Solid electrolytic capacitor

Details Solid electrolytic capacitor Solid electrolytic capacitor

2006-04-26

2009-02-24

Thomas, Eric (Department: 2831)

Electricity: electrical systems and devices

Electrolytic systems or devices

Solid electrolytic capacitor

C029S025030

Reexamination Certificate

active

07495892

ABSTRACT:
The present invention relates to an anode substrate for a solid electrolytic capacitor which is produced by cutting obliquely a metal substrate comprising a valve-acting metal layer having fine pores and a valve-acting metal layer without fine pores, and having a cut surface which is formed by elongation of the valve-acting metal layer without fine pores dragged by a cutting blade; particularly to an anode substrate for a solid electrolytic capacitor which is produced by cutting obliquely a metal substrate comprising a valve-acting metal layer having fine pores and a valve-acting metal layer without fine pores, and a layer of the elongated valve-acting metal which is generated by that the valve-acting metal layer without fine pores is elongated being dragged along with a cutting blade and covers the edge part of the valve-acting layer having fine pores meets the requirement represented by the following formula:in-line-formulae description="In-line Formulae" end="lead"?0≦y/z≦1  [Formula 1]in-line-formulae description="In-line Formulae" end="tail"?wherein y represents the thickness of the layer of the elongated valve-acting metal in the direction of the thickness of the substrate and z represents the thickness of the valve-acting layer having fine pores which is in contact with the elongated metal layer in the direction of the thickness of the substrate, respectively; and to a solid electrolytic capacitor comprising the above-mentioned anode substrate, an edge of which is chamfered at least partially.

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