Solid electrolytic capacitor, and method for preparing the same
US6671167B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 21, 2002 |
| Grant date | Dec 30, 2003 |
| Priority date | — |
| Expiry date | Nov 21, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/13
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A solid electrolytic capacitor is disclosed which combines low LC with Low ESR and which has good characteristics even in a high frequency range, and a method for preparing the same is also disclosed. In the solid electrolytic capacitor whose electrolytic layer contains electrically conductive particles, non-conductive particles are present in at least a part of an interface between a dielectric layer and the electrolyte layer. By employing the structure, local intensifications of field strength in the dielectric layer are prevented to enable a problem of increase in LC to be overcome while keeping ESR low. By the method which comprised a step of applying a colloidal dispersion containing the non-conductive particles in the form of colloidal particles to the post-electrolytic layer formation step product, the solid electrolytic capacitor having the above-mentioned structure can be prepared efficiently.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.