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Laminated coil parts and production thereof

A coil component, layered technology, applied in coil manufacturing, transformer/inductor components, inductor/transformer/magnet manufacturing, etc., can solve the problems of high conductor resistance, rising cost, complex manufacturing process, etc., and reduce conductor resistance. Effect

Inactive Publication Date: 2004-11-10
MURATA MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, as described above, the thickness of the electrode (coil pattern (internal electrode) 55 after firing) formed by screen printing conductive paste and firing (the fired coil pattern (internal electrode) 55) is only about 20 μm at most, and the thickness is small. The coil 52 ( Figure 9 ) of the conventional laminated coil components, it is difficult to fully adapt to large currents due to the large conductor resistance
[0005] However, as a method of reducing the conductor resistance, for example, it is conceivable to laminate the same coil pattern 55 in multiple layers to increase the electrode thickness, but this method has the following problems: The number of stacked layers will not only lead to an increase in the size of the product, but also complicate the manufacturing process, resulting in an increase in cost

Method used

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  • Laminated coil parts and production thereof
  • Laminated coil parts and production thereof
  • Laminated coil parts and production thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] figure 1 It is a perspective view showing the appearance of a laminated inductor coil in one embodiment (Embodiment 1) of the present invention, figure 2 It is an exploded perspective view showing the laminate constituting the laminated inductor coil.

[0043] Such as figure 1 As shown, the structure of the laminated inductor coil in this embodiment 1 is: inside the element (laminated body) 1, a laminated coil 2 is provided around the central axis of the coil, so that the central axis is aligned with the stacking direction A of the element 1. Orthogonal; and, on both end faces of the element 1 , external electrodes 3 for input and output conducting to both ends of the coil 2 are provided.

[0044] Furthermore, inside the element 1, a plurality of through-holes 4 are provided at predetermined planar positions (positions viewed from the stacking direction) such that their axes are along the stacking direction A. As shown in FIG. In addition, in the inside of the ele...

Embodiment 2

[0071] Figure 4 It is a perspective view showing the appearance of a laminated inductor coil in another embodiment (Embodiment 2) of the present invention, Figure 5 It is an exploded perspective view showing the laminate constituting the laminated inductor coil.

[0072] In the laminated inductor coil of the second embodiment, the lead-out electrode 6 of the multilayer structure is provided substantially in the center of the stacking direction A of the element 1 (laminated body), parallel to the stacking surface (orthogonal to the stacking direction A). direction).

[0073] In addition, other configurations including the overall configuration of the multilayer inductor coil of the second embodiment are the same as those of the multilayer inductor coil of the first embodiment described above, so descriptions thereof are omitted to avoid repetition. In addition, in Figure 4 and Figure 5 in, right with figure 1 and figure 2 The same symbols are used for the same or eq...

Embodiment 3

[0083] Figure 6 It is a perspective view showing the appearance of a laminated LC composite part in another example (Example 3) of the present invention.

[0084] In the laminated LC composite part of the present embodiment 3, a pair of external electrodes 40 for obtaining capacitance are provided opposite to the coil 2 (mainly the through hole 4), and the electrodes are formed from the central parts of the two side surfaces of the laminated body, that is, the element 1. , extended to the upper and lower sides.

[0085] That is, the multilayer LC composite part of the third embodiment is obtained by providing the external electrode 40 for obtaining capacitance on the element 1 constituting the multilayer inductor described in the first embodiment. The capacitance acquisition external electrode 40 is provided to face the through hole 4 which mainly constitutes the coil 2 .

[0086] In addition, similar to the external electrodes for input and output, the external electrodes ...

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Abstract

The present invention provides a laminated coil part. A coil 2, the center axis of which crosses the direction of a lamination A at right angles, is formed by respectively connecting one and the other side end sections of a prescribed via hole of a plurality of via holes 4 provided in the element 1 (laminate), in the direction of lamination A, by belt-like connecting electrodes 5 having plural-layer structures and provided in the element 1, in parallel with the laminating surface (in the direction perpendicular to the direction of lamination A). At the same time, the coil 2 is connected to an external electrode 3 for inputting and outputting through a lead-out electrode 6, which has a plural-layer structure and are provided in parallel with the lamination surface. As a result, the structure is miniaturized, the conductor resistance is reduced and the cost is reduced.

Description

technical field [0001] The present invention relates to a laminated coil component and a manufacturing method thereof, and more specifically, to a laminated coil component such as a laminated inductor coil and a laminated LC composite component in which a coil having a laminated structure is provided in a laminated body, and to the manufacture thereof method. Background technique [0002] As a representative type of laminated coil components, there is a laminated inductor coil. Among such laminated inductor coils, there are, for example, Figure 9 A laminated inductor coil of the structure shown. That is, the structure of the laminated inductive coil is: inside the element 51, a laminated coil 52 that is consistent with the lamination direction A of the laminated body element 51 and surrounds the coil central axis is provided; External electrodes 53 for input and output are provided on both end surfaces of the end element 51 . [0003] Usually, such as Figure 10 As shown...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F41/04H01F17/00H01F27/25H01F41/02H03H7/075
CPCH01F17/0013H01F27/2804H01F41/041H01F2017/002H01F2027/2809
Inventor 山本高弘西井基荒川元
Owner MURATA MFG CO LTD
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