Solid electrolytic capacitor, stacked capacitor using the...

Details Solid electrolytic capacitor, stacked capacitor using the... Solid electrolytic capacitor, stacked capacitor using the...

Filed on

2007-05-08

Date issued

2007-05-08

Examiner

Thomas, Eric W. (Department: 2831)

Patent Class

Electricity: electrical systems and devices

SubClass

Electrolytic systems or devices

SubSubClass

Solid electrolytic capacitor

Other Related Categories

C361S532000

Type

Reexamination Certificate

Status

active

Patent number

11157524

Description

ABSTRACT:
On a surface-roughened aluminum foil, an aluminum oxide film as an anodic oxide film is formed. Then, a conductive polymer layer as a solid electrolyte is formed thereon and thereafter a first metal plating layer is directly formed on the conductive polymer layer, thereby forming a cathode portion. On the other hand, a second metal plating layer is formed on another portion of the surface-roughened aluminum foil, which is not subjected to anodic oxidation or which is subjected to anodic oxidation followed by polishing or formation of an anode deposition film, to thereby form an anode portion. Third metal plating layers are formed at the anode and the cathode portions to obtain a capacitor element. A plurality of capacitor elements are stacked and bonded together by fusion after formation of the third metal plating layers. Alternatively, the capacitor elements may be bonded together by a conductive paste without the third metal layers.

REFERENCES:
patent: 6865070 (2005-03-01), Arai et al.
patent: 05326343 (1993-12-01), None
patent: 2001-358039 (2001-12-01), None
patent: 2004-087872 (2004-03-01), None

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