| 摘要 |
PROBLEM TO BE SOLVED: To provide a process for manufacturing a solid electrolytic capacitor in which small size large capacity is attained while enhancing electrostatic capacity and breakdown voltage and suppressing LC variation after reflow. SOLUTION: An anode foil and a cathode foil each having an oxide film layer formed on the surface are wound through a separator to form a capacitor element which is then subjected to restoration formation. The capacitor element is immersed into aqueous solution of polyimide silicon to form a film of polyimide silicon on the surface of the oxide film. Subsequently, the capacitor element is impregnated with conductive polyaniline solution having concentration prepared to 5 wt% or below, and solvent is removed after a voltage is applied (or while applying a voltage) to the anode foil thus forming a conductive polyaniline film in the capacitor element. It is then impregnated with a polymerizing monomer and an oxidizing agent thus forming a solid electrolyte layer composed of conductive polymer. Thereafter, the capacitor element is inserted into an enclosure case, sealing is carried out by fixing a sealing rubber to the opening end part, and then aging is performed thus forming a solid electrolytic capacitor. COPYRIGHT: (C)2006,JPO&NCIPI
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