| US 7,580,246 B2 | ||
| Solid electrolytic capacitor and method for manufacturing same | ||
| Seiji Takagi, Osaka (Japan); Ayumi Kochi, Osaka (Japan); Kenji Akami, Osaka (Japan); Chiharu Hayashi, Osaka (Japan); and Tomoko Kawashima, Osaka (Japan) | ||
| Assigned to Panasonic Corporation, Osaka (Japan) | ||
| Appl. No. 11/667,482 PCT Filed Jan. 06, 2006, PCT No. PCT/JP2006/000057 § 371(c)(1), (2), (4) Date May 10, 2007, PCT Pub. No. WO2006/075551, PCT Pub. Date Jul. 20, 2006. |
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| Claims priority of application No. 2005-003572 (JP), filed on Jan. 11, 2005. | ||
| Prior Publication US 2008/0007893 A1, Jan. 10, 2008 | ||
| Int. Cl. H01G 9/02 (2006.01) | ||
| U.S. Cl. 361—525 [29/25.03] | 8 Claims |
| 1. A solid electrolytic capacitor comprising a capacitor element having a sheath,
the capacitor element including:
a valve metal having a porous layer;
a dielectric film formed on a surface of the porous layer;
a solid electrolyte layer formed on the dielectric film;
a collector layer formed on the solid electrolyte layer; and
external electrodes coupled to the valve metal and the collector layer, respectively,
the solid electrolyte layer including:
a first conductive polymer layer that is formed on the dielectric film and made of a conductive polymer containing a derivative
of polyaniline; and
a second conductive polymer layer that is formed on the first conductive polymer layer and made of a conductive polymer complexed
with an ionic polymer, the ionic polymer made from maleic acid,
wherein the derivative of polyaniline is a conductive polymer represented by a following formula,
 |