Fujitsu Media Devices Limited

Nichicon Corporation

Fujitsu Corporation

Minoru Funahashi

Katsuharu Yamada

Akira Ueda

Hidetoshi Ishizuka

Toshiyuki Mizutani

Yoshihiko Imanaka

Tadayuki Echigo

Junkichi Mabe

Ryoichi Kozaki

Kenya Sakurai

Ichirou Yamaji

An electrode foil includes a structure a structure in which metal particles and ceramic particles, which primarily include at least one of valve metal particles having a dielectric constant and ceramic particles, are deposited on a surface of a metal foil.

Electrode foil, method of manufacturing electrode foil, and electrolytic capacitor

A method of manufacturing a solid electrolytic capacitor includes: rolling an anode foil, a cathode foil and a separator together, the separator being a mixed fiber composed of a chemical fiber and a natural fiber and being between the anode foil and the cathode foil; degrading and removing the natural fiber with enzyme; and forming an electrolytic layer composed of solid polymer between the anode foil and the cathode foil after degrading and removing the natural fiber.

Solid electrolytic capacitor and method of manufacturing the same

A solid electrolytic capacitor includes a base substrate, a capacitor element, a metal cap, an extractor terminal and an insulating member. The base substrate has electrical conductivity. The capacitor element is provided on the base substrate. The metal cap is coupled to the base substrate and covers the capacitor element. The extractor terminal passes through the base substrate, is coupled to an anode of the capacitor element, and includes a first conductive member acting as a core member and a second conductive member covering the first conductive member. The insulating member is provided between the base substrate and the extractor terminal. Electrical conductivity of the first conductive member is higher than that of the second conductive member. Thermal expansion coefficient of the second conductive member is less than that of the insulating member.

Solid electrolytic capacitor

A capacitor has a capacitor element, a packaging material, and a sealing material. The capacitor element has an anode foil coupled to an anode terminal, a cathode foil coupled to a cathode terminal, a separator, and an electrolyte layer. The anode foil, the cathode foil and the separator are rolled together. The separator is between the anode foil and the cathode foil. The electrolyte layer is formed between the anode foil and the cathode foil. The packaging material has an opening and packages the capacitor element. The sealing material has a through hole where the anode terminal and the cathode terminal pass through and seals the opening of the packaging material. A given space is provided between the sealing material and the capacitor element. A stopper for securing the space is provided on at least one of the anode terminal and the cathode terminal.

Capacitor and manufacturing method of the same

A stacked solid electrolytic capacitor has an anode foil composed of a valve metal, a cathode foil having carbon grains that are evaporated or physically adhered to a surface thereof, a separator and a solid electrolytic layer composed of a conducting polymer. The anode foil, the separator and the cathode foil are stacked in order. The solid electrolytic layer is formed between the anode foil and the cathode foil.

Stacked solid electrolytic capacitor

A stacked solid electrolytic capacitor has a substrate, a capacitor element, and a metal cap. The substrate has electrical conductivity. The capacitor element is provided on the substrate. The metal cap is coupled to the substrate, covers the capacitor element and is electrically conducted to the substrate. A cathode of the capacitor element is electrically conducted to the substrate.

A solid electrolytic capacity has an anode foilhaving dielectric oxide layerformed on surface thereof, a cathode foilhaving whiskersthat are formed on surface thereof and hold carbide grains, a separator paperand solid electrolytic layersformed of a conducting polymer. The anode foiland the cathode foilwere rolled together across the separator paper. The solid electrolytic layersare formed between the anode foiland the cathode foil. Thickness of a layer where the whiskers 18 hold the carbide grainsis 1 &#x3bc;m to 5 &#x3bc;m. A method of manufacturing a solid electrolytic capacitor having steps of generating whiskers on surface of a cathode foil after coating carbide grains on the surface of the cathode foil and drying the carbide grains, rolling the cathode foil and an anode foil having dielectric oxide layer formed on surface thereof across a separator, impregnating polymerizable monomers and an oxidizing reagent into the separator, polymerizing the polymerizable monomers and forming solid electrolyte layers between the cathode foil and the anode foil.

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Sannohe, Japan

Minoru Funahashi