Showa Denko K.k.

Showa Denko Kabushiki Kaisha

Murata Manufacturing Co., Ltd.

Hiroshi Nitoh

Atsushi Sakai

Yuji Furuta

Toshihiro Okabe

Ryuji Monden

Koro Shirane

Hideki Ohata

Wataru Minamida

Takashi Ichimura

Kenji Ishii

Naoki Kawamura

Hideki Central Research Laboratory Showa Ohata

Koro Central Research Laboratory Showa Shirane

The present invention relates to an apparatus for producing a comb-like capacitor element member including a guide member and a plurality of rectangular metal foil pieces bonded to the guide member, comprising an automatic feed mechanism for feeding tape-like metal foil by a constant length toward the guide member, a bonding mechanism for bonding the metal foil to the guide member, and a cutting mechanism for cutting the bonded metal foil. According to the apparatus of the present invention, a comb-like capacitor element member having a plurality of rectangular metal foil pieces bonded can be produced efficiently, by bonding the elongated tape-like metal foil without damaging it.

Apparatus for producing capacitor element member

The present invention relates to an apparatus for producing a comb-like capacitor element member including a guide member and a plurality of rectangular metal foil pieces bonded to the guide member, comprising an automatic feed mechanism for feeding tape-like foil by a constant lenght toward the guide member, a bonding mechanism for bonding the metal foil to the guide member, and a cutting mechanism for cutting the bonded metal foil. According to the apparatus of the present invention, a comb-like capacitor element member having a plurality of rectangular metal foil pieces bonded can be produced efficiently, by bonding the elongated tape-like metal foil without damaging it.

The present invention relates to a solid electrolytic capacitor having a masking structure in which the insulation between the anode part and the cathode part can be ensured without fail, to its production method, to a method for coating a masking agent on a solid electrolytic capacitor substrate, and to apparatus therefore. According to the present invention, the masking material covers the dielectric film on the metal material having valve action and sufficiently infiltrates into the core metal made of a metal having valve action while the solid electrolyte is masked by the masking material without fail, so that a solid electrolytic capacitor can be produced that has a reduced leakage current and a reduced stress generated at the reflow treatment or the like.

Solid electrolytic capacitor and method for producing the same

Solid electrolytic capacitor and method of producing the same

The present invention relates to a solid electrolytic capacitor having a masking structure in which the insulation between the anode part and the cathode part can be ensured without fail, to its production method, to a method for coating a masking agent on a solid electrolytic capacitor substrate, and to an apparatus therefor. According to the present invention, the masking material covers the dielectric film on the metal material having valve action and sufficiently infiltrates into the core metal made of a metal having valve action while the solid electrolyte is masked by the masking material without fail, so that a solid electrolytic capacitor can be produced that has a reduced leakage current and a reduced stress generated at the reflow treatment or the like.

A solid electrolytic capacitor is obtained by mounting a plurality of single plate capacitor elements within a chip by employing a stacking structure such as parallel stacking, opposing stacking, each layer-opposing stacking or closest stacking. As a result, a compact and high-capacitance element can be easily manufactured. The single plate capacitor element is preferably an element having an unfolded fan-like shape.

Solid electrolytic multilayer capacitor

A solid electrolytic capacitor comprising a capacitor element comprising a valve-acting metal substrate having on the surface thereof a dielectric film and a solid electrolytic layer provided on the dielectric film, the capacitor element provided with lead wires (lead frames), in which the bonding structure between the capacitor element and the lead frames is improved. The solid electrolytic capacitor has high strength at the bonded portion between the capacitor element and the lead frames and has excellent heat resistance and is highly reliable. Also, a method for manufacturing such a solid electrolytic capacitor is disclosed.

Solid electrolytic capacitor and manufacturing method thereof

The present invention provides a solid electrolytic multilayer capacitor excellent in yield and capability, and provides a monolayer capacitor element for use in the manufacture of the solid electrolytic multilayer capacitor. In the multilayer solid electrolyte capacitor of the present invention, a solid electrolytic multilayer capacitor,in which a plurality of monolayer capacitor elements,are stacked such that the anode areas,aligned in the same direction are stacked and bonded onto a lead frame,on the anode side and the cathode areas are stacked and bonded onto a lead frame,on the cathode side so as to have an unfolded fan shape widening toward the distal end of the cathode area from the anode area,side, to provide a multilayer capacitor element,and the periphery of the multilayer capacitor element,that are covered and sealed with an armoring resin,. The monolayer capacitor element,preferably has a constitution such that the end part of the anode substrate,having thereon a dielectric oxide layer,worked out to an anode area,, the cathode area,is formed by providing a solid electrolyte layer,on the dielectric oxide layer,in the area exclusive of the anode area,and an electrically conducting layers,and,on the solid electrolyte layer,, and the thickness S,at the distal end of the cathode area is larger than the thickness S,at the base part of the cathode area.

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Nagano, Japan

Hiroshi Nitoh