Patent ID: 8198126
Filing Date: 2012-06-12
Classification: H01G

Abstract:
1. A method of producing solid electrolytic capacitors, comprising sequentially stacking a dielectric oxide film, a semiconductor layer and an electrode layer on a sintered body of conductive powder to which an anode lead is connected and then encapsulating the sequential stack with an outer jacket resin, wherein the semiconductor layer is formed by electrolysis which comprises immersing the sintered body having the dielectric oxide film thereon in an electrolysis solution and applying current between the sintered body having the dielectric oxide film thereon and a cathode plate in contact with the electrolysis solution, the cathode plate being a cathode plate with its surface area having been made larger by 10 times or more than its apparent surface area, wherein said cathode plate comprises a wall of a container holding said electrolysis solution and used to form the semiconductor layer.