| US 7,525,791 B2 | ||
| Solid electrolytic capacitor | ||
| Koji Sakata, Miyagi (Japan); Takeshi Saito, Miyagi (Japan); Yuji Yoshida, Miyagi (Japan); Takeo Kasuga, Miyagi (Japan); Masanori Takahashi, Miyagi (Japan); and Katsuhiro Yoshida, Miyagi (Japan) | ||
| Assigned to NEC Tokin Corporation, Miyagi (Japan) | ||
| Filed on Mar. 05, 2008, as Appl. No. 12/42,618. | ||
| Claims priority of application No. 2007-055299 (JP), filed on Mar. 06, 2007. | ||
| Prior Publication US 2008/0218943 A1, Sep. 11, 2008 | ||
| Int. Cl. H01G 9/04 (2006.01) | ||
| U.S. Cl. 361—528 [361/523; 361/525; 361/529; 361/516; 361/519] | 6 Claims |
| 1. A solid electrolytic capacitor comprising:
a base member having a capacitor element connecting face on its upper surface side and an electrode mounting face on its lower
surface side and an insulating place comprising at least one first conductor and at least one second conductor each providing
conduction between the upper and lower surfaces of said base member; and
a capacitor element having at least one anode portion and at least on cathode portion, on the upper surface of said base member
being connected to each of said first and second conductors,
wherein said capacitor element comprises an anode body made of a parent material which is plate-like or foil-like valve-action
metal, a part of which is connected, as said anode portion, to said first conductor of said base member via an anode electrode
having an insulator in a portion surrounding said anode electrode; an dielectric made of an oxide film of the parent metal
formed on a surface of the parent metal excluding said anode portion, and a cathode body made up of a conductive polymer layer
overlying said dielectric and a cathode conductor layer overlying said conductive polymer layer, and
wherein a part of said cathode conductor layer as the cathode portion is connected to said second conductor of said base member.
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