Solid electrolytic capacitor and method for manufacturing the same
US4943892A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 1989 |
| Grant date | Jul 24, 1990 |
| Priority date | — |
| Expiry date | Mar 31, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01G9/15
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A solid electrolytic capacitor comprising a capacitor element which includes a valve metal member capable of forming a dielectric oxide film thereon, a dielectric oxide film formed on the valve metal member, a manganese oxide layer formed on the dielectric oxide film, a conductive polymer film formed on the manganese oxide film by electrolytic polymerization, and terminals formed on the valve metal member and the conductive polymer film, respectively. The solid electrolytic capacitor is improved in capacitor characteristics. A method for manufacturing the solid electrolyte is also described wherein the conductive polymer film is readily formed on the manganese dioxide layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.