JP2003197429A - Laminated component and manufacturing method thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a laminated component that has a high impedance or inductance and a low DC resistance, and is suitable for large-current use, and to obtain a method for manufacturing the laminated component. <P>SOLUTION: The manufacturing method of laminated components includes a first print process for repeating a plurality of processes for printing a conductive material paste by a pattern A, a second print process for printing a magnetic material layer having a window section at a specific position, a third printing process for printing the conductive material paste by a patter B and for repeating a plurality of processes for printing the conductive material paste by the pattern B, a fourth printing process for printing the magnetic material layer having the window section for connecting the conductor pattern B to a conductor pattern C to be printed in a fifth printing process at a specific position, a fifth printing process for repeating a plurality of processes for printing the conductive paste by the pattern C, a sixth printing process for printing the magnetic material layer having the window section at a specific position, a seventh printing process for repeating a plurality of processes for printing the conductive paste by a pattern D and for printing a conductive pattern D, and a process for printing the magnetic material layer the uppermost section to obtain a laminated component. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a laminated component,
In particular, the present invention relates to a laminated component suitable for applications in which a relatively large current flows and a manufacturing method thereof.

[0002]

2. Description of the Related Art As a noise countermeasure component, noise at a target frequency is shielded by impedance characteristics or inductance characteristics to prevent EMI. That is, it is common practice to install noise countermeasure components in series with the signal system to block noise. Also, for the power line system of active elements such as power amplifiers, noise countermeasure parts are mounted in series, and EMI countermeasures such as suppressing leakage of signal frequency noise from the active elements to the power line are taken. It is being appreciated.

Electronic parts represented by noise suppression parts are
The laminated type is the mainstream, and the laminated type impedance element or inductance element used in the form of being mounted on a printed wiring board or the like is usually composed of a magnetic layer made of soft magnetic ferrite powder and a binder, and a conductive powder. It is formed by alternately laminating conductor layers made of a binder by a screen printing method, providing spiral coil-shaped conductors with a uniform pitch in a magnetic body, and then simultaneously sintering.

FIG. 5 is an explanatory view of a conventional method for manufacturing a laminated component. FIG. 5 (a) shows a magnetic layer serving as the bottom,
5 (b) shows a conductor layer, FIG. 5 (c) shows a window-formed magnetic layer, and FIG. 5 (d) shows a conductor layer.
(E) shows an upper magnetic layer.

[0005]

The laminated impedance element is required to have a higher impedance and can be used for applications in which a larger current flows.
Similarly, a laminated inductance element that can be used for a larger current flow and has a higher inductance is required.

Therefore, there is a demand for a laminated component having low DC resistance and high impedance or inductance. In the conventional laminated impedance and inductance element, the direct current resistance can be lowered by widening the width of the inner conductor. However, there has been a problem that the impedance is lowered as the direct current resistance is lowered, and the impedance or the inductance cannot be increased. As another means, there is a method of thickening the inner conductor, which can lower the DC resistance without lowering the impedance or the inductance, but only the conductor can be thickened to thicken the inner conductor. Since they cannot be laminated by screen printing, it is very difficult to obtain thick impedance and inductance elements of the inner conductor.

It is an object of the present invention to provide a laminated component having a high impedance or inductance and a low DC resistance, which is suitable for a large current application and a method for manufacturing the same.

[0008]

The present invention relates to a laminated component in which a magnetic layer and a conductor layer are laminated and co-fired, and a spiral coil-shaped conductor is provided in the magnetic substance, wherein the magnetic layer is The conductor layer is a pattern in which a conductor paste composed of conductive powder and a binder is printed on the conductor pattern A to form a spiral coil conductor, and then the magnetic substance slurry is reversed from the conductor pattern A. A first printing step of repeating a plurality of steps of printing and again printing the conductor paste with the pattern A; and printing the conductor paste with the pattern B forming a spiral coiled conductor conductor in combination with the first printing step, Next, the magnetic slurry is printed in a pattern that is the reverse of the conductor pattern B, and a third printing step in which the conductor paste is printed again in the pattern B is repeated a plurality of times. A pattern C for forming a spiral coil conductor conductor in combination with a second printing step of printing a magnetic layer having a window portion at a predetermined position for connecting the conductor pattern B to be printed in the step and the first and third printing steps. Printing the conductor paste with, then printing the magnetic slurry in a pattern that is the reverse of the conductor pattern C, and again printing the conductor paste with the pattern C, a fifth printing step,
A spiral coil combining the fourth printing step of printing a magnetic layer having a window portion at a predetermined position for connecting the conductor pattern B and the conductor pattern C printed in the fifth printing step with the first, third, and fifth printing steps. A plurality of steps of printing the conductor paste with the pattern D forming the conductor conductor, then printing the magnetic slurry on the conductor pattern D in a pattern that is the reverse of the conductor pattern D, and printing the conductor pattern D again. In the seventh printing step, a seventh printing step that repeats a number of times, a sixth printing step that prints a magnetic layer having a window portion at a predetermined position that connects the conductor pattern C and the conductor pattern D that is printed in the seventh printing step, and the seventh printing step A step of printing a magnetic material layer on the uppermost part so as to cover the printed conductor layer to obtain a laminated body, and firing the obtained laminated body to obtain a sintered body having a spiral coil-shaped conductor therein Process and the sintered body On both end faces of the eighth laminate device formed by a printing process of forming the external electrodes connected to the ends of the helically coiled conductor.

Further, according to the present invention, there is provided a method of manufacturing a laminated component in which a spiral coil-shaped conductor is provided in a magnetic material by laminating a magnetic material layer and a conductive material layer and co-firing, wherein the manufacturing method is , A conductor paste composed of a conductive powder and a binder is printed on a conductor pattern A to form a spiral coil conductor, and then a magnetic substance slurry is printed on the conductor pattern A in an inverted pattern, and then on the pattern A again. In the first printing step in which the step of printing the conductor paste is repeated a plurality of times, and the conductor paste is printed in a pattern B which forms a spiral coiled conductor conductor in combination with the first printing step. A third printing step in which a pattern in which the conductor pattern B is reversed and a conductor paste is printed again in the pattern B are repeated a plurality of times;
And a second printing step of printing a magnetic layer having a window portion for connecting the conductor pattern B printed in the third printing step at a predetermined position, and a spiral coiled conductor conductor by combining the first and third printing steps. A fifth printing step of repeating a plurality of steps of printing the conductor paste with the pattern C to be formed, then printing the magnetic slurry with a pattern that is the reverse of the conductor pattern C, and printing the conductor paste with the pattern C again; A spiral coil shape is formed by combining a fourth printing step of printing a magnetic layer having a window portion at a predetermined position for connecting the pattern B and the conductor pattern C printed in the fifth printing step with the first, third, and fifth printing steps. The conductor paste is printed on the pattern D forming the conductor conductor, and then the conductor slurry is printed on the conductor pattern D in a pattern that is the reverse of the conductor pattern D, and the conductor pattern D is printed again. A seventh printing step in which the above steps are repeated a plurality of times, a sixth printing step in which a magnetic layer having a window portion for connecting the conductor pattern C and the conductor pattern D printed in the seventh printing step at a predetermined position is printed, 7. A step of printing a magnetic material layer on the uppermost part so as to cover the conductor layer printed in the printing step to obtain a laminated body, and firing the obtained laminated body to have a spiral coil-shaped conductor inside. It is a method for manufacturing a laminated component, which includes a step of obtaining a united body and an eighth printing step of forming external electrodes connected to the ends of the spiral coil-shaped conductor on both end faces of the sintered body.

[0010]

In the present invention, since a plurality of laminated conductor layers are baked into one conductor, a conductor having a large cross-sectional area is formed. Further, since the conductor layers are directly laminated, the direct current resistance is reduced without lowering the impedance. Furthermore, repeating the third to fifth printing steps,
Impedance or inductance can be increased by increasing the number of turns of the spiral coil conductor. That is, the DC resistance value and the impedance value can be easily set by increasing or decreasing the number of conductor layers directly laminated and the number of turns of the spiral coil conductor. Also, the formation of thick internal conductors, which was difficult with the screen printing method, was
By printing the magnetic layer having a pattern that is the reverse of the conductor pattern, it can be easily formed by screen printing.

[0011]

EXAMPLE A laminated component and a method for manufacturing the same according to an example of the present invention will be described below.

FIG. 1 is an explanatory view of a method of manufacturing a laminated component according to an embodiment of the present invention. First, as shown in FIG.
The magnetic material layer 1 is formed by printing a magnetic material slurry containing a soft magnetic ferrite powder and a binder in advance a plurality of times. Next, the conductive paste 2 shown in FIG. 1B is printed on the magnetic layer 1. Next, the magnetic layer 3 having the same gap area 4 as the conductor pattern A of FIG. 1B shown in FIG. 1C is printed. Next, the conductive paste 5 shown in FIG. 2D is printed. The above steps shown in FIGS. 1B to 1D are repeated a plurality of times.

Next, the magnetic layer 6 having the gap region 7 shown in FIG. 2 (e) is printed. Next, the conductive paste 8 shown in FIG. 1 (f) is printed.

Next, a magnetic layer 9 having a gap region 10 of the same shape as the conductor pattern B of FIG. 1F shown in FIG. 1G is printed. Next, the conductive paste 11 shown in FIG. 1 (h) is printed. The steps shown in FIGS. 1F to 1H are repeated a plurality of times.

Next, the gap region 13 shown in FIG.
The magnetic material layer 12 is printed. Next, the conductive paste 14 shown in FIG. 1 (j) is printed. Next, the magnetic layer 15 having the gap region 16 of the same shape as the conductor pattern C of FIG. 1J shown in FIG. 2K is printed. Next, FIG.
The conductive paste 17 shown in (l) is printed. Figure 1 above
The steps from (j) to FIG. 1 (l) are repeated a plurality of times.

Next, the gap region 19 shown in FIG.
The magnetic material layer 18 having the above is printed. Next, the conductive paste 20 shown in FIG. 1 (n) is printed. Next, the magnetic layer 21 having the same gap region 22 as the conductor pattern D of FIG. 1 (n) shown in FIG. 2 (o) is printed.

Next, the conductive paste 23 shown in FIG.
To print. The steps shown in FIGS. 1 (n) to 1 (p) are repeated a plurality of times. The steps shown in FIGS. 1 (f) to 1 (l) are repeated a plurality of times, and as shown in FIG. 1 (q), the magnetic layer 24 is printed on the uppermost portion so as to cover the conductor layer. In addition, (b) (c) (d), (f) of FIG.
The order of (g) (h), (j) (k) (l) is (c)
You may print (g) and (k) first.

FIG. 2 is an explanatory view of a laminated body of laminated parts according to an embodiment of the present invention. 2A is an end view of the laminated body before sintering, and FIG. 2B is a top view of the laminated body before sintering. The laminate 25 shown in FIG. 2 can be obtained by the manufacturing method described above. In the laminated body 25, a laminated conductive paste 26a is formed by printing the conductive pastes 2 and 5 on one end surface.
However, the laminated conductive paste 26b formed by printing the conductive pastes 20 and 23 is exposed on the other end surface. By firing the laminated body 25 thus obtained, the spiral coiled conductors 27 having a uniform pitch are formed in the sintered body.
Is configured. Finally, external electrodes are formed so as to cover the end surfaces 28a and 28b of the spiral coil conductor 27.

FIG. 4 is an explanatory view of the laminated component of the embodiment of the present invention. In this way, the laminated component 29 shown in FIG. 4 is obtained. In FIG. 4, reference numerals 30a and 30b denote external electrodes. In the laminated component 29, the spiral coil-shaped conductor 27 shown in FIG. 4 is connected between the external electrodes 30a and 30b.

[0020]

According to the present invention, the cross-sectional area of the conductor can be easily increased simply by increasing the number of times the conductive paste having the same conductor pattern is printed, so that the DC resistance can be reduced without lowering the impedance or the inductance. It is possible to provide a laminated component and a method for manufacturing the same that are reduced. Furthermore, it is possible to achieve high impedance or high inductance simply by increasing the number of printings so that the number of turns of the spiral coil conductor increases.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a method for manufacturing a laminated component according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a laminated body of laminated components according to an embodiment of the present invention.
2A is an end view of the laminated body before sintering, and FIG. 2B is a top view of the laminated body before sintering.

FIG. 3 is an explanatory diagram after printing and firing of a laminated body of a laminated component of an example of the present invention.

FIG. 4 is an explanatory diagram of a laminated component according to an embodiment of the present invention.

FIG. 5 is an explanatory view of a conventional method for manufacturing a laminated component. Figure 5
5A is a diagram showing a magnetic layer serving as a bottom portion, FIG. 5B is a diagram showing a conductor layer, FIG. 5C is a diagram showing a magnetic layer with a window opened, and FIG. 5D. Shows a conductor layer, FIG. 5 (e)
[FIG. 3] is a diagram showing a magnetic layer serving as an upper portion.

[Explanation of symbols]

1,3,6,9,12,15,18,22,24 Magnetic layer 2,5,8,11,14,17,20,23 Conductor layer 4,7,10,16,19,22 Part 25 Laminated bodies 26a, 26b Laminated conductive paste 27 Spiral coil conductors 28a, 28b End face 29 Laminated parts 30a, 30b External electrodes

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Claims (2)

[Claims] 1. In a laminated component in which a magnetic layer and a conductor layer are laminated and co-fired, and a spiral coil conductor is provided in the magnetic body, the magnetic layer and the conductor layer are conductive. Conductor paste composed of a conductive powder and a binder is printed on the conductor pattern A to form a spiral coil conductor, then the magnetic substance slurry is printed on the conductor pattern A in the reverse pattern, and again on the pattern A. A first printing step in which a plurality of steps for printing a body paste are repeated, and a conductor paste is printed with a pattern B for forming a spiral coiled conductor conductor in combination with the first printing step, and then a magnetic material slurry is used as a conductor pattern. A third printing step in which a step of printing a pattern reverse to that of B and printing a conductor paste with the pattern B again is repeated, and a conductor pattern printed by the conductor pattern A and the third printing step. The conductor paste is applied in a pattern C for forming a spiral coil conductor conductor by combining the second printing step of printing a magnetic layer having a window portion connecting the terminals B at a predetermined position and the first and third printing steps. Printing, then printing the magnetic slurry with a pattern that is the reverse of the conductor pattern C, and again printing the conductor paste with the pattern C, a fifth printing step, and a conductor pattern B and a fifth printing step. A pattern D for forming a spiral coil-shaped conductor conductor in combination with a fourth printing step of printing a magnetic layer having a window portion for connecting a conductor pattern C to be printed at a predetermined position and the first, third, and fifth printing steps. Print the conductor paste with
Next, the magnetic slurry is printed on the conductor pattern D in an inverted pattern of the conductor pattern D, and the conductor pattern D is again printed.
A seventh printing step in which the step of printing a plurality of times is repeated, and a sixth step of printing a magnetic layer having a window portion at a predetermined position for connecting the conductor pattern C and the conductor pattern D printed in the seventh printing step
A printing step, a step of printing a magnetic layer on the uppermost part so as to cover the conductor layer printed in the seventh printing step to obtain a laminated body, and firing the obtained laminated body to form a spiral coil inside. And an eighth printing step of forming external electrodes connected to the ends of the spiral coil-shaped conductor on both end faces of the sintered body. And laminated parts. 2. A method for manufacturing a laminated component in which a spiral coil-shaped conductor is provided in a magnetic material by laminating a magnetic material layer and a conductor layer and co-firing the conductive powder. A conductor paste composed of a binder and a binder is printed on the conductor pattern A to form a spiral coil conductor, then the magnetic substance slurry is printed on the conductor pattern A in an inverted pattern, and again on the pattern A, the conductor paste is formed. A plurality of printing steps, and a pattern B for forming a spiral coil conductor conductor in combination with the first printing step, a conductor paste is printed, and then a magnetic slurry is used as a conductor pattern B. A third printing step of repeating a plurality of steps of printing with the inverted pattern and printing the conductor paste with the pattern B again, and a conductor pattern for printing with the conductor pattern A and the third printing step. A second printing step of printing a magnetic layer having a window portion at a predetermined position for connecting the cords B;
The conductor paste is printed with a pattern C that forms a spiral coil conductor conductor in combination with the printing process, then the magnetic substance slurry is printed with a pattern that is the reverse of the conductor pattern C, and the conductor paste is printed again with the pattern C. A fifth printing step in which a plurality of steps are repeated, a fourth printing step in which a magnetic layer having a window portion for connecting the conductor pattern B and the conductor pattern C printed in the fifth printing step at a predetermined position is printed, and the first printing step Printing the conductor paste with pattern D to form a spiral coil conductor conductor in combination with 3, 5 printing steps,
Next, the magnetic slurry is printed on the conductor pattern D in an inverted pattern of the conductor pattern D, and the conductor pattern D is again printed.
A seventh printing step in which the step of printing a plurality of times is repeated, and a sixth step of printing a magnetic layer having a window portion at a predetermined position for connecting the conductor pattern C and the conductor pattern D printed in the seventh printing step
A printing step, a step of printing a magnetic layer on the uppermost part so as to cover the conductor layer printed in the seventh printing step to obtain a laminated body, and firing the obtained laminated body to form a spiral coil inside. And a printing step of forming external electrodes connected to the ends of the spiral coil-shaped conductor on both end faces of the sintered body. And a method for manufacturing a laminated component.