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Title:
SOLID ELECTROLYTIC CAPACITOR UTILIZING IONIC CONDUCTION OF ION CONDUCTOR
Document Type and Number:
Japanese Patent JP2003234255
Kind Code:
A
Abstract:

To provide a solid electrolytic capacitor utilizing the ionic conduction of an ion conductor.

For manufacturing the solid electrolytic capacitor, a metal or a semiconductor which is easily oxidized and whose conductivity decreases by more than ten digits upon oxidation, such as aluminum or silicon, is deposited on an ion conductor for forming a positive electrode (both electrodes in the case of AC voltage application). A DC or AC voltage is applied for the formation of a dielectric oxide having a large capacitance along the boundary surface in between the positive electrode and the ion conductor (between interfaces involving both electrodes in the case of AC application), and the capacitance changes dependent on the intensity of the formation voltage. In this solid electrolytic capacitor, the oxide is easily erased upon polarity reversion or produced again upon another polarity reversion, which enables the capacitor to have capacitance variable in magnitude, erasable, and restorable.


Inventors:
DOI AKIRA
Application Number:
JP2002032368A
Publication Date:
August 22, 2003
Filing Date:
February 08, 2002
Export Citation:
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Assignee:
DOI AKIRA
International Classes:
H01G9/07; H01G7/00; H01G9/04; H01G9/14; (IPC1-7): H01G9/14; H01G7/00; H01G9/04; H01G9/07