Solid electrolyte capacitor and method for manufacturing the same
US6580601B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2002 |
| Grant date | Jun 17, 2003 |
| Priority date | — |
| Expiry date | Oct 30, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/13
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A solid electrolyte capacitor includes an anode made of a valve metal on whose surface a dielectric oxide film layer is formed, a solid electrolyte layer formed on the dielectric oxide film, a cathode layer formed on the solid electrolyte layer, a cathode contact terminal electrically connected to the cathode layer, and an anode contact terminal electrically connected to the anode layer. The cathode layer includes a carbon layer containing carbon particles, and a conductive paste layer containing conductive metal particles and having numerous pores, formed in that order from the solid electrolyte layer side. The solid electrolyte capacitor further includes a conductive polymer layer formed through the numerous pores of the conductive paste layer and connecting the carbon particles of the carbon layer and the conductive metal particles of the conductive paste layer. Thus, the interface resistance between the carbon layer and the conductive paste layer is lowered, and a solid electrolyte capacitor with small equivalent series resistance can be provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.