Method of manufacturing solid electrolytic capacitor
AssigneePanasonic Intellectual Propety Management Co., Ltd.
InventorYoshiaki Ishimaru
Life of this patent
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Abstract
A method of manufacturing a solid electrolytic capacitor having an even conductive polymer layer includes the steps of forming a conductive polymer layer on an anode element by bringing a dispersion containing a conductive solid and a first solvent into contact with the anode element having a dielectric film formed thereon, washing the anode element with a second solvent higher in boiling point than the first solvent, in which the conductive solid can be dispersed, after the conductive polymer layer is formed, and drying the anode element washed with the second solvent at a temperature not lower than the boiling point of the first solvent and lower than the boiling point of the second solvent.
Claims20
A method of manufacturing an electrolytic capacitor comprising the steps of:
- adhering particles made of conductive polymer or aggregates made of conductive polymer onto an anode element, by bringing a dispersion in which said particles made of conductive polymer or said aggregates made of conductive polymer are dispersed in a first solvent into contact with said anode element having a dielectric layer formed thereon;
- bringing a second solvent in which said particles made of conductive polymer or said aggregates made of conductive polymer can be dispersed into contact with said particles made of conductive polymer adhered onto said anode element or said aggregates made of conductive polymer adhered onto said anode element;
- drying said anode element at a temperature not lower than the boiling point of said first solvent after said second solvent is brought into contact with said particles made of conductive polymer or said aggregates made of conductive polymer.
A method of manufacturing an electrolytic capacitor comprising the steps of:
- adhering particles made of conductive polymer or aggregates made of conductive polymer onto an anode element by bringing a dispersion in which said particles made of conductive polymer or said aggregates made of conductive polymer are dispersed in a first solvent into contact with said anode element having a dielectric layer formed thereon;
- bringing a second solvent into contact with said particles made of conductive polymer adhered onto said anode element or said aggregates made of conductive polymer adhered onto said anode element;
- drying said anode element at a temperature not lower than the boiling point of said first solvent after said second solvent is brought into contact with said particles made of conductive polymer or said aggregates made of conductive polymer,
- said second solvent containing at least one of γ-butyrolactone, γ-valerolactone, ethylene carbonate, propylene carbonate, 3-methyl-2-oxazolidone, N-methyl-2-pyrrolidone, N-methyl-2-propylene, 2-ethoxyethanol, ethylene oxide, ethylene glycol, propylene oxide, propylene glycol, and ethylene glycol monoethyl ether.
Dependencies are inferred from the claim text.