Patent ID: 8164884

Claim:
A solid electrolytic capacitor comprising: an anode conductor including a porous valve-acting metal and having pores with openings in a surface thereof; a solid electrolyte layer formed on the surface of the anode conductor so as to be filled in at least a portion of each of the pores and to close the openings; and a cathode conductor formed on the solid electrolyte layer; wherein the solid electrolyte layer comprises: an inner polymer layer spread along the surface of the anode conductor; a first polymer layer formed on the inner polymer layer; and a second polymer layer formed on the first polymer layer and having a particle size that is greater than a particle size of the first polymer layer; wherein the inner polymer layer and the first polymer layer cooperatively close the openings; and wherein the first polymer layer is formed by drying a first polymer solution which contains a conductive polymer having a particle size that is smaller than a diameter of each of the openings, and which is adhered to the inner polymer layer.