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901 results about "Film capacitor" patented technology

Film capacitors, plastic film capacitors, film dielectric capacitors, or polymer film capacitors, generically called "film caps" as well as power film capacitors, are electrical capacitors with an insulating plastic film as the dielectric, sometimes combined with paper as carrier of the electrodes.

Multi-layered unit

A multi-layered unit according to the present invention includes a support substrate formed of a material which has conductivity and on which a dielectric material containing a bismuth layer structured compound can be epitaxially grown, at least the surface thereof being oriented in the [001] direction, and a dielectric layer formed by epitaxially growing a dielectric material containing a bismuth layer structured compound on the support substrate and formed of a dielectric material containing a bismuth layer structured compound oriented in the [001] direction. Since the thus constituted multi-layered unit includes the dielectric layer containing a bismuth layer structured compound oriented in the c axis direction, in the case of, for example, providing an upper electrode on the dielectric layer to form a thin film capacitor and applying a voltage between the electrode layer and the upper electrode, the direction of the electric field substantially coincides with the c axis of the bismuth layer structured compound contained in the dielectric layer. As a result, since the ferroelectric property of the bismuth layer structured compound contained in the dielectric layer can be suppressed and the paraelectric property thereof can be fully exhibited, it is possible to fabricate a thin film capacitor having a small size, large capacitance and an excellent dielectric characteristic.
Owner:TDK CORPARATION
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