JPH0424911A - Laminated composite electronic component - Google Patents

Abstract

PURPOSE:To expand the adjustable range of capacity or inductances kept by a plurality of capacitor elements or inductor elements while promoting miniaturization by laminating either a plurality of dielectric substance parts having dielectric constants or a plurality of magnetic substance parts having different permeability factors in a layer or laminating mutually the dielectric substance parts and the magnetic substance parts in a layer and further, forming internal electrodes at the inside of the dielectric substance parts or the magnetic substance parts. CONSTITUTION:A laminator 2 is obtained by laminating two dielectric substance parts 2a and 2b having different dielectric constants mutually in a layer and respective dielectric substance parts 2a and 2b are made up by laminating a plurality of rectangular dielectric sheets 3 and 4 one after another. In such a case, respective dielectric sheets 3 and 4 are equipped with the same dielectric constant. Further, in some required sheets among these dielectric sheets 3 and 4, capacitor electrode patterns 5-8 that are formed into each linear shape as internal electrodes having required shapes are formed with printing or the like of a conductive paste.

Description

DETAILED DESCRIPTION OF THE INVENTION <Field of Industrial Application> The present invention relates to a laminated composite electronic component including a plurality of capacitor elements or inductor elements, or these pixel elements collectively.

<Prior Art> Conventionally, there has been a strong demand for miniaturization of electronic components, and in order to meet this demand, compoundization has been promoted.

As such composite electronic components, those configured as a laminate type including a plurality of capacitor elements or inductor elements, such as so-called capacitor arrays and inductor arrays, are known. In other words, this capacitor array is an electronic component in which a plurality of dielectric sheets having the same dielectric constant are laminated and integrated, and terminal electrodes are formed on the outer surface of the resulting laminate. Capacitor electrode patterns of the desired shape that are to be arranged facing each other are formed in advance on the required ones of the capacitor electrode patterns, and the ends of these capacitor electrode patterns are exposed on the outer surface of the laminate and then connected to the terminal electrodes. is connected to.

On the other hand, some inductor arrays are constructed by laminating a plurality of magnetic sheets having the same magnetic permeability. In this inductor array, similar to the capacitor array described above, inductor electrode patterns in the form of straight lines or curved lines are formed in advance on required magnetic sheets, and the inductor electrode patterns exposed on the outer surface of the laminate are formed in advance. Each end of the inductor electrode pattern is connected to a terminal electrode. In addition, inductor arrays with different configurations are formed by laminating and integrating magnetic sheets having the same magnetic permeability, but by forming an inductor electrode pattern of a desired shape on a desired magnetic sheet in advance, There is also a wire-wound type in which these inductor electrode patterns are connected to each other via through holes.

<Problems to be Solved by the Invention> By the way, in order to make the capacitances of the plurality of capacitor elements different from each other in the laminated composite electronic component of the conventional configuration, for example, a capacitor array,
Area of each capacitor electrode pattern (pattern width)
Alternatively, this is achieved by changing the mutual spacing. However, by simply adopting these means, it is difficult to realize miniaturization and at the same time to make the capacitances of the capacitor elements significantly different from each other, resulting in the disadvantage that the adjustable range is narrow.

Also, in an inductor array, the inductance of each inductor element is made different by changing the area and bending state of each inductor electrode pattern, but this alone is not enough, as in the case of a capacitor array, the inductance of the inductor element The mutual adjustable range of inductance becomes narrower. Furthermore, the inductor array, which can be called a wire-wound type, not only has a narrow adjustable range of inductance, but also has a complicated structure, which increases the labor and cost required for manufacturing.

The uninvented invention was devised in view of such conventional disadvantages, and it is possible to expand the adjustable range of capacitance or inductance of each of a plurality of capacitor elements or inductor elements while promoting miniaturization. The aim is to provide laminated composite electronic components.

Means for Solving the Problems> In order to achieve the above object, the composite electronic component according to the present invention includes a plurality of dielectric parts having different permittivity or a plurality of magnetic parts having different magnetic permeability. ,or,
The dielectric portion and the magnetic portion are laminated and integrated with each other, and internal electrodes having a desired shape are formed inside each of the dielectric portion and the magnetic portion.

<Function> First, when the present invention is applied to a capacitor array as an example of a laminated composite electronic component, this capacitor array is an integrated stack of a plurality of dielectric parts having different dielectric constants, and each dielectric A capacitor electrode pattern consisting of internal electrodes having a desired shape is formed inside the portion. Therefore, the capacitance of each capacitor element constituted by each dielectric part is determined according to the dielectric constant of the dielectric part, and if these dielectric constants are made to differ from each other, the capacitance of the capacitor elements will differ. It turns out.

Further, the same applies when the present invention is applied to an inductor array, and the same applies when the present invention is applied to a composite electronic component including a capacitor element and an inductor element.

<Example> Embodiments of the present invention will be described below based on the drawings.

First, as a first embodiment of the present invention, a case where the present invention is applied to a capacitor array, which is an example of a multilayer composite electronic component, will be described. FIG. 1 is a perspective view showing the external appearance of the capacitor array, FIG. 2 is an equivalent circuit diagram thereof, and FIG. 3 is an exploded perspective view showing the internal structure of the laminate. Reference numeral 1 in these figures indicates a capacitor array, and this capacitor array 1 includes a laminate 2 fired into a substantially rectangular parallelepiped shape.

As shown in FIGS. 1 and 3, this laminate 2 is formed by laminating and integrating two dielectric portions 2a2b having different dielectric constants, and each of the dielectric portions 2a and 2b has a rectangular shape. It is constructed by sequentially laminating a plurality of shaped dielectric sheets 3.4. Note that at this time, the dielectric constants of the dielectric sheets 34 are the same. Then, on required ones of these dielectric sheets 3.4, linear capacitor electrode patterns 5 to 8, which serve as internal electrodes of a desired shape and are arranged opposite to each other, are printed with conductive paste. It is formed by etc. Further, terminal electrodes 9 to 12 are formed at predetermined positions on the outer surface of the laminate 2 by baking a conductive paste, etc., and are connected to the ends of the capacitor electrode patterns 5 to 8 exposed on the outer surface. ing.

Therefore, the capacitor array 1 configured in this way
The equivalent circuit of is expressed as shown in FIG.

That is, in this capacitor array 1, the laminate 2
The dielectric constants of the dielectric parts 2a and 2b that constitute the dielectric parts 2a and 2b are different from each other, and each of the dielectric parts 2a and 2b
Since the capacitor electrode patterns 5 to 8 are formed inside, the capacitance of each capacitor element formed for each dielectric portion 2a2b is determined according to the dielectric constant of the dielectric portions 2a and 2b. As a result,
There will inevitably be differences. In addition, at this time, as shown in FIG. 3, means may also be employed to vary the area (pattern width) of each of the capacitor electrode patterns 6 to 8 or to vary the mutual spacing between the capacitor electrode patterns 5 to 8. is also possible. Furthermore, in the above description, the laminate 2 is made up of two dielectric parts 2a and 2b, but the invention is not limited to this, and for example,
It goes without saying that the laminate 2 may be constructed by laminating and integrating two or more dielectric parts.

Next, as a second embodiment of the present invention, a case where the laminated composite electronic component according to the present invention is an inductor array will be described. FIG. 4 is a perspective view showing the appearance of the inductor array, FIG. 5 is an equivalent circuit diagram thereof, and FIG. 6 is an exploded perspective view showing the internal structure of the laminate. Reference numeral 20 in these figures indicates an inductor array, and this inductor array 20 is a laminate 2 fired into a substantially rectangular parallelepiped shape.
1.

As shown in FIGS. 4 and 6, this laminate 21 is constructed by laminating and integrating two magnetic material portions 21a and 21b with different magnetic permeabilities. Each is constructed by sequentially stacking a plurality of rectangular magnetic (ferrite) sheets 2223. And these magnetic sheets 2
Inductor electrode patterns 24 to 27 in straight or curved lines, which serve as internal electrodes in a desired shape, are formed on required ones of 223, while at predetermined positions on the outer surface of this laminate 2, inductor electrode patterns 24 to 27 are formed. Terminal electrodes 28 to 31 are formed to be connected to the ends of the inductor electrode patterns 24 to 27 exposed on the outer surface. Therefore, the equivalent circuit of the inductor array 20 configured in this manner is expressed as shown in FIG.

That is, in this inductor array 20, since the inductor electrode patterns 24 to 27 are formed inside each of the magnetic material portions 212 and 21b that constitute the laminate 21 and have mutually different magnetic permeabilities, the magnetic material portions 2
The inductance of each inductor element configured for each of the magnetic parts 21a and 21b is
It is determined according to the magnetic permeability of b. Therefore, if the magnetic permeability of the magnetic material portions 21a and 21b is made different from each other, the inductances of the inductor elements will necessarily differ depending on the magnetic permeability.

Note that at this time, it is also possible to employ means for making the areas (pattern widths) of the inductor electrode patterns 24 to 27 different, and it is also possible to configure the laminate 21 with two or more magnetic material parts. It is.

Furthermore, in the first and second embodiments described above, a laminate is formed by laminating and integrating a plurality of dielectric portions 2a, 2b having different dielectric constants or a plurality of magnetic portions 21a, 21b having different magnetic permeability. 2.21, the present invention is applied to the capacitor array 1 and the inductor array 20, but is not limited thereto, and the present invention is applied to a dielectric portion and a magnetic portion configured in the same manner as described above. It goes without saying that the present invention may be applied to a composite electronic component (not shown) having a laminate formed by laminating and integrating the above and the like.

In the above description, the electrodes formed on different dielectric parts and magnetic parts are taken out separately, but they may be connected vertically or horizontally across the same terminal electrode.

<Effects of the Invention> As explained above, in the laminated composite electronic component according to the present invention, each of the plurality of dielectric parts having different dielectric constants or the plurality of magnetic parts having different magnetic permeability, or The part and the magnetic part are laminated and integrated with each other, and an internal electrode of a desired shape is formed inside each of the dielectric part or the magnetic part.

Therefore, when the present invention is applied to a capacitor array as a laminated composite electronic component, a plurality of dielectric portions constituting a laminate formed by integrating the layers, that is, a plurality of dielectric portions having different dielectric constants from each other, and The capacitances of the capacitor elements each including internal electrodes formed inside each differ depending on the dielectric constant of the dielectric portion. This also applies to the case where the present invention is applied to an inductor array or a composite electronic component formed by laminating a dielectric portion and a magnetic portion.

As a result, according to the present invention, it is possible to promote miniaturization of a composite electronic component and at the same time easily expand the adjustable range of the capacitance or inductance of each of the plurality of capacitor elements or inductor elements constituting the composite electronic component. This excellent effect can be obtained.

[Brief explanation of the drawing]

1 to 6 relate to embodiments of the present invention; FIG. 1 is a perspective view showing the external appearance of a capacitor array as a first embodiment of a multilayer composite electronic component according to the present invention, and FIG. 2 is a perspective view thereof. It is an equivalent circuit diagram, and FIG. 3 is an exploded perspective view showing the internal structure of the laminate. Moreover, FIG. 4 is a perspective view showing the appearance of an inductor array as a second embodiment of the present invention, FIG. 5 is an equivalent circuit diagram thereof, and FIG. 6 is an exploded perspective view showing the internal structure of the laminate. It is. In the figure, numeral 1 is a capacitor array (laminated composite electronic component), 2 is a laminate, 2a and 2b are dielectric parts, 5 to 8
2 is a capacitor electrode pattern (internal electrode), 20 is an inductor array (laminated composite electronic component), 21 is a laminate, 2
13.21b is a magnetic material portion, and 24 to 27 are inductor electrode patterns (internal electrodes).

Claims (1)

[Claims] (1) Laminating and integrating each of a plurality of dielectric parts having different dielectric constants or a plurality of magnetic parts having different magnetic permeability, or the dielectric part and the magnetic part, and the dielectric part or A laminated composite electronic component characterized in that internal electrodes of a desired shape are formed inside each of the magnetic parts.