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Laminated solid electrolytic capacitor and laminated transmission line parts

A technology of solid electrolysis and capacitors, applied in solid electrolytic capacitors, electrolytic capacitors, multilayer capacitors, etc., can solve problems such as reducing component characteristics and deformation of anode parts.

Inactive Publication Date: 2004-09-08
TOKIN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in the conventional lamination technology, since the anode portion of each element is connected to the lead frame, there is a problem that when the number of lamination elements increases, the outermost anode portion of the element is greatly deformed, thereby degrading the element characteristics, Therefore, the maximum number of stacked elements is 2

Method used

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  • Laminated solid electrolytic capacitor and laminated transmission line parts
  • Laminated solid electrolytic capacitor and laminated transmission line parts
  • Laminated solid electrolytic capacitor and laminated transmission line parts

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0044] Figure 4A is a cross-sectional view of a transmission line element 29 having an appearance of substantially flat plate shape, viewed in a section through the two anode portions of the transmission line element 29 and perpendicular to the main plane of the transmission line element 29 . A metal plate 31 is connected to each anode portion of the transmission line element 29 by ultrasonic welding, resistance welding, or the like so as to sandwich the anode portion therebetween. exist Figure 4A , the same reference numerals indicate the prior art shown in the figure 1 with 2 The parts in are basically the same as those parts.

[0045] Figure 4B is a cross-sectional view of a laminated transmission line element 33 with a rectangular parallelepiped appearance, and the cross-sectional view is obtained from Figure 4A The profile is the same as seen in the profile.

[0046] exist Figure 4B In , four transmission line elements 29 are stacked in layers. Although the n...

no. 2 approach

[0057] A second preferred embodiment of the present invention will be described below.

[0058] refer to Figure 10A , metal plating layers 59 are formed on both main surfaces of each anode portion of the transmission line element 61 .

[0059] refer to Figure 10B , four transmission line elements 61 are stacked in layers, thereby forming a stacked transmission line element 63 . Although the number of transmission line elements 61 is set to four in the present embodiment for the purpose of explanation, this number may be set to a value greater than four.

[0060] The cathode portions 19 of adjacent upper and lower transmission line elements 61 are connected to each other with the conductive adhesive 25 interposed therebetween. At the lowest level, each anode terminal 35 in the form of a metal plate is provided at both ends, and a cathode terminal 37 in the form of a metal plate is provided in the center. Cathode terminal 37 is connected to cathode portion 19 of lowest tra...

no. 3 approach

[0065] A third preferred embodiment of the present invention will be described below.

[0066] refer to Figure 11A , the conductive paste layer 65 is formed on both main surfaces of each anode portion of the transmission line element 67 .

[0067] refer to Figure 11B , four transmission line elements 67 are stacked in layers to form a stacked transmission line element 69 . Although the number of transmission line elements 67 is set to four in the present embodiment for the purpose of explanation, this number may be set to a value greater than four.

[0068] The cathode portions 19 of adjacent upper and lower transmission line elements 67 are connected to each other with the conductive adhesive 25 interposed therebetween. At the lowest level, each anode terminal 35 in the form of a metal plate is provided at both ends, and a cathode terminal 37 in the form of a metal plate is provided in the center. Cathode terminal 37 is connected to cathode portion 19 of lowest transmis...

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PUM

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Abstract

In a stacked solid electrolytic capacitor or a stacked transmission line element, anode portions of adjacent elements are electrically and mechanically connected to each other by the use of connecting members each in the form of a conductive adhesive or solderable metal, via metal plates connected to the anode portions so as to sandwich therebetween the anode portions, respectively, from the upper and lower surfaces thereof. On the other hand, cathode portions of the adjacent elements are electrically and mechanically connected to each other by a conductive adhesive, or are electrically and mechanically connected to each other by the use of adhesive insulating sheets each having a hollowed portion and a conductive adhesive filled in the hollowed portions, or are adhered to each other by adhesive insulating sheets, then electrically connected to each other by a conductive adhesive applied onto side surfaces of the cathode portions.

Description

technical field [0001] The present invention relates to a laminated solid electrolytic capacitor and a laminated transmission line component. Background technique [0002] Conventional solid electrolytic capacitors have a valve metal body at their central portion. A valve metal body is formed by roughening the surface of a metal plate made of a metal element substance (such as aluminum, tantalum, niobium, titanium or an alloy thereof) having a valve function, or having a valve function by sintering. The metal plate with the function and the metal powder with the valve function are integrated to form the valve metal body. [0003] The solid electrolytic capacitor element has a structure in which an oxide film is formed on the surface of the valve metal body, then an insulating resin is formed on the oxide film to divide the area into two areas, and then a solid electrolytic layer→graphite layer→silver paste layer, or A solid electrolytic layer→graphite layer→metal plating l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G4/30H01G4/228H01G9/00H01G9/012H01G9/04H01G9/042H01G9/14H01G9/15
CPCH01G9/15Y10T29/417H01G9/26H01G9/14H01G9/042H01G9/012H01G4/30
Inventor 荒井智次斋木义彦户井田刚猪井隆之
Owner TOKIN CORP