Patent ID: 6229689
Filing Date: 2001-05-08
Classification: H01G,Y02E

Abstract:
A solid electrolyte capacitor comprising a solid electrolyte layer formed of a polymeric product layer comprising a polythiophene or polythiophene derivative or comprising at least one layer formed of a polymer or copolymer of at least one monomer selected from the group consisting of pyrrole, thiophene, furan, aniline and their derivatives and an outermost layer formed of polythiophene or polythiophene derivative,wherein said polymeric product layer is doped with an organic sulfonic acid selected from the group consisting of aromatic polysulfonic acid including a plurality of sulfonic groups and having a three-dimensional molecular size larger than that of p-toluenesulfonic acid, organic sulfonic acid having a hydroxy group, organic sulfonic acid having a carboxyl group alicyclic sulfonic acid and benzoquinone sulfonic acid.