Solid electrolyte capacitor and method of producing the same
US6219223A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 24, 1998 |
| Grant date | Apr 17, 2001 |
| Priority date | — |
| Expiry date | Sep 24, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/13
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a solid electrolyte capacitor including a solid electrolyte implemented by a conducting polymer produced by the chemical oxidative polymerization of a polymerization system containing a monomer, a cation serving as an oxidizer, and an anion serving as a dopant, the polymerization system contains the anion in a stoichiometrically excessive amount relative to the cation. The conductivity of a conducting polymer included in the capacitor is prevented from being deteriorated in a high temperature atmosphere, so that a desirable ESR is preserved during 125.degree. C. heat test. In addition, a conductive high polymer layer having an extremely desirable film property is formed. This successfully prevents stresses ascribable to the expansion and contraction of a seal resin from being transferred to the capacitor during heat test, and thereby protects LC and ESR from deterioration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.