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US 2010/0149729 A1Published application
Solid electrolytic capacitor and method for manufacturing the same
AssigneeShowa Denko K.K.
InventorMasaaki Nishioka
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AssigneeShowa Denko K.K.
InventorMasaaki Nishioka
Estimating the term…
A solid electrolyte capacitor comprising an anode with a valve action composed of a metal material or a conductive oxide and having a dielectric layer, a solid electrolyte and a conductive layer, formed in this order on the surface thereof, characterized in that said conductive layer comprises conductive powders which have a particle diameter distribution wherein at least two peaks of particle diameter are present, and the minimum peak particle diameter thereof is in the range of larger than 100 nm but not larger than 1 μm. The conductive powder preferably has at least one peak having a particle size 8 to 75 times the minimum peak of particle size. The solid electrolyte capacitor has very low equivalent series resistance (ESR).
A solid electrolyte capacitor comprising an anode composed of a metal material with a valve action or a conductive oxide, and having a dielectric layer, a solid electrolyte layer and a conductive layer, formed in this order on the surface of the anode, characterized in that said conductive layer comprises conductive powders which have a particle diameter distribution wherein at least two peaks of particle diameter are present, and the minimum peak particle diameter thereof is in the range of larger than 100 nm but not larger than 1 μm.
A process for producing a solid electrolyte capacitor comprising the steps of forming a solid electrolyte layer on a dielectric layer formed on the surface of a metal substrate with a valve action, and then, forming a conductive layer on the solid electrolyte layer, characterized in that said conductive layer is formed from a conductive paste comprising a mixture of at least two kinds of conductive powders having different peak particle diameters wherein the minimum peak particle diameter is larger than 100 nm but not larger than 1 μm.
Dependencies are inferred from the claim text.