CAPACITOR MANUFACTURING METHOD

A capacitor manufacturing method that enables a capacitor having a high withstand voltage, a high electrostatic capacitance and a satisfactorily small ESR to be manufactured simply and at a high level of productivity. In the capacitor manufacturing method, a film-formation treatment of applying a conductive polymer solution containing a À-conjugated conductive polymer, a polyanion and a solvent to the dielectric layer side of a capacitor substrate having a dielectric layer formed on the surface of an anode, and then performing drying to form a conductive polymer film, is performed at least twice, and the conductive polymer solution used in at least one film-formation treatment among the second film-formation treatment and subsequent film-formation treatments is a high-viscosity solution having a higher viscosity than the conductive polymer solution used in the first film-formation treatment.