Patent ID: 8174820
Filing Date: 2012-05-08
Classification: H01G

Abstract:
1. An element for a solid electrolytic capacitor comprising an oxide film layer, an electroconductive polymer layer, a carbon paste layer and a silver paste layer sequentially formed on the surface of an anode substrate comprising a valve-acting metal material, wherein the composition or the thickness of the silver paste layer covering the side (edge) portions and that of the silver paste layer covering the face portions of the anode substrate on the surface of which the oxide film layer, the electroconductive polymer layer and the carbon paste layer are sequentially laminated is controlled, wherein the thickness of the silver paste layer covering the side (edge) portions of the anode substrate is 6 μm or more and the thickness of the silver paste layer covering the face portions of the anode substrate is 20 μm or less, and wherein the silver paste layer covering the side (edge) portions of the anode substrate is thicker than the silver paste layer covering the face portions of the anode substrate, wherein a laminated structure is formed by applying liquid A, which has a composition containing materials to form the silver paste layer on the anode substrate having the carbon paste layer on the surface, on the side (edge) portions of the anode substrate and by applying liquid B, which has a composition of higher wettability than that of liquid A and comprises the materials to form the silver paste layer, on the face portions of the anode substrate.