KR102161540B1 - Performance enhanced hybrid inductor using composite material and electronic component having the same - Google Patents

Abstract

Disclosed are a performance enhanced hybrid inductor using a composite material and an electronic component having the same, wherein the inductor is designed to be able to implement a high Q value, which is an advantage of a ferrite inductor, while maintaining the basic characteristics of a dielectric inductor. According to the present invention, the performance enhanced hybrid inductor using the composite material includes a hybrid dielectric layer in which a dielectric material and a magnetic material are mixed; and an electrode pattern disposed in the hybrid dielectric layer. The hybrid dielectric layer is a mixture in which the magnetic material is added to the dielectric material.

Description

Performance-enhancing hybrid inductor using composite materials and electronic components having the same {PERFORMANCE ENHANCED HYBRID INDUCTOR USING COMPOSITE MATERIAL AND ELECTRONIC COMPONENT HAVING THE SAME}

The present invention relates to a hybrid inductor implementation technology, and more particularly, to a performance enhancement type hybrid inductor using a composite material and an electronic component having the same.

Inductors (L), capacitors (C), and resistors (R) used as passive elements in electronic circuits have their own functions and roles, but are combined with each other to perform new circuit functions.

For example, a capacitor basically blocks DC and passes an AC signal, but it also constitutes a time constant circuit, a time delay circuit, an RC filter and an LC filter, and the capacitor itself removes noise. I also do.

In the case of an inductor, it performs functions such as removing high-frequency noise and matching impedance.

These inductors are commercialized by being classified into magnetic inductors using magnetic materials and dielectric inductors using dielectric materials.

Hereinafter, a conventional inductor will be described in more detail with reference to the accompanying drawings.

1 is a schematic diagram illustrating the characteristics of a conventional inductor, and FIG. 2 is a schematic diagram showing the characteristics of a conventional dielectric inductor and a magnetic inductor.

As shown in FIGS. 1 and 2, the conventional inductor can be divided into a high frequency dielectric inductor using a dielectric and a low frequency ferrite inductor using a magnetic material.

Since the dielectric inductor has a permeability of 1, it is difficult to obtain a high inductance value. However, since the loss is relatively small, it is easy to implement an inductor having a high quality factor value at a high frequency.

On the other hand, since the magnetic inductor has a high permeability, it is easy to implement a high inductance in the same space. However, it is difficult to obtain a high quality factor value and a high frequency operation is difficult because the loss of the magnetic material is large.

As such, dielectric inductors and magnetic inductors have distinctly different available frequencies and different required characteristics, so the fields of application are divided and developed, and products are currently being divided.

Meanwhile, FIG. 3 is a diagram showing an inductor structure in which magnetic materials and dielectrics are alternately stacked, FIG. 4 is a schematic diagram showing a common mode filter structure, and FIG. 5 is a photograph showing a common mode filter product.

As shown in FIG. 3, an inductor having a composite structure in which magnetic materials and dielectrics are alternately stacked is shown.

4 and 5 show the structure and product of a common mode filter for controlling common mode noise using a composite inductor.

This common mode filter removes common mode noise caused by imbalance between high-speed differential signal lines. In addition, the common mode filter is an essential component for smooth data processing in a high frequency band of several to hundreds of GHz of mobile devices or digital devices including smartphones.

Such a common mode filter uses a composite structure in which a magnetic material and a dielectric are stacked, but an inductor using a magnetic permeability characteristic is implemented in a magnetic structure, and a capacitor using a dielectric constant characteristic is implemented in a dielectric structure.

That is, although a composite structure was used, the inductor implemented here corresponds to a magnetic inductor. As described above, in the prior art, an inductor has been implemented using a material of a magnetic material or a dielectric material, and only shows inductor characteristics due to the intrinsic characteristics of the magnetic material or dielectric.

As a related prior document, there is Korean Laid-Open Patent Publication No. 10-2014-0131418 (published on November 13, 2014), which describes a hybrid type power inductor and a method of manufacturing the same.

An object of the present invention is to provide a performance-enhancing hybrid inductor using a composite material designed to implement a high Q value, which is an advantage of a ferrite inductor, while maintaining the basic characteristics of a dielectric inductor, and an electronic component having the same.

A performance enhancing hybrid inductor using a composite material according to an embodiment of the present invention for achieving the above object includes: a hybrid dielectric layer in which a dielectric material and a magnetic material are mixed; And an electrode pattern disposed in the hybrid dielectric layer, wherein the hybrid dielectric layer is a mixture in which a magnetic material is added to the dielectric.

The dielectric material is a ceramic material, and the magnetic material is a ferrite material.

In addition, the hybrid dielectric layer is preferably a sintered body obtained by sintering a mixture in which a magnetic material is added to the dielectric body.

The hybrid dielectric layer may include 95 to 99.999% by weight of the dielectric and 0.001 to 5% by weight of the magnetic material.

In this case, it is more preferable that the hybrid dielectric layer includes 98 to 99.99% by weight of the dielectric and 0.01 to 2% by weight of the magnetic material.

The hybrid dielectric layer is made of a plurality of layers, and the electrode pattern passes through a horizontal portion disposed on at least one of one surface and the other surface of the hybrid dielectric layer made of the plurality of layers, and the horizontal portion passes through the hybrid dielectric layer made of the plurality of layers. It may have at least one through part connecting the parts.

An electronic component having a performance enhancing hybrid inductor using a composite material according to an embodiment of the present invention for achieving the above object includes an inductor; And at least one electronic device connected to the inductor, wherein the inductor includes a hybrid dielectric layer in which a dielectric material and a magnetic material are mixed; And an electrode pattern disposed in the hybrid dielectric layer, wherein the hybrid dielectric layer is a mixture in which a magnetic material is added to the dielectric.

The performance enhancing hybrid inductor using the composite material according to the present invention and an electronic component having the same have derived the optimum composition ratio of dielectric and magnetic material exhibiting a high Q value, which is an advantage of a ferrite inductor, while maintaining basic characteristics of the dielectric inductor.

As a result, the performance-enhancing hybrid inductor using the composite material according to the present invention and the electronic component having the same can maintain the basic characteristics of the dielectric inductor by changing the material to a hybrid dielectric layer in which a dielectric material and a magnetic material are mixed. Since it can have a Q value, high-frequency and low-loss characteristics suitable for 5G mobile communication can be simultaneously satisfied.

Accordingly, the performance-enhancing hybrid inductor using the composite material according to the present invention and the electronic component having the same can be implemented as a single inductor, as well as a module or component in which a large number of electronic devices such as inductors and capacitors are integrated, such as bandpass. It is applied to circuit configurations such as filters, resonators, power amplifiers, and oscillators, and can be used to improve the performance of the entire circuit.

1 is a schematic diagram for explaining the characteristics of a conventional inductor.
2 is a schematic diagram showing characteristics of a conventional dielectric inductor and a magnetic inductor.
3 is a diagram showing an inductor structure in which magnetic materials and dielectrics are alternately stacked.
4 is a schematic diagram showing a common mode filter structure.
5 is a photograph showing a common mode filter product.
6 is a perspective view showing a performance enhanced hybrid inductor using a composite material according to an embodiment of the present invention.
7 is a schematic diagram for explaining the hybrid dielectric layer of FIG. 6.
8 is a photograph showing an inductor manufactured according to Examples 1 to 5 and Comparative Example 1.
9 is a photograph showing the results of an electrode reaction experiment for a hybrid dielectric layer prepared according to Examples 1 to 4.
10 is a graph showing results of measuring inductance values for each frequency for inductors manufactured according to Examples 1 to 5 and Comparative Example 1. FIG.
11 is a graph showing a result of measuring a Q value for each frequency of an inductor manufactured according to Examples 1 to 5 and Comparative Example 1. FIG.

Advantages and features of the present invention, and a method of achieving them will become apparent with reference to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in a variety of different forms, only this embodiment is to complete the disclosure of the present invention, and the general knowledge in the technical field to which the present invention pertains. It is provided to completely inform the scope of the invention to those who have it, and the invention is only defined by the scope of the claims. The same reference numerals refer to the same elements throughout the specification.

Hereinafter, with reference to the accompanying drawings, a performance enhancing hybrid inductor using a composite material and an electronic component having the same according to a preferred embodiment of the present invention will be described in detail as follows.

6 is a perspective view showing a performance enhanced hybrid inductor using a composite material according to an embodiment of the present invention, and FIG. 7 is a schematic diagram for explaining the hybrid dielectric layer of FIG. 6.

6 and 7, the performance enhancement hybrid inductor 100 using a composite material according to an embodiment of the present invention can implement a high Q value, which is an advantage of a ferrite inductor, while maintaining basic characteristics of a dielectric inductor. Designed to do.

In the inductor 100 used as one of the passive components for 5G mobile communication, the Q value is a very important component, and the Q value of the inductor 100 is the largest factor determining the Q value of the circuit when designing a circuit. The inductor 100 having a high Q value while maintaining the basic characteristics of the dielectric inductor was developed by changing the material to the hybrid dielectric layer 120 in which the magnetic material is mixed.

Accordingly, the performance enhancing hybrid inductor 100 using a composite material according to an embodiment of the present invention can simultaneously satisfy high-frequency and low-loss characteristics suitable for 5G mobile communication.

To this end, the performance enhancement hybrid inductor 100 using a composite material according to an embodiment of the present invention includes a hybrid dielectric layer 120 and an electrode pattern 140.

The hybrid dielectric layer 120 is a mixture of the dielectric 122 and the magnetic material 124. Here, the hybrid dielectric layer 120 is more preferably a mixture in which the magnetic material 124 is added to the dielectric 122.

At this time, the dielectric 122 is made of a ceramic material. For example, as the dielectric 122, a ceramic material containing ZnO as a main component may be used, and various additives (eg, oxides of Bi, Sb, Ag, Mn, Co, Zr, Cr, Al, etc.) are further added. Thus, it is possible to implement the required inductor characteristics and control the bonding properties and shrinkage. Accordingly, the dielectric 122 may be formed of a ceramic material alone, or a mixture in which various additives are further added to the ceramic material may be used.

In addition, the magnetic body 124 is made of a ferrite material. As an example, the magnetic body 124 may be made of a ferrite material containing Fe-Ni-Zn as a main component, and a required inductance may be controlled by adjusting a component and content. In addition, the magnetic body 124 may further add various additives (eg, oxides such as Bi, Co, Si, or Cu) to control bonding properties and shrinkage during firing. Accordingly, the magnetic body 124 may be formed of a ferrite material alone, or a mixture in which various additives are further added to the ferrite material may be used.

The hybrid dielectric layer 120 described above is more preferably a sintered body obtained by sintering a mixture in which the magnetic material 124 is added to the dielectric material 122.

The hybrid dielectric layer 120 preferably includes 95 to 99.999% by weight of the dielectric 122 and 0.001 to 5% by weight of the magnetic material 124, and in a more preferable range, 98 to 99.99% by weight of the dielectric 122 and the magnetic material ( 124) 0.01 to 2% by weight can be presented.

When the magnetic material 124 is added in a small amount less than 0.001% by weight of the total weight of the hybrid dielectric layer 120, it exhibits low-capacity and high-frequency characteristics similar to the dielectric inductor, and thus can exhibit a low Q value. Conversely, when a large amount of the magnetic material 124 is added in excess of 5% by weight of the total weight of the hybrid dielectric layer 120, it exhibits high capacity and low frequency characteristics similar to the ferrite inductor, and thus does not exhibit the advantages of containing the dielectric 122. there is a problem.

As described above, in the present invention, by controlling the proportion of the magnetic material 124 of the hybrid dielectric layer 120 to an optimum content ratio, a high Q value, which is an advantage of the ferrite dielectric, can be obtained while maintaining the characteristics of the dielectric inductor.

The electrode pattern 140 is disposed in the hybrid dielectric layer 120. These electrode patterns 140 include copper (Cu), tungsten (W), cobalt (Co), nickel (Ni), titanium (Ti), aluminum (Al), gold (Au), silver (Ag), and chromium (Cr). ) May be formed of one or more materials, but is not limited thereto, and any metallic material having conductivity may be used without limitation.

Here, the hybrid dielectric layer 120 may be formed of a plurality of layers. In this case, the electrode pattern 140 may have a horizontal portion 142 and a through portion 144. The horizontal portion 142 of the electrode pattern 140 is disposed on at least one of one surface and the other surface of the hybrid dielectric layer 120 formed of a plurality of layers. At least one through portion 144 of the electrode pattern 140 is disposed to penetrate the hybrid dielectric layer 120 formed of a plurality of layers and connect the horizontal portion 142.

Meanwhile, an electronic component having a performance enhancing hybrid inductor using a composite material according to an embodiment of the present invention includes a hybrid inductor and an electronic device.

Here, at least one electronic device is connected to the hybrid inductor.

In this case, the hybrid inductor is substantially the same as the hybrid inductor described with reference to FIGS. 7 and 8.

That is, the hybrid inductor includes a hybrid dielectric layer in which a dielectric material and a magnetic material are mixed and an electrode pattern disposed in the hybrid dielectric layer. In this case, the hybrid dielectric layer is a mixture in which a magnetic material is added to the dielectric.

As discussed so far, the performance enhancing hybrid inductor using a composite material according to an embodiment of the present invention and an electronic component having the same have an optimal dielectric material that exhibits a high Q value, which is an advantage of a ferrite inductor, while maintaining the basic characteristics of the dielectric inductor. The composition ratio of the magnetic body was derived.

As a result, the performance-enhancing hybrid inductor using the composite material and the electronic component having the same according to the embodiment of the present invention maintain the basic characteristics of the dielectric inductor while maintaining the basic characteristics of the dielectric inductor by changing the material to the hybrid dielectric layer in which the dielectric and the magnetic material are mixed. Since it can have a high Q value, which is an advantage, high-frequency and low-loss characteristics suitable for 5G mobile communication can be simultaneously satisfied.

Accordingly, the performance-enhancing hybrid inductor using the composite material according to an embodiment of the present invention and an electronic component having the same can be implemented as a single inductor, as well as a module or component in which a large number of electronic devices such as inductors and capacitors are integrated, such as , Bandpass filter, resonator, power amplifier, oscillator, etc. can be applied to the circuit configuration to improve the overall performance of the circuit.

Example

Hereinafter, the configuration and operation of the present invention will be described in more detail through preferred embodiments of the present invention. However, this is presented as a preferred example of the present invention and cannot be construed as limiting the present invention in any sense.

Contents not described herein can be sufficiently technically inferred by those skilled in the art, and thus description thereof will be omitted.

1. Inductor manufacturing

Example 1

A hybrid inductor was manufactured using a hybrid dielectric layer composed of 99.5 wt% dielectric and 0.5 wt% ferrite.

Example 2

A hybrid inductor was manufactured using a hybrid dielectric layer composed of 99.0 wt% dielectric and 1.0 wt% ferrite.

Example 3

A hybrid inductor was manufactured using a hybrid dielectric layer composed of 98.5 wt% dielectric and 1.5 wt% ferrite.

Example 4

A hybrid inductor was manufactured using a hybrid dielectric layer composed of 98.0 wt% dielectric and 2.0 wt% ferrite.

Example 5

A hybrid inductor was manufactured using a hybrid dielectric layer composed of 97.5 wt% dielectric and 2.5 wt% ferrite.

Comparative Example 1

A dielectric inductor was manufactured using a dielectric layer composed of 100 wt% dielectric.

2. Property evaluation

8 is a photograph showing an inductor according to Examples 1 to 5 and Comparative Example 1.

As shown in FIG. 8, actual photographs of the inductors manufactured according to Examples 1 to 5 and Comparative Example 1 are shown.

At this time, the inductor manufactured according to Examples 1 to 5 uses a hybrid dielectric layer composed of 0.5wt%, 1.0wt, 1.5wt%, 2.0wt%, and 3.0wt% magnetic material, respectively, and manufactured according to Comparative Example 1. The inductor uses a dielectric layer composed of 100 wt% of dielectric.

On the other hand, Figure 9 is a photograph showing the electrode reaction test results for the hybrid dielectric layer prepared according to Examples 1 to 4.

As shown in FIG. 9, the hybrid dielectric layers prepared according to Examples 1 to 4 include 99.5 wt% dielectric and 0.5 wt% magnetic material, 99 wt% dielectric material and 1.0 wt% magnetic material, 98.5 wt% dielectric material and 1.5 wt% magnetic material, and dielectric material. It can be seen that the electrode pattern and the simultaneous firing were made without cracking by controlling the optimum fraction each composed of 98 wt% and 2.0 wt% of the magnetic material.

Meanwhile, FIG. 10 is a graph showing a result of measuring an inductance value for each frequency for inductors manufactured according to Examples 1 to 5 and Comparative Example 1.

As shown in FIG. 10, in the case of the inductor manufactured according to Examples 1 to 4, it can be seen that the inductance value was mostly increased in the frequency band of 0 to 1200 MHz compared to the inductor manufactured according to Comparative Example 1. However, in the case of Example 5 in which a large amount of the magnetic material was added at 3 wt%, it was confirmed that the inductance value was similar to that of the inductor manufactured according to Comparative Example 1.

11 is a graph showing results of measuring Q values for each frequency of inductors manufactured according to Examples 1 to 5 and Comparative Example 1.

As shown in FIG. 11, in the case of the inductor manufactured according to Examples 1 to 4, it can be seen that the Q value is mostly increased in the frequency band of 0 to 1200 MHz compared to the inductor manufactured according to Comparative Example 1. However, in the case of Example 5 in which a large amount of the magnetic material was added in an amount of 3 wt%, it was confirmed that the Q value was similar to that of the inductor manufactured according to Comparative Example 1.

In particular, the Q maximum value of the inductor manufactured according to Comparative Example 1 was measured to be 14, but the Q maximum value of the inductor manufactured according to Example 3 was measured to be 17.2, so that the Q maximum value of the inductor manufactured according to Example 3 It was confirmed that this increased by about 20%.

In the above, the embodiments of the present invention have been described mainly, but various changes or modifications can be made at the level of those of ordinary skill in the art to which the present invention pertains. Such changes and modifications can be said to belong to the present invention as long as they do not depart from the scope of the technical idea provided by the present invention. Therefore, the scope of the present invention should be determined by the claims set forth below.

100: hybrid inductor 120: hybrid dielectric layer
122: dielectric 124: magnetic material
140: electrode pattern 142: horizontal portion of the electrode pattern
144: penetration portion of the electrode pattern

Claims (7)

A hybrid dielectric layer in which a dielectric material and a magnetic material are mixed; And
Includes; an electrode pattern disposed in the hybrid dielectric layer,
The hybrid dielectric layer is a mixture in which a magnetic material is added to a dielectric material, the dielectric material is a ceramic material, the magnetic material is a ferrite material,
The hybrid dielectric layer uses 98 to 99.99% by weight of the dielectric and 0.01 to 2% by weight of the magnetic material to obtain a Q value higher than the Q value of the dielectric inductor made of 100% by weight of the dielectric, which is an advantage of the ferrite dielectric while maintaining the characteristics of the dielectric inductor. Performance enhancement type hybrid inductor using a composite material comprising a.
delete The method of claim 1,
The hybrid dielectric layer is
A performance enhancing hybrid inductor using a composite material, characterized in that a sintered body obtained by sintering a mixture in which a magnetic substance is added to the dielectric body.
delete delete The method of claim 1,
The hybrid dielectric layer is made of a plurality of layers,
The electrode pattern has a horizontal portion disposed on at least one of one surface and the other surface of the hybrid dielectric layer consisting of a plurality of layers, and at least one penetration portion connecting the horizontal portion through the hybrid dielectric layer consisting of the plurality of layers. Performance-enhancing hybrid inductor using a composite material made of
Hybrid inductor; And
Includes; at least one electronic device connected to the hybrid inductor,
The hybrid inductor may include a hybrid dielectric layer in which a dielectric material and a magnetic material are mixed; And an electrode pattern disposed in the hybrid dielectric layer,
The hybrid dielectric layer is a mixture in which a magnetic material is added to a dielectric material, the dielectric material is a ceramic material, the magnetic material is a ferrite material,
The hybrid dielectric layer contains 98 to 99.99% by weight of the dielectric and 0.01 to 2% by weight of the magnetic material in order to obtain a Q value higher than the Q value of the dielectric inductor made of 100% by weight of the dielectric, which is an advantage of the ferrite dielectric while maintaining the characteristics of the dielectric inductor. Electronic component having a performance-enhancing hybrid inductor using a composite material, characterized in that to include.

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