Solid electrolytic capacitor element and method for producing the same
US6449140B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 9, 2001 |
| Grant date | Sep 10, 2002 |
| Priority date | — |
| Expiry date | Jul 9, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01G9/028
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention provides a solid electrolytic capacitor having a structure that relieves thermal stress, prevents leakage current, exhibits low impedance and ensures high reliability. The solid electrolytic capacitor element has a valve-acting metal substrate with a dielectric film and an edge part acting as an anode, an insulating layer circumferentially provided on the substrate, a solid electrolyte layer and an electrically conducting layer having a carbon paste layer and a metal powder-containing electrically conducting layer formed in this order on the entire substrate surface opposite to the anode with respect to the insulating layer and acting as a cathode. The electrically conducting layer is provided within a region of the carbon paste layer or with a spacing from the cathode side edge part of the insulating layer. The present invention also provides a method for producing the element, and a solid electrolytic capacitor using the element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.