Abstract:
PROBLEM TO BE SOLVED: To provide an electrochemical device capable of improving fixing strength between an electrode pad and a lead, and also to provide a circuit board.SOLUTION: A lead 3 of an electrochemical device includes a lead body 3A including Al and a metal thin film 3a which is provided and folded at the tip of the lead body 3A. This metal thin film 3a includes a thin film body 3a1 containing Ni and a plated layer 3a2 covering at least an external surface of the folded thin film body 3a1 and containing Sn. A specific region on an inner surface of the folded thin film body 3a1 and an upper face of the lead body 3A come into direct contact with and welded to each other in a predetermined region R3U without the intermediary of the plated layer 3a2.
Abstract:
PROBLEM TO BE SOLVED: To provide an electrochemical device capable of improving fixing strength between an electrode pad and a lead, and also to provide a circuit board.SOLUTION: A lead 3 of an electrochemical device includes a lead body 3A including Al and a metal thin film 3a which is provided and folded at the tip of the lead body 3A. This metal thin film 3a includes a thin film body 3a1 containing Ni and a plated layer 3a2 covering at least an external surface of the folded thin film body 3a1 and containing Sn. A specific region on an inner surface of the folded thin film body 3a1 and a surface of the lead body 3A come into direct contact with and welded to each other in predetermined regions R3U and R3L without the intermediary of the plated layer 3a2.
Abstract:
PROBLEM TO BE SOLVED: To provide an electrochemical device enabling improvement in fixing strength between an electrode pad and a lead.SOLUTION: In an electrochemical device, a lead 3 includes: a lead body 3A including Al; a metal thin film 3a which is provided at the tip of the lead body 3A, folded so as to cover a lower face and side faces of the lead body 3A, and has a predetermined region R3L welded to the lead body 3A. The metal thin film 3a includes a thin film body 3a1 containing Ni, and a plated layer 3a2 which covers at least an external surface of the folded thin film body 3a1 and contains Sn. The specific region R3L on an inner surface of the folded thin film body 3a1 and a surface of the lead body 3A directly come into contact with and welded to each other in the predetermined region R3L without the intermediary of the plated layer 3a2.
Abstract:
PROBLEM TO BE SOLVED: To provide an electrochemical device capable of improving fixing strength between an electrode pad and a lead.SOLUTION: In an electrochemical device, a lead 3 includes a lead body 3A including Al and a metal thin film 3a which is provided at the tip of the lead body 3A, folded so that a lower face and side faces of the lead body 3A are covered, and has a predetermined region welded to the lead body 3A. The metal thin film 3a includes a thin film body containing Ni, and a plated layer which covers at least an external surface of the folded thin film body and contains Sn. The specific region on an inner surface of the folded thin film body and a surface of the lead body 3A come into direct contact with and welded to each other in the predetermined region without the intermediary of the plated layer. The lead 3 is bent so as to be inclined diagonally downward from a position in contact with an exterior body 1.
Abstract:
PROBLEM TO BE SOLVED: To provide a multilayer electrolytic capacitor capable of preventing connection strength between a lead and an electrode foil from decreasing.SOLUTION: The multilayer electrolytic capacitor 1 includes an electrode laminate 2 having an anode foil 4 and a cathode foil 5 laminated alternately with a separator 6 interposed, and leads 13, 14. The leads 13, 14 are each formed by forming bent belt-like aluminum foils by bending linear belt-like aluminum foils so that they extend in a vertical direction, and bending the bent belt-like aluminum foils vertically in the state so that bent parts of the bent belt-like aluminum foils are raised with respect to unbent parts. The leads 13, 14 have bent parts 13b, 14b extending in the laminating direction of the electrode laminate 2, and the bent parts 13b, 14b are joined to side faces 10b, 12b of lead-out parts 10, 12 of the anode foil 4 and cathode foil 5 by laser welding etc.
Abstract:
PROBLEM TO BE SOLVED: To provide a manufacturing method of a low-cost solid electrolytic capacitor having improved uniformity of thickness. SOLUTION: In a process for forming a solid polymer electrolyte layer 14a in an elemental intermediate body M1, the elemental intermediate body M1 is dipped into a liquid tank 30 for storing a polymerizing liquid P1 and is pulled out, thus adhering the polymerizing liquid P1 onto the element intermediate M1. An interval d1 between a first inner wall surface 30d and a second inner wall surface 30e of the liquid tank 30 is very narrow and is slightly larger than the thickness of the elemental intermediate body M1. Hence, the polymerizing liquid P1 in the liquid tank 30 has large surface tension. As the surface tension becomes larger, the polymerizing liquid P1 adhering to the elemental intermediate body M1 is pulled strongly toward the liquid surface, when the elemental intermediate body M1 is pulled out from the liquid surface. As a result; and while the element intermediate M1 is being pulled from the liquid surface, the surplus polymerizing liquid P1, adhering to the elemental intermediate body M1, can be pulled back to the inside of the liquid tank 30 by the surface tension. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a manufacturing method of a solid electrolytic capacitor having satisfactory uniformity in thickness and small variations in the characteristics. SOLUTION: A liquid tank unit 100 is prepared where the unit has a liquid tank 26 and a pair of moving members 27. A polymerizing liquid P1 that becomes a solid polymer electrolyte layer is stored in the liquid tank 26. The pair of moving members 27 comes into contact with the liquid surface of the polymerizing liquid P1, and they can freely approach or separate to/from each other. When an element intermediate M1 dipped into the liquid tank 26 is pulled from an area between the pair of moving members 27, the pair of moving members 27 will be approaching closely, and the interval d2 becomes very narrow. As a result, the area of the liquid surface of the polymerizing liquid P1 between the pair of moving members 27 becomes small, and accordingly, the surface tension of the polymerizing liquid P1 between the pair of moving members 27 becomes large, and the surplus polymerizing liquid P1, adhering to the element intermediate M1 can be drawn back into the liquid tank 26 due to surface tension. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a solid electrolytic capacitor for improved ESR characteristics. SOLUTION: The solid electrolytic capacitor 1 has a plurality of capacitor elements 2 stacked together. The capacitor element 2 comprises a positive electrode part 4, a negative electrode part 5, and a resist part 6 which electrically insulates the positive electrode part 4 from the negative electrode part 5. A conductive adhesive 13 and a conductive paste part 14 which electrically connect the negative electrode parts 5 of the capacitor element 2 together are interposed between the negative electrode parts 5 of the capacitor elements 2. The conductive adhesive 13 is so formed as to avoid the region corresponding to the ends on the negative electrode parts 5 side of the capacitor elements 2. The conductive paste part 14 is so adjoined to the conductive adhesive 13 as to cover the ends of the negative electrode parts 5 side of the capacitor elements 2. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a manufacturing method of an electrolytic capacitor for forming an electrolyte layer with a uniform thickness by a simple method. SOLUTION: The electrolytic capacitor comprises a valve metal substrate; a dielectric layer formed on the valve metal substrate; a solid electrolyte layer formed on the dielectric layer; and a conductive layer formed on the solid electrolyte layer. Then, the electrolyte layer in the electrolytic capacitor contains 150-1,000 ppm iron. COPYRIGHT: (C)2007,JPO&INPIT