Patent ID: 11908630
Assignee: TOKIN CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method for manufacturing a solid electrolytic capacitor comprising:
forming a dielectric layer on an anode body made of a valve metal;
forming a solid electrolyte layer on the dielectric layer; and
forming a cathode body layer on the solid electrolyte layer, wherein
the forming of the solid electrolyte layer comprises:
forming a first layer by forming, after forming a first conductive polymer on the dielectric layer by using chemical polymerization, a second conductive polymer composed of a self-doped-type conductive polymer;
removing excessive second conductive polymer formed on the surface of the first conductive polymer by washing the first layer; and
forming a second layer containing a third conductive polymer on the first layer by using a suspension containing a conductive polymer doped with a polymer dopant, wherein
the first conductive polymer has a sponge-like structure, and
when the second layer is formed, the third conductive polymer enters into voids of the sponge-like structure of the first conductive polymer so that the first conductive polymer comes into contact with the third conductive polymer.