Solid electrolytic capacitor, and method of manufacturing same
US4805074A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 28, 1987 |
| Grant date | Feb 14, 1989 |
| Priority date | — |
| Expiry date | Sep 28, 2007 |
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 has a capacitor element including a metal plate, such as a plate of aluminum, tantalum, niobium or titanium, capable of having a dielectric oxidation layer formed thereon, a resist layer of a desired shape formed on a predetermined portion of the metal plate, a dielectric oxidation layer formed on a surface of the metal plate at one portion thereof defined by the resist layer, a polymer layer of a heterocyclic compound such as pyrrole, furan or thiophene formed on the dielectric oxidation layer, a conductive layer formed on the polymer layer, a first terminal attached to another portion of the metal plate defined by the resist layer, and a second terminal attached to the conductive layer. In an embodiment, a plurality of the metal plates are stacked to obtain a capacitor element having a multi-layered structure. In another embodiment, the polymer layer and conductive layer are formed successively to obtain an array-type solid electrolytic capacitor element comprising a single metal plate. In a further embodiment, the polymer layer and conductive layer are formed successively to obtain an array-type solid electrolytic capacitor element comprising stack…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.