fujita, Yoshitaka Kawase
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Abstract
A coating liquid for forming an organic layer of an organic LED display which layer includes a light-emitting layer or a light-emitting layer and a charge-transporting layer, the liquid comprising: an organic material or a precursor thereof required for forming the organic layer, and at least one low volatile liquid solvent having a vapor pressure of 10 mmHg or less at 20° C. and a boiling point lower than a denaturing temperature of the organic material or lower than a converting temperature of the precursor.
Claims9
A method of manufacturing organic LED display including ink jet forming a light emitting organic layer, the method comprising:
- providing a coating liquid comprising (a) an organic material having at least one of conductivity and fluorescence, and (b) at least one low volatile liquid solvent having a vapor pressure of 10 mmHg of less at 20° C. and a boiling point lower than a denaturing temperature of the organic material and wherein the low volatile liquid solvent has a boiling point lower than the melting point of the organic material;
- ink-jet discharging the liquid by an ink-jet technique to form at least one film, and
- heat drying the film at a temperature not lower than the boiling point of a low volatile liquid solvent contained in the coating liquid, thereby forming the organic layer.
A method of manufacturing an organic LED display including ink-jet forming an organic layer of the LED display, wherein the organic layer includes at least a light emitting layer, the method comprising:
- providing a coating liquid comprising a precursor of an organic material having conductivity and/or fluorescence for forming the organic layer, and at least one low volatile liquid solvent having a vapor pressure of 10 mmHg of less at 20° C. and a boiling point lower than a converting temperature of the precursor of the organic material, and
- wherein the low volatile liquid solvent has a boiling point lower than the melting point of the organic material,
- discharging the coating liquid by an ink-jet technique to form at least one film, and
- heat drying the film at a temperature not lower than the boiling point of a low volatile liquid solvent in the coating liquid, thereby forming the organic layer.
Dependencies are inferred from the claim text.