Patent ID: 6462936
Filing Date: 2002-10-08
Classification: H01G,Y02E

Abstract:
A solid electrolytic capacitor comprising an anode, a dielectric film formed on the anode by anodic oxidation, a solid electrolytic layer formed on the dielectric film, and a cathode connected with the solid electrolytic layer, the solid electrolytic layer being made from a conducting polymer obtained by doping, with alkyl sulfonic acid ions, a polymer including a heterocyclic monomer unit represented by the following general formula as a repeating unit in a ratio of one of the alkyl sulfonic acid ions per 2 through 5 heterocyclic monomer units represented by the general formula: wherein R1 and R2 independently indicate an alkyl group or H, and X indicates S or NR3 in which R3 indicates an alkyl group or H.