JP2003077740A - Laminated electronic component - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a laminated electronic component that has improved impedance frequency characteristics without increasing the conventional man-hours in miniaturization, and effectively exhibits inductance components for effectively achieving compound functions. SOLUTION: External leading connection sections 233a and 233b are provided at one end. A spiral internal conductor 230a and a spiral internal conductor 230b are provided, where the external leading connection sections 233a and 233b are set to be starting points and a winding direction is set to be the same. At the same time, an internal conductor 270 is provided to electrically connect the other ends of the spiral internal conductor 230a and the spiral internal conductor 230b. Additionally, the internal conductor 270 cannot be pinched between the spiral internal conductor 230a and the spiral internal conductor 230b, and is formed in a plane that differs from the spiral internal conductors 230a and 230b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminated electronic component suitable for use in electronic equipment such as mobile communication. In particular, the present invention relates to a laminated electronic component whose main purpose is noise removal.

[0002]

17 to 21 show the structure of a conventional laminated electronic component.

In FIG. 17, 110 is a green sheet, and the green sheet 110 is composed of at least one of a magnetic material, a dielectric material and an insulating material. Above all, the magnetic material is effective for increasing the inductance value. Used. A plurality of the green sheets 110 are stacked, and a conductor or the like having a predetermined shape is sandwiched between the green sheets 110. That is, the base body is formed by stacking the green sheet 110 and the conductors.

On a predetermined green sheet 110, a spiral inner conductor 2 having an external lead-out connection portion 213 at one end
10 is provided, a green sheet 120 is provided thereon, and a spiral internal conductor 220 having an external lead-out connection portion 223 at one end is provided on the green sheet 120, and a through hole is provided in the green sheet 120. The joint conductor 410 is provided in the through hole. Therefore, through this joint conductor 410, another one of the external lead-out connection portion 213 of the spiral internal conductor 210 and the other external lead-out connection portion 223 of the spiral internal conductor 220 are provided. The joint portion 221 at one end is electrically joined. That is,
Spiral inner conductor 210 and spiral inner conductor 2
A single coil in which 20 is electrically joined via the joining conductor 410 is formed.

By further stacking green sheets 110, a stack 900 as shown in FIG. 18 is obtained.

Although FIG. 17 shows a single element constituting the substrate, it is usually shown in FIG. 18 that a plurality of components such as internal conductors are patterned by a printing method or a transfer method. A laminated body 900 as shown in is obtained.

Next, as shown in FIG. 19, the substrate 500 is divided into individual pieces each having the constituent elements of a single laminated electronic component.
To form. FIG. 20 is a perspective view showing a base body 500 having a single cut-off inductance element with an internal conductor and the like seen through. As shown in FIG. 17, each of the spiral internal conductors 210 and 220 has an external lead-out connecting portion 2
13, 223 are provided and exposed to the outside of the base body 500. Generally, the base body 500 is subjected to heat treatment such as firing, chamfering, etc., and the external lead-out connection portions 213 and 223.
By providing a pair of external electrodes 610 so as to be electrically connected to the external lead-out connecting portions 213 and 223, respectively, on the surface of each of the bases 500 including the above, a laminated electronic component as shown in FIG.

Further, FIG. 22 shows the configuration example of the conventional laminated type electronic component shown in FIGS. 17 to 21, and flows to the spiral inner conductors 210 and 220 when a direct current is applied from the external lead-out connection portion 213 side. It is a top view which showed typically the magnetic flux direction 810 with respect to the electric current direction 710. It should be noted that the magnetic flux direction 810 is schematically shown as a representative of the front side.

As a prior art example, Japanese Patent Laid-Open No. 59-13260.
4, JP-A-11-329850, JP-A-1
There is a publication such as No. 1-204341.

[0010]

However, the following problems have occurred when attempting to reduce the size of the laminated electronic component.

First, as the size of the laminated electronic component is reduced, the area of the coil formed by the spiral inner conductor and the coil interval are inevitably narrowed, and the frequency characteristic of the inductance is impaired. Further, there is a problem that it is difficult to adjust the frequency characteristic.

Further, when trying to realize a composite function having an inductance component, there is a problem that a sufficient space cannot be taken for considering the influence of the magnetic flux generated in the coil and realizing the countermeasure.

As means for solving these problems, in the publication cited as the above-mentioned prior example, one conductor circulates at predetermined two points inside the magnetic body, and the magnetic body is placed at an intermediate position between the two points. Arranging so as to cross through (configuration 1),
A current for inductance adjustment including two inductors that move vertically while forming a spiral at a position aligned below the conductor for a signal transmission line that includes two inductors that move vertically while forming a spiral with respect to the stacking direction. The path is made variable and the frequency characteristic is made variable by the adjusting current (configuration 2), and the two spiral structures that are wound in opposite directions so that the magnetic flux inside the spiral structure is parallel to the stacking plane are electrically connected. It is conceivable that the magnetic flux generated in the inductance component is prevented from adversely affecting other circuit components by being connected in parallel with the above (configuration 3). However, in the configuration 1, since the conductors that respectively circulate at two points form an equivalent coil in the configuration, it is not possible to arbitrarily adjust the characteristics such as frequency. Further, in the configuration 2, the winding direction of the coil is not limited, and the pattern configuration of the internal conductor is complicated and many patterns are required. Further, it is necessary to configure an inductance adjusting current path in addition to the signal transmission path conductor, and it is expected that a separate current control circuit is required to function the adjusting current path. Further, in the configuration 3, there is a problem that the two inductance components are electrically connected in parallel and the inductance function is not sufficiently exhibited.

The present invention solves the above-mentioned problems of the prior art. By selectively limiting or increasing the magnetic flux, the inductance characteristic and the It is an object of the present invention to provide a laminated electronic component that is excellent in the frequency characteristic of inductance and that can effectively realize the complex function by effectively exhibiting the inductance component.

[0015]

The present invention is a laminated electronic component in which a plurality of green sheets are laminated and a plurality of spiral internal conductors are provided between the green sheets, and the green sheets and the internal conductors are laminated. A first spiral inner conductor and a second spiral inner conductor, each having an external lead-out connection portion at one end, and having the external lead-out connection portions as starting points and having the same winding direction, are provided in the base body configured as described above. A first spiral internal conductor that is provided and electrically connects the other ends of the first spiral internal conductor and the second spiral internal conductor
And the inner conductor of (1) was formed in a plane different from that of the first and second spiral inner conductors.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 is a laminated electronic component in which a plurality of green sheets are laminated, and a plurality of spiral internal conductors are provided between the green sheets. A first spiral inner conductor and a second spiral inner conductor, each having an outer lead-out connection portion provided at one end and having the outer lead-out connection portions as starting points and having the same winding direction, are provided in a base body formed by stacking inner conductors. A spiral inner conductor, and a first inner conductor electrically connecting the other ends of the first spiral inner conductor and the second spiral inner conductor to each other. The first and second spiral inner conductors are formed in a plane different from that of the first and second spiral inner conductors, thereby providing the first spiral inner conductor and the second spiral inner conductor. Since there is no first inner conductor electrically connecting the first spiral conductor and the second spiral inner conductor, the first spiral inner conductor and the second spiral inner conductor are inevitably formed. Will be magnetically isolated from each other, and magnetic loss will occur between the first spiral inner conductor and the second spiral inner conductor, so that the inductance value will be reduced but excellent high frequency characteristics will be obtained. can do.

On the other hand, with the external drawing connection portions as starting points, the first
Since the spiral inner conductor and the second spiral inner conductor are wound in the same direction, when the direct current is applied from one of the pair of external electrodes included in the multilayer electronic component, Since the magnetic flux direction generated inside the spiral inner conductor and the second spiral inner conductor is a single direction that continuously circulates inside the first and second spiral inner conductors, the first and second It is possible to suppress the magnetic loss that occurs between the spiral inner conductors, and to suppress the decrease in the inductance value, and obtain excellent high frequency characteristics.

According to a second aspect of the present invention, the first and second spiral internal conductors are provided in the same plane, thereby providing the laminated electronic component according to the first aspect. Not only can the first and second spiral inner conductors be formed by a single pattern, but the other end of the first and second spiral inner conductors, which is different from the outer lead-out connection portion, can be formed. As the number of turns of the first and second spiral inner conductors is increased, the first and second spiral inner conductors are necessarily present inside the first and second spiral inner conductors, respectively. Even if the first inner conductor that electrically connects the conductors is arranged at a position not sandwiched by the first and second spiral inner conductors, it can be composed of a single conductor. Also, in advance,
The positions at which the first inner conductor is electrically joined are the first and second positions.
By providing the inside of the spiral-shaped inner conductor, the positions to be electrically connected to the first inner conductor are made substantially the same and the laminated pattern structure is simplified. Since the number of turns, area, conductor spacing, etc. of each spiral inner conductor can be changed arbitrarily, the characteristics of each spiral inner conductor can be set independently, and further the first spiral inner conductor and the second spiral inner conductor can be set. It is possible to adjust the magnetic loss between the inner conductors and adjust the inductance frequency characteristic. That is, it is possible to easily realize high characteristics without increasing the number of steps in the related art.

Further, in the invention according to claim 3, another spiral conductor is provided between the first inner conductor and the first and second spiral inner conductors, and the first and second spiral conductors are provided. The internal conductor is electrically joined via the another spiral conductor and the first internal conductor, whereby the multilayer electronic component according to claim 1, wherein another internal spiral is provided. The spiral conductor can increase the number of spiral windings and increase the inductance value.

Similarly, the invention according to claim 4 is characterized in that the first inner conductor has a spiral shape.
By using the multilayer electronic component described in (1), the inductance value can be further increased.

According to a fifth aspect of the present invention, a first element portion composed of at least first and second spiral inner conductors and a first inner conductor, and a construction similar to the first element portion. And a second element portion that is non-conducting from the first element portion, and a first and second spiral inner conductor of each of the first element portion and the second element portion. The multilayer electronic component according to claim 1, wherein the first and second element portions are respectively configured by arranging them in parallel and configuring them in the same substrate so as not to face each other in the stacking direction. Since the magnetic flux directions generated around the first and second spiral inner conductors are opposite to each other between adjacent spiral inner conductors and cancel each other out, the multilayer electronic component is downsized and the first element portion and The distance between the second element parts becomes narrower Also, it is possible to reduce the can be characteristic deterioration suppressing crosstalk between the first and second element portions by magnetic interference.

According to a sixth aspect of the present invention, there is provided a first element portion including at least first and second spiral inner conductors and a first inner conductor, and a configuration similar to that of the first element portion. And a second element portion that is non-conducting from the first element portion, and a first and second spiral inner conductor of each of the first element portion and the second element portion. The laminated electronic component according to claim 1, wherein the laminated electronic components are configured so as to face each other in the laminating direction, and thus the magnetic flux directions penetrating inside the opposing spiral internal conductors form a loop. Since they are the same and can be concentrated, a high-performance laminated electronic component having a high degree of magnetic coupling can be realized.

According to a seventh aspect of the present invention, a second inner conductor that forms a capacitance is provided between the first inner conductor and the first inner conductor, and a portion that does not face the first and second spiral inner conductors in the stacking direction is provided. The multilayer electronic component according to claim 1, wherein the second internal conductor is formed so as to include at least, and an external lead electrode portion is provided on the second internal conductor. In addition, since magnetic fluxes cancel each other out in a portion where the second spiral inner conductor is close to each other, it is possible to prevent the second inner conductor from suffering magnetic flux interference, and to combine them without impairing the inductance component and the capacitance component, which is an excellent lamination. Mold electronic parts can be realized.

Embodiments of the laminated electronic component according to the present invention will be described below.

1 to 5 show a representative part of the structure of a laminated inductor and a laminated inductor array according to an embodiment of the present invention.

In FIG. 1, 110 is a green sheet, and the green sheet 110 is composed of at least one of a magnetic material, a dielectric material, and an insulating material. Above all, the magnetic material is effective for increasing the inductance value. Used. A plurality of the green sheets 110 are stacked, and a conductor or the like having a predetermined shape is sandwiched between the green sheets 110. That is, the base body is formed by stacking the green sheet 110 and the conductors.

On a predetermined green sheet 110, a spiral inner conductor 230a having an external lead-out connecting portion 233a at one end and a spiral inner conductor 230b having an outer lead-out connecting portion 233b at one end are provided, and the green sheet is provided thereon. 121 is provided, the internal conductor 270 is provided on the green sheet 121, and through holes are provided in the green sheet 121, and the bonding conductors 411a and 411b are provided in the through holes. Therefore, the joint conductor 411a is electrically connected to the joint portion 231a at the other end and the joint portion 271a of the inner conductor 270 with the external lead-out connection portion 233a of the spiral inner conductor 230a through the joint conductor 411a. Conductor 4
The external lead-out connection portion 233b of the spiral inner conductor 230b is connected to the outer connecting portion 233b of the spiral inner conductor 230b.
31b and the joint portion 271b of the inner conductor 270 are electrically joined. That is, the spiral inner conductor 230a and the spiral inner conductor 230b are respectively connected to the joint conductor 4
A single coil is electrically connected to 11a and 411b through the internal conductor 270.

By further stacking the green sheets 110, a stack 900 as shown in FIG. 18 is obtained.

In addition, as shown in FIG.
Is provided at a position not sandwiched between the spiral internal conductor 230a and the spiral internal conductor 230b in the stacking direction. Therefore, the spiral internal conductor 230a and the spiral internal conductor 230b are inevitably arranged magnetically separated from each other, and the separated spiral internal conductor 230a and spiral internal conductor 230b are separated.
Since a magnetic loss occurs between the two, an excellent high frequency characteristic can be obtained although the inductance value is low. on the other hand,
As shown in FIG. 1, the spiral inner conductors 230a, 2a
The winding direction of 30b is the spiral inner conductor 23a starting from the outer lead-out connection portion 233a and the spiral inner conductor 23 starting from the outer lead-out connection portion 233b.
The winding direction of 0b is the same as that of either the right winding or the left winding. Therefore, as shown in FIG. 6, when a direct current is applied from the external lead-out connection portion 233a side, the respective current directions 710 flowing through the spiral inner conductor 230a and the spiral inner conductor 230b.
a, 710b, the spiral inner conductor 230
The magnetic flux direction generated inside the a and 230b becomes a single magnetic flux direction 820 which continuously circulates inside the spiral inner conductors 230a and 230b, and the magnetic flux generated around the spiral inner conductors 230a and 230b. The directions of the magnetic fluxes generated around the spiral inner conductor 230a and the spiral inner conductor 230b are opposite between the adjacent spiral inner conductors 230a and the spiral inner conductors 230b and cancel each other out. It becomes like directions 810a and 810b. Therefore, the spiral inner conductors 230a, 23
Since most of the magnetic flux generated in 0b is concentrated and enhanced in the magnetic flux direction 820, the magnetic losses generated between the spiral inner conductors 230a and 230b by being magnetically isolated are suppressed and the inductance value is reduced. It is possible to suppress the deterioration and obtain excellent high frequency characteristics.

In FIG. 6, only the front side of the magnetic flux direction is shown in a plan view.

Further, in the structure shown in FIG. 1, both the spiral internal conductors 230a and 230b are provided on the same plane on the predetermined green sheet 110. This allows
The spiral inner conductors 230a and 230b can be formed by a single pattern. Further, the connecting portions 231a and 231b, which are the other ends of the spiral internal conductors 230a and 230b, which are different from the external lead-out connecting portions 233a and 233b, are inevitably increased as the number of turns of the spiral internal conductors 230a and 230b increases. Of the spiral inner conductors 230a and 230b, respectively.
The inner conductor 270 for electrically connecting 230b is a spiral inner conductor 230a and a spiral inner conductor 230b.
The inner conductor 270
And the junction conductor 4 provided on the single green sheet 121
11a and 411b, the spiral inner conductors 230a and 230b can be electrically connected at the connection portions 231a and 231b. In addition, the joint 23
1a and 231b are spiral internal conductors 230a and 23
0b, the joint conductors 411a and 411b and the joint portion 23 are electrically connected to the inner conductor 270.
Even if the positions of 1a and 231b are made substantially the same to simplify the laminated pattern configuration, the spiral internal conductor 23
0a and the spiral inner conductor 230b, the number of windings, the area, the conductor interval, and the like can be arbitrarily changed.
The characteristics of each spiral inner conductor 230a, 230b can be set independently, and as shown in FIG. 6, due to magnetic interference between the spiral inner conductor 230a and the spiral inner conductor 230b, the magnetic flux directions 810a, 810 are generated.
b and the magnetic flux indicated by the magnetic flux direction 820 can be adjusted, and the inductance frequency characteristic can be adjusted.

With this structure, it is possible to easily realize high characteristics without increasing the number of steps even in the conventional structure as shown in FIG.

Further, in the structure of FIG. 1, a structure as shown in FIG. 3 may be used to increase the inductance value. That is, in the configuration of FIG. 1, the green sheet 12 is further formed on the spiral internal conductors 230a and 230b.
1 is provided, spiral internal conductors 250a and 250b are provided on the green sheet 121, and through holes are provided in the green sheet 121. Joining conductors 411a and 411b are provided in the through holes, respectively. ing. Therefore, the joint portion 231 of the spiral inner conductor 230a is connected via the joint conductor 411a.
a and the joint portion 251a of the spiral internal conductor 250a are electrically joined, and further, via the joint conductor 411b,
The joint 231b of the spiral inner conductor 230b and the joint 251b of the spiral inner conductor 250b are electrically joined.

Further, the spiral inner conductors 250a, 2
The green sheet 122 is further provided on the green sheet 50b, and the spiral internal conductor 260 is provided on the green sheet 122.
a, 260b are provided, and through holes are provided in the green sheet 122. Joining conductors 412a, 412b are provided in the through holes, respectively. Therefore, the joint portion 251a of the spiral inner conductor 250a and the joint portion 261a of the spiral inner conductor 260a are electrically joined via the joint conductor 412a, and further, the spiral inner conductor 250b is joined via the joint conductor 412b. The joining portion 251b of the above and the joining portion 261b of the spiral internal conductor 260b are electrically joined.

Further, the spiral inner conductors 260a, 2
The green sheet 121 is provided on the 60b, and the internal conductor 270 shown in FIG. 1 is provided on the green sheet 121.
Moreover, the green sheet 121 is provided with a through hole, and the joining conductor 411a,
411b are provided respectively. Therefore, the spiral inner conductor 260a is connected via the joint conductor 411a.
Of the inner conductor 270 and the joint portion 261a of the internal conductor 270 are electrically joined, and further, via the joint conductor 411b,
The joint portion 261b of the spiral inner conductor 260b and the joint portion 271b of the inner conductor 270 are electrically joined.

By using the configuration shown in FIG. 3 as described above, the number of windings can be increased more than that of the configuration shown in FIG. 1, so that the inductance value can be increased.

Similarly, the inductance value can be increased by stacking a plurality of the configurations shown in FIG. 3 and further increasing the number of turns.

Further, although the inner conductor 270 is shown as a simple rectangle in FIG. 1, a spiral inner conductor 280 as shown in FIG. 2 may be used instead. In this case, in the configuration shown in FIG. 1, the joining conductor 411a provided on the green sheet 121 and the joining portion 281a at one end of the spiral internal conductor 280a are joined, and the green sheet 1 is also formed.
21 and the joint portion 281b at one end of the spiral inner conductor 280b are joined. That is, the spiral inner conductor 230a and the spiral inner conductor 230b are respectively joined conductors 411a, 41.
A single coil is electrically connected to 1b through the spiral inner conductor 280.

Further, as shown in FIG. 2, the spiral inner conductors 280a and 280b are connected to the joints 281a and 281b.
When one of the two is used as a starting point, the winding direction is set to be the reverse winding direction with respect to either the right winding or the left winding, and the continuous spiral inner conductor 280 is formed.

With this configuration, the number of windings can be increased as compared with the configuration shown in FIG. 1, so that the inductance value can be further increased.

Although FIG. 1 shows a single element constituting the substrate, it is customary to provide a plurality of elements such as a plurality of internal conductors which are patterned by a printing method or a transfer method. A laminated body 900 as shown in is obtained.

Next, as shown in FIG. 19, the substrate 500 is divided into individual pieces each having the constituent elements of a single laminated electronic component.
To form. FIG. 4 is a perspective view showing a base 500 having a single cut-off inductance element with an internal conductor and the like seen through. As shown in FIG. 1, each of the spiral internal conductors 230a and 230b has an external lead-out connection portion 2
33a and 233b are provided and exposed to the outside of the base body 500. Generally, the base body 500 is subjected to heat treatment such as firing, chamfering, etc., and the external lead-out connection portion 233a,
By providing a pair of external electrodes 610 so as to be electrically connected to the external lead-out connection portions 233a and 233b, respectively, on the surface of the base body 500 including 233b.
A multilayer inductor as shown by 1 is constructed.

FIG. 5 shows the external drawer connection portions 233a and 233.
b, and an element part 1 including an inductance element composed of at least the spiral inner conductors 230a and 230b and the inner conductor 270 as shown in FIG. 1, and a structure similar to this element part 1 The external lead-out connection portions ‘233a’ and ‘233b’, which are not electrically connected to the portion ‘1,’ and at least the spiral internal conductors ‘230a’ and ‘2’
30b, and the element unit 2 having an inductance element composed of the inner conductor '270 and the like, and the spiral inner conductor 230a and the spiral inner conductor' 230a,
And the spiral inner conductor 230b and the spiral inner conductor '230b are arranged in parallel, respectively, and in the stacking direction, the spiral inner conductor 230a, the spiral inner conductor' 230a, and the spiral inner conductor 230.
b provided with two element parts 1 and 2 configured so that b and the spiral inner conductor '230b do not face each other.
0 is shown in a perspective view in which the internal conductor and the like are seen through.

In this configuration, as shown in FIG.
In the element part 1, when a direct current is applied from the external lead-out connection part 233a side, the spiral inner conductors 230a, 23a
The direction of the magnetic flux generated around the spiral inner conductors 230a, 230b by the respective current directions 710a, 710b flowing in 0b is 0.
0a and the spiral inner conductor 230b, the magnetic flux directions generated around the spiral inner conductor 230b are adjacent to each other.
a and the spiral inner conductor 230b are in opposite directions and cancel each other, so that the magnetic flux directions 810a, 810a,
It becomes like 810b.

Similarly, in the element portion 2, when a direct current is applied from the side of the external lead-out connection portion 233a, the spiral-shaped inner conductors ‘230a’ and ‘230b’ flow in the respective current directions ‘710a’ and ‘710b’. The magnetic flux directions generated around the inner conductors' 230a and 230b are the same as the spiral inner conductor '230a and the spiral inner conductor' 230a adjacent to the spiral inner conductor '230a and the spiral inner conductor' 230b. The internal conductors' 230b are in opposite directions and cancel each other out, so that the magnetic flux directions' 810a, 'respectively.
It becomes like 810b.

Therefore, due to the miniaturization of the base body 500 having the two element portions 1 and 2, even if the distance between the element portions 1 and 2 is narrowed, the magnetic flux is generated between the element portions 1 and 2. Since the element functions have already been canceled out, crosstalk between the element portions 1 and 2 caused by magnetic interference can be suppressed, and characteristic deterioration can be reduced. Generally, the base body 500 is subjected to heat treatment such as firing, chamfering, or the like, and the external lead-out connection portion 233a, 233b is formed on the surface of each of the base body 500 including the external lead-out connection portions 233a and 233b. 233b,
Also, by providing the pair of external electrodes 610 and the pair of external electrodes 620 so as to be electrically connected to the external lead-out connecting parts 233a and 233b individually, the laminated inductor array as shown in FIG. 9 is configured. It

5 to 6, the structure in which the two element portions 1 and 2 are provided on the base body 500 is shown. However, in the effect on the magnetic interference as shown in FIG. 6, the structure is similar. The same is true even if a plurality of element parts are similarly formed on the same base.

Next, FIGS. 7 to 9 show a representative part of the structure of the laminated electronic component in one embodiment of the present invention.

In FIG. 7, 110 is a green sheet, and the green sheet 110 is composed of at least one of a magnetic material, a dielectric material and an insulating material. Above all, the magnetic material is effective for increasing the inductance value. Used. A plurality of the green sheets 110 are stacked, and a conductor or the like having a predetermined shape is sandwiched between the green sheets 110. That is, the base body is formed by stacking the green sheet 110 and the conductors.

An internal conductor 270 is provided on a predetermined green sheet 110, a green sheet 121 is provided on the internal conductor 270, and the external lead-out connection portion 2 is provided on the green sheet 121.
33a is provided at one end with a spiral inner conductor 230a and an external lead-out connecting portion 233b is provided at one end with a spiral inner conductor 230b, and the green sheet 121 is provided with a through hole. Bonding conductors 411a and 411b are provided respectively. Therefore, the connecting conductor 411a and the external lead-out connecting portion 233a of the spiral internal conductor 230a are connected to the connecting portion 231a at the other end and the internal conductor 270.
Of the spiral internal conductor 230b and the external lead-out connection portion 233b of the spiral internal conductor 230b via the junction conductor 411b, and the junction portion 231b of the other end and the junction portion 271b of the internal conductor 270. Are electrically joined. That is, the spiral inner conductor 230a
And the spiral inner conductor 230b are electrically joined to the respective joining conductors 411a and 411b via the inner conductor 270 to form a single coil.

Further, the spiral inner conductors 230a, 2a
The winding direction of 30b is the spiral inner conductor 23a starting from the outer lead-out connection portion 233a and the spiral inner conductor 23 starting from the outer lead-out connection portion 233b.
The winding direction of 0b is the same as that of either the right winding or the left winding.

Further, a green sheet 110 is provided on the green sheet 110, and the external drawer connecting portion 2 is provided on the green sheet 110.
The spiral inner conductor 240a having 43a at one end and the spiral inner conductor 240b having the outer lead-out connecting portion 243b at one end are provided on the green sheet 121a.
And the inner conductor 27 is provided on the green sheet 121.
0, and through holes are provided in the green sheet 121, and the bonding conductors 411a and 411b are provided in the through holes. Therefore, through the joint conductor 411a, the outer lead-out connection portion 243a of the spiral inner conductor 240a and the joint portion 241a at the other end are joined to the joint portion 2 of the inner conductor 270.
71a is electrically joined, and further, the joining portion 241b of the other end and the joining portion 271b of the inner conductor 270 are electrically connected via the joining conductor 411b to the external lead-out connection portion 243b of the spiral inner conductor 240b. To be joined to. That is, the spiral inner conductor 240a and the spiral inner conductor 240b are respectively joined conductors 411.
A single coil is electrically connected to a and 411b through the internal conductor 270.

Further, the spiral inner conductors 240a, 2
The winding direction of 40b is the spiral inner conductor 240a starting from the external lead-out connection portion 243a and the spiral inner conductor 24 starting from the external lead-out connection portion 243b.
The winding direction of 0b is the same as that of either the right winding or the left winding.

At the same time, the spiral inner conductor 230a,
The winding directions of 230b and the spiral inner conductors 240a, 240b are the same as those of the respective outer lead-out connection portions 233a, 23.
3b and the external pull-out connection portions 243a and 243b are formed so as to have the same winding direction with respect to either the right-handed or left-handed winding.

By further stacking the green sheets 110, a stack 900 as shown in FIG. 18 is obtained.

Next, as shown in FIG. 19, the substrate 500 is divided into individual pieces each having the constituent elements of a single laminated electronic component.
To form. FIG. 8 shows the external drawer connection portions 233a and 233.
b, and the element part 3 provided with an inductance element composed of at least the spiral inner conductors 230a and 230b, the inner conductor 270, etc. as shown in FIG. Connection part 243a, 2
43b, and at least the spiral inner conductor 240
a, 240b, and the element portion 4 having an inductance element configured by the inner conductor 270 and the like, the spiral inner conductor 230a and the spiral inner conductor 240.
a, the spiral inner conductor 230b and the spiral inner conductor 240b are arranged in parallel, respectively, and in the stacking direction, the spiral inner conductor 230a, the spiral inner conductor 240a, and the spiral inner conductor 230.
b is a perspective view in which the internal conductor and the like are seen through, showing a base body 500 provided with two element portions 3 and 4 configured such that b and the spiral internal conductor 240b face each other.

As shown in FIG. 7, the spiral internal conductors 230a and 230b are respectively connected to the external lead-out connecting portion 2.
33a and 233b are provided and exposed to the outside of the base body 500. Further, the spiral inner conductors 240a, 24
0b includes external drawer connection parts 243a and 243b, respectively.
Is provided and is exposed to the outside of the base body 500. In general, the base body 500 is subjected to heat treatment such as firing, chamfering, etc., and the outer lead-out connection portion 233a is formed on each surface of the base body 500 including the outer lead-out connection portions 233a and 233b and the outer lead-out connection portions 243a and 243b. , 233
By providing a pair of external electrodes 610 and external electrodes 620 so as to electrically connect b and the external lead-out connection portions 243a and 243b, respectively, a laminated electronic component as shown in FIG. 9 is configured.

FIG. 10 shows an external lead-out connection portion 233 in the configuration example of the laminated electronic component of the present invention shown in FIGS. 7 to 9.
a and the current directions 710a and 710b and the current direction 720a of the spiral inner conductors 230a and 230b and the spiral inner conductors 240a and 240b, respectively, when a direct current is applied from the side of the external lead-out connection portion 243a.
FIG. 7 is a side view schematically showing 720b and magnetic flux directions 810a, 810b, and 820. In FIG. 10, the current direction and the magnetic flux direction are schematically illustrated on the near side. With this configuration, as shown in FIG. 10, the magnetic flux direction 82 penetrating the opposing spiral inner conductors 230a and 240a and the spiral inner conductors 230b and 240b.
Since 0s form a loop and are the same and can be concentrated, a high-performance laminated electronic component having a high degree of magnetic coupling can be realized.

FIG. 11 is a graph showing impedance characteristic 5 according to the structure of the laminated electronic component according to the embodiment of the present invention shown in FIGS. 7 to 9. The impedance characteristic is higher with respect to the frequency than the impedance characteristic 6 in the configuration example of the conventional multilayer electronic component shown in FIG. This shows an example in which the inductance function is excellent with respect to frequency in one embodiment of the present invention.

Next, FIGS. 13 to 15 show a representative part of the structure of the multilayer electronic component according to one embodiment of the present invention.

In FIG. 13, with respect to the configuration shown in FIG.
An internal conductor 290 is provided in place of the internal conductor 270, and a green sheet 130 made of at least one of a magnetic material, a dielectric material, and an insulating material is laminated thereon. The material of the green sheet 130 has a capacitance value particularly Dielectric materials are effectively used to enhance. Further, by forming the internal conductors 310c and 310b so as to include at least a portion that does not face the spiral internal conductor 230a and the spiral internal conductor 230b in the stacking plane direction, the internal conductors 310c and 310b are generated in the coiled internal conductor as shown in FIG. Inner conductor 290 in a place that is not easily affected by magnetic flux
c, 310c, and the internal conductors 290d, 310d, and therefore, a laminated LC composite electronic component having excellent characteristics by preventing characteristic deterioration of both capacitance and inductance components due to magnetic interference is prevented. Can be configured.

Similarly, FIG. 14 is a perspective view of the base body 500 including the internal conductor components shown in FIG. As shown in FIG. 13, a pair of external lead-out connection portions 23 exposed to the outside of the base body 500.
3a, 233b, and external drawer connection parts 313c, 313
d is provided. In general, the base body 500 is subjected to heat treatment such as firing, chamfering, etc., and the external lead-out connection portions 233a and 233b, and the external lead-out connection portions 313c and 3
The external lead-out connection portions 233a and 233b and the external lead-out connection portion 3 on each surface of the base body 500 including 13d.
By providing a pair of external electrodes 610 and external electrodes 630 so as to be electrically connected to 13c and 313d individually, a laminated LC composite electronic component as shown in FIG. 15 is configured.

In the configuration shown in FIG. 13, since the LC T-type filter is configured, the spiral internal conductors 230a, 2a
The internal conductor 290 electrically connecting 30b is used to form a capacitance component with the internal conductor 310. This means the position of the internal conductor having the capacitance component, and the internal conductor having the inductance component and the capacitance component are It does not matter how to join the internal conductor, and regardless of the joining method, when the internal conductor having a capacitance component is formed so as to include at least a portion that does not face the spiral internal conductor in the stacking direction, Get the effect.

In the structure shown in FIG. 13, the internal conductor 290 and the internal conductor 310 form a single capacitance component. However, in the same structure, a plurality of internal conductors forming a plurality of capacitance components are electrically connected. You may join in parallel and may raise a capacitance component.

[0065]

The present invention is a laminated electronic component in which a plurality of green sheets are laminated and a plurality of spiral internal conductors are provided between the green sheets, and the green sheets and the internal conductors are laminated. An external lead-out connection portion is provided at one end in the base body, and a first spiral inner conductor and a second spiral inner conductor are provided with the external lead-out connection portions as starting points and the winding directions are the same direction. ,
A first inner conductor is provided for electrically connecting the other ends of the first spiral inner conductor and the second spiral inner conductor. Further, the first inner conductor is prevented from being sandwiched between the first spiral inner conductor and the second spiral inner conductor in the stacking direction which constitutes the base, and the first and second spiral conductors are formed. By forming it on a plane different from that of the internal conductor, the inductance value and the frequency characteristics of the inductance can be adjusted arbitrarily without impairing the inductance function, effectively exhibiting the inductance component and enabling the combined function. Provided is a multi-layer electronic component that can be realized.

[Brief description of drawings]

FIG. 1 is a plan view showing a configuration example of an internal conductor of a multilayer electronic component according to an embodiment of the present invention.

FIG. 2 is a plan view showing an example of an internal conductor of a multilayer electronic component according to an embodiment of the present invention.

FIG. 3 is a plan view showing a configuration example of an internal conductor of a multilayer electronic component according to an embodiment of the present invention.

FIG. 4 is a perspective view in which the internal conductors of the multilayer electronic component according to the embodiment of the present invention are seen through.

FIG. 5 is a perspective view in which the internal conductors of the multilayer electronic component according to the embodiment of the present invention are seen through.

FIG. 6 is a schematic diagram showing magnetic flux of a multilayer electronic component according to an embodiment of the present invention.

FIG. 7 is a plan view showing an internal conductor configuration example of a multilayer electronic component according to an embodiment of the present invention.

FIG. 8 is a perspective view of an internal conductor of a multilayer electronic component according to an embodiment of the present invention seen through.

FIG. 9 is a perspective view showing the external appearance of a multilayer electronic component according to an embodiment of the present invention.

FIG. 10 is a schematic diagram showing magnetic flux of a multilayer electronic component according to an embodiment of the present invention.

FIG. 11 is a graph showing impedance characteristics when a multilayer electronic component according to an embodiment of the present invention is configured.

FIG. 12 is a graph showing impedance characteristics when a conventional multilayer electronic component is configured.

FIG. 13 is a plan view showing an example of the internal conductor configuration of a laminated LC composite electronic component according to an embodiment of the present invention.

FIG. 14 is a perspective view of the laminated LC composite electronic component according to an embodiment of the present invention with an internal conductor and the like seen through.

FIG. 15 is a perspective view showing an appearance of a laminated LC composite electronic component according to an embodiment of the present invention.

FIG. 16 is a schematic diagram showing magnetic flux of a laminated LC composite electronic component according to an embodiment of the present invention.

FIG. 17 is a plan view showing an internal conductor configuration example of a conventional multilayer electronic component.

FIG. 18 is a perspective view showing a method for manufacturing a multilayer electronic component.

FIG. 19 is a perspective view showing a method of manufacturing a multilayer electronic component.

FIG. 20 is a perspective view of an internal conductor of a conventional multilayer electronic component seen through.

FIG. 21 is a perspective view showing a method for manufacturing a multilayer electronic component.

FIG. 22 is a schematic diagram showing a magnetic flux of a conventional multilayer electronic component.

[Explanation of symbols]

1, 2, 3, 4 Element part 5, 6 Characteristic curve 110, 121, 122, 130 Green sheet 210, 220, 230, 230a, 230b, 24
0, 240a, 240b, 250, 250a, 250
b, 260, 260a, 260b, 280, 280a,
280b Spiral internal conductors 211, 221, 231a, 231b, 241a, 24
1b, 251a, 251b, 252a, 252b, 26
1a, 261b, 262a, 262b, 271a, 27
1b, 281a, 281b, 291a, 291b Joining parts 213, 223, 233a, 233b, '233a,'
233b, 243a, 243b, 313c, 313d
External drawer connection parts 270, 290, 290c, 290d, 310, 310
c, 310d inner conductors 410, 411a, 411b, 412a, 412b, 4
21a, 421b Bonding conductor 500 Base bodies 610, 620, 630 External electrodes 710, 710a, 710b, '710a,' 710
b, 720a, 720b Current direction 810, 810a, 810b, 820, '810a,'
810b, '820 magnetic flux direction 900 laminate

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Yasuhiro Saeki             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. F-term (reference) 5E070 AA01 AB04 BA12

Claims (7)

[Claims] 1. A laminated electronic component having a plurality of green sheets laminated, and a plurality of spiral internal conductors provided between the green sheets, wherein the substrate is formed by laminating the green sheets and the internal conductors. An external lead-out connection portion is provided at one end, and a first spiral inner conductor and a second spiral inner conductor whose starting directions are the external lead-out connection portions and the winding directions are the same direction are provided. A first inner conductor for electrically connecting the other end of each of the spiral inner conductor and the second spiral inner conductor, and the first inner conductor is defined as the first and second spiral inner conductors. A laminated electronic component formed on different planes. 2. The laminated electronic component according to claim 1, wherein the first and second spiral internal conductors are provided in the same plane. 3. Another spiral conductor is provided between the first inner conductor and the first and second spiral inner conductors, and the first and second spiral inner conductors are the other spirals. The multilayer electronic component according to claim 1, wherein the multilayer electronic component is electrically connected via a conductor and the first inner conductor. 4. The multilayer electronic component according to claim 1, wherein the first inner conductor has a spiral shape. 5. A first element part composed of at least first and second spiral inner conductors and a first inner conductor, and a structure similar to that of the first element part, wherein Of the first element part and the second element part of the second element part are provided in parallel with each other and laminated. The multilayer electronic component according to claim 1, wherein the multilayer electronic components are configured so as not to face each other in the same direction in the same substrate. 6. A first element portion comprising at least first and second spiral inner conductors and a first inner conductor, and a construction similar to the first element portion, wherein Of the first element section and the second element section of the second element section are opposed to each other in the stacking direction. The laminated electronic component according to claim 1, wherein the laminated electronic component is formed in the same substrate. 7. A second inner conductor that forms a capacitance is provided between the first inner conductor and the first inner conductor, and the second inner conductor includes at least a portion that does not face the first and second spiral inner conductors in the stacking direction. 2. The multilayer electronic component according to claim 1, wherein two internal conductors are formed and an external lead electrode portion is provided on the second internal conductor.