Method of manufacturing organic semi-conductor solid electrolytic capacitor
US4929316A · kind A · utility
6Cited by
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10Claims
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Key dates
| Filing date | Aug 30, 1989 |
| Grant date | May 29, 1990 |
| Priority date | — |
| Expiry date | Aug 30, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25D9/02
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method of manufacturing an organic semi-conductor solid electrolytic capacitor wherein a conductive polymer thin film layer of a heterocyclic compound, i.e., pyrrole, thiophene or furan, is formed as a solid electrolyte on the surface of a metal substrate having a dielectric oxide film formed thereon by electrolytic oxidation polymerization carried out in an electrolytic solution which contains pyrrole, thiophene or furan as a heterocyclic compound and an aliphatic or aromatic sulfonic acid or a salt thereof as a supporting electrolyte in an organic solvent, for example, acetonitrile, acetone or propylene carbonate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.