Method of manufacturing a thin film capacitor having separated dielectric films

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United States of America Patent

PATENT NO 8997321
APP PUB NO 20130048596A1
SERIAL NO

13661885

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A thin film capacitor and a method of manufacturing the same are provided. The thin film capacitor includes a metal foil, dielectric layers and internal electrode layers alternately disposed on the metal foil, and a top electrode layer on the topmost layer among the two or more dielectric layers. These layers have peripheries that define an outer profile flaring toward the metal foil as viewed from the stacking direction of the thin film capacitor, and at least one dielectric layer of two or more dielectric layers satisfies a relationship B>A>0 wherein A is a gap of the periphery of the internal electrode layer directly below the dielectric layer protruding from the periphery of the dielectric layer, and B is a gap of the periphery of the dielectric layer protruding from the periphery of the internal electrode layer or the top electrode layer directly above the dielectric layer. The thin film capacitor has a structure free from short-circuiting and reducing debris of broken dielectric material.

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Patent Owner(s)

  • TDK CORPORATION

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Komuro, Eiju Tokyo, JP 21 458
Oikawa, Yasunobu Tokyo, JP 25 153

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