PROCESS FOR FORMING AN ELECTROACTIVE LAYER
First Claim
Patent Images
1. A process for vacuum drying comprising:
- depositing a liquid composition comprising a film-forming material and at least one solvent onto a workpiece to form a wet layer;
placing the wet layer on the workpiece into a vacuum chamber including a condenser; and
treating the wet layer at a controlled temperature in the range of −
25°
to 80°
C. and under an applied vacuum in the range of 10−
6 to 1,000 Torr for a period of 1-100 minutes;
wherein the condenser is maintained at a temperature at which the solvent will condense as a liquid at the applied vacuum.
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Abstract
There is provided a process for vacuum drying. The process includes the steps of: depositing a liquid composition containing a film-forming material and at least one solvent onto a workpiece to form a wet layer; placing the wet layer on the workpiece into a vacuum chamber including a condenser; and treating the wet layer at a controlled temperature in the range of −25 to 80° C. and under an applied vacuum in the range of 10−6 to 1,000 Torr for a period of 1-100 minutes; wherein the condenser is maintained at a temperature at which the solvent will condense as a liquid at the applied vacuum.
15 Citations
22 Claims
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1. A process for vacuum drying comprising:
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depositing a liquid composition comprising a film-forming material and at least one solvent onto a workpiece to form a wet layer; placing the wet layer on the workpiece into a vacuum chamber including a condenser; and treating the wet layer at a controlled temperature in the range of −
25°
to 80°
C. and under an applied vacuum in the range of 10−
6 to 1,000 Torr for a period of 1-100 minutes;wherein the condenser is maintained at a temperature at which the solvent will condense as a liquid at the applied vacuum. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A process for forming a layer of electroactive material, comprising:
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providing a workpiece having at least one active area; depositing a liquid composition comprising the electroactive material and at least one solvent onto the workpiece in the active area, to form a wet layer; placing the wet layer on the workpiece into a vacuum chamber including a condenser; treating the wet layer on the workpiece at a controlled temperature in the range of −
25°
to 80°
C. and under a vacuum in the range of 10−
6 to 1,000 Torr, for a first period of 1-100 minutes, to form a partially dried layer, wherein the condenser is maintained at a temperature at which the solvent will condense as a liquid at the applied vacuum;heating the partially dried layer to a temperature above 100°
C. for a second period of 1-50 minutes to form a dried layer,wherein the dried layer has a substantially flat profile in the active area. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification