JP2909122B2 - Laminated composite parts - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a multilayer composite component in which a multilayer inductor and a capacitor are integrally formed.

(Prior art)

With the demand for smaller and thinner electronic components, multilayer inductors have been used in the field of inductors, in which a conductor pattern is formed by printing in an insulative ceramic layer instead of winding a wire. ing. In addition, LC composite parts in which this and a capacitor are integrally formed are also used. Among them, a laminated composite component as shown in FIG. 3 is used to realize a distributed multiplier circuit. In this example, a conductor pattern 56 and a conductor pattern 61, which are superposed in the lamination direction and circumnavigate in the laminated body 50 of the magnetic body, are arranged to face each other in the horizontal direction. A capacitance is formed between the conductor pattern 56 and the conductor pattern 61.

〔Task〕

In the multilayer composite component as described above, the conductor pattern is as thin as tens of μm, and the facing area in the horizontal direction is small.
It is difficult to obtain sufficient capacity.

The present invention provides a laminated composite component capable of forming a desired capacity.

[Means for solving the problem]

The present invention solves the above-described problem by arranging the conductor patterns to face each other in the stacking direction to increase the facing area.

That is, two sets of a plurality of parallel conductor patterns formed with the insulator layer interposed therebetween are connected by conductors filled in through holes formed in the insulator layer, and overlap in a direction perpendicular to the laminating direction. A laminated composite component provided with a coil pattern of a conductor that circulates around and is connected to the parallel conductor pattern via a through hole formed in an insulator layer different from the insulator layer, and is connected to the parallel conductor. It is characterized by comprising a second conductor pattern facing the pattern and a conductor pattern forming a capacitor facing the second conductor pattern.

[Action]

Since the conductor patterns face each other in the stacking direction, the area of the conductor patterns facing the coil-forming conductor patterns increases, and a large capacitance can be obtained.

This allows three terminals suitable for filters, delay lines, etc.
An LC element is obtained.

〔Example〕

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view showing an embodiment of the present invention. A slurry is formed by adding a binder to a magnetic ceramic such as ferrite, and a conductive pattern 36 of the same length is formed by printing a conductive paste of the same length in parallel on the surface of the green sheet 31 having a predetermined thickness by a doctor blade method or the like. . The starting end and the ending of the conductor pattern are drawn out and formed on two opposing end surfaces.

The magnetic sheet 32 is placed on this, but the magnetic sheet 32
A parallel conductor pattern 37 is formed on the upper surface of the substrate. This conductor pattern 37 is also parallel and has the same length, but the direction of formation is shifted from the conductor pattern 36, and one end of the conductor pattern 37 is connected to one conductor pattern 36, and another conductor pattern 37 is formed.
It is arranged to be connected to 37 at the other end. As a result, the conductor pattern 36 and the conductor pattern 37 were connected to the adjacent conductor pattern at one end, and provided a conductor pattern that wrapped around in a direction perpendicular to the lamination direction of the magnetic sheets. A coil is obtained.

In order to connect the conductor pattern 36 and the conductor pattern 37, a through hole is formed in a portion of the magnetic material sheet corresponding to the end of the conductor pattern 37, and the conductor 38 is filled before lamination. The conductor patterns connect the upper and lower conductor patterns.

An insulator is laminated on the upper surface of the magnetic sheet 32, but one conductor pattern 39 for a capacitor is formed on the upper surface of the insulator sheet 33, and the conductor 40 filled in the through hole is used as one point of the conductor pattern 37. Connected. The conductor pattern 39 opposes the conductor pattern 41 of the sheet 34 to obtain a capacitance.

A laminated composite component is obtained through the steps of lamination, pressure bonding, and firing. In this case, as shown in FIG. 2, a tap is pulled out of the coil, and a capacitor is connected to the tap.
A circuit is obtained.

The material of the sheet is not limited to a magnetic material, and a dielectric material can be used. When a high inductance is required, a magnetic material having a high magnetic permeability may be used, or a material having a high dielectric constant may be used for the capacitor portion in order to increase the capacitance. And use these materials properly,
It is also possible to integrate them. However, if the shrinkage ratio during firing is adjusted, it is advantageous in terms of yield and reliability.

Also, a large capacitance can be obtained by forming capacitance forming electrodes on both sides of the coil pattern. Alternatively, as a structure in which a plurality of taps are pulled out from a coil, an insulator sheet provided with a plurality of divided conductor patterns is stacked on the upper surface to form a capacitor in parallel, and a filter, a delay line, and the like are configured with one element. It is also possible.

〔effect〕

According to the present invention, a large capacitance can be formed in the LC composite component. Further, by changing the method of laminating the sheets, it is possible to obtain an arbitrary capacity.

Furthermore, by changing the pattern of the through hole, the circuit configuration itself can be changed, and LC composite parts for a wide range of applications can be obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention, FIG. 2 is an equivalent circuit diagram thereof, and FIG. 3 is a plan view of a conventional laminated composite component. 31-35: Insulator sheet 36, 37, 39, 41: Conductor pattern 38, 40: Conductor (filled in through hole)

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H01G 4/00-4/40 H01F 15/00 H01F 17/00

Claims (2)

(57) [Claims] 1. A method according to claim 1, wherein two sets of a plurality of parallel conductor patterns formed with the insulator layer interposed therebetween are connected by conductors filled in through holes formed in the insulator layer, and are perpendicular to the laminating direction. A laminated composite component having a coil pattern of a conductor that circulates in a direction overlapping and connected to the parallel conductor pattern through a through hole formed in an insulator layer different from the insulator layer; A laminated composite component comprising: a second conductor pattern facing a parallel conductor pattern; and a conductor pattern facing a capacitance of the second conductor pattern. 2. The laminated composite component according to claim 1, wherein the intermediate portion of the parallel conductor pattern and the second conductor pattern are connected by a conductor filled in a through hole.