Matsushita Electric Industrial Co., Ltd.

Shinsuke Itoi

Takaaki Higashida

Daisuke Suetsugu

Kenichi Yamamoto

Tadashi Kimura

Munekazu Nishihara

Takashi Imanaka

Tanejiro Ikeda

Kunio Oshima

Hirotaka Hisamura

Jun Katsube

Minoru Kikuchi

Hisayoshi Watanabe

Osamu Sengoku

Toru Uchida

A capacitor ( ) using a flexible substrate ( ) includes a hole portion ( ) formed in a dielectric ( ) to connect an upper electrode ( ) to an external leader electrode ( ). At least part of the hole portion ( ) extends from its lower end to upper end at an inclination between 0.1 and 20&deg; with respect to a top surface of the external leader electrode ( ). Then, an upper end corner of an inclined wall surface of the upper electrode ( ), which inclines along the hole portion ( ) of the dielectric ( ), has a downward inclination between 0.1 and 20&deg;. A lower end corner of the inclined wall surface of the upper electrode ( ), which inclines along the hole portion of the dielectric ( ), has an upward inclination between 0.1 and 20&deg;. As a result, stress concentration on the corners of the upper electrode ( ) is drastically reduced to prevent the upper electrode ( ) from cracking.

Capacitor and manufacturing method thereof

A film capacitor which has a plurality of electrodes; at least one layer of dielectric member made of organic material and interposed between each pair of neighboring electrodes; impreganated members made of organic material and disposed in a gap between the electrode and the dielectric layer or between the dielectric layers; and end electrodes applied respectively to opposite electrode drawout end faces and connected alternately with the electrodes. The dielectric layers and the impregnated members alternate with each other and have respective end faces. The end portions of the dielectric layers and impregnated members are indented to provide respective indented end face.

Film capacitor and method of making the same

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Matsue, Japan

Shinsuke Itoi