Coil component

A coil component includes a support substrate; a coil portion disposed on the support substrate; a body embedding the support substrate and the coil portion therein, and having a first surface and a second surface opposing each other, a third surface and a fourth surface opposing each other and respectively connecting the first and second surfaces; lead-out portions extending from the coil portion and respectively exposed from the third and fourth surfaces of the body; a surface-insulating layer disposed on the third and fourth surfaces of the body and having openings respectively exposing the lead-out portions; and external electrodes arranged on the surface-insulating layer and respectively connected to the lead-out portions respectively exposed through the openings, wherein a width of each of the external electrodes is narrower than a width of the body.

CROSS-REFERENCE TO RELATED APPLICATION(S)

This application claims the benefit of priority to Korean Patent Application No. 10-2019-0178323 filed on Dec. 30, 2019 in the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference in its entirety.

TECHNICAL FIELD

The present disclosure relates to a coil component.

BACKGROUND

An inductor, a coil component, is a typical passive electronic component used in electronic devices, along with a resistor and a capacitor.

In the case of a thin-film coil component, a coil portion may be formed by a plating process, a magnetic powder-resin composite in which a magnetic powder and a resin are mixed may be cured to prepare a body, and an external electrode may be formed outside the body, to manufacture the thin-film coil component.

However, when the body is prepared using the magnetic metal powder as described above, and the external electrode is formed on the outside of the body by the plating process, parasitic capacitance may occur between the coil portion and the external electrode.

SUMMARY

An aspect of the present disclosure is to reduce parasitic capacitance by adjusting a distance between a coil portion and an external electrode or a contact area between a body and an external electrode.

Another aspect of the present disclosure is to efficiently prevent reduction of a magnetic body volume of a body.

According to an aspect of the present disclosure, a coil component includes a support substrate; a coil portion disposed on the support substrate; a body embedding the support substrate and the coil portion therein, and having a first surface and a second surface opposing each other, a third surface and a fourth surface opposing each other and respectively connecting the first and second surfaces, and a fifth surface and a sixth surface opposing each other and respectively connecting the first to fourth surfaces; a first lead-out portion and a second lead-out portion, extending from the coil portion and respectively exposed from the third and fourth surfaces of the body; a surface-insulating layer disposed on the third and fourth surfaces of the body and having openings respectively exposing the first and second lead-out portions; and a first external electrode and a second external electrode, arranged on the surface-insulating layer and respectively connected to the first and second lead-out portions respectively exposed to the openings, wherein a width of each of the first and second external electrodes is narrower than a width of the body.

DETAILED DESCRIPTION

The drawings may not be to scale, and the relative size, proportions, and depiction of elements in the drawings may be exaggerated for clarity, illustration, and convenience.

A value used to describe a parameter such as a 1-D dimension of an element including, but not limited to, “length,” “width,” “thickness,” diameter,” “distance,” “gap,” and/or “size,” a 2-D dimension of an element including, but not limited to, “area” and/or “size,” a 3-D dimension of an element including, but not limited to, “volume” and/or “size”, and a property of an element including, not limited to, “roughness,” “density,” “weight,” “weight ratio,” and/or “molar ratio” may be obtained by the method(s) and/or the tool(s) described in the present disclosure. The present disclosure, however, is not limited thereto. Other methods and/or tools appreciated by one of ordinary skill in the art, even if not described in the present disclosure, may also be used.

In the drawings, the X direction may be defined as a first direction or a longitudinal direction, a Y direction as a second direction or a width direction, and a Z direction as a third direction or a thickness direction.

Hereinafter, a coil component according to an exemplary embodiment will be described in detail with reference to the accompanying drawings, and in describing with reference to the accompanying drawings, the same or corresponding components are assigned the same reference numbers, and overlapped descriptions thereof will be omitted.

Various types of electronic components are used in electronic devices, and various types of coil components may be appropriately used to remove noise between the electronic components.

For example, in electronic devices, coil components may be used as power inductors, high-frequency (HF) inductors, general beads, high-frequency beads (GHz Beads), and common mode filters.

Hereinafter, exemplary embodiments will be described on the premise that a coil component according to an exemplary embodiment is a power inductor used in a power line of a power supply circuit. However, the coil component according to an exemplary embodiment may be suitably applied as a chip bead, a chip filter, or the like as well as a power inductor.

First Embodiment

FIG.1is a view schematically illustrating a coil component according to a first embodiment of the present disclosure.FIG.2is a view schematically illustrating a layout structure of a surface-insulating layer and an external electrode formed on the coil component ofFIG.1.FIG.3is a cross-sectional view taken along line I-I′ ofFIG.1.FIG.4is a cross-sectional view taken along line II-II′ ofFIG.1.

FIG.1mainly illustrates a body applied to a coil component according to a first embodiment of the present disclosure, andFIG.2mainly illustrates a surface-insulating layer and an external electrode applied to a coil component according to a first embodiment of the present disclosure.

Referring toFIGS.1to4, a coil component1000according to a first embodiment of the present disclosure may include a body100, a support substrate200, first and second coil portions310and320, first and second lead-out portions410and410, a surface-insulating layer500, first and second external electrodes610and620, and first and second auxiliary lead-out portions810and820.

The body100may form an exterior of the coil component1000according to this embodiment, and may embed the support substrate200and the first and second coil portions310and320, described later, therein.

The body100may be formed to have a hexahedral shape overall.

Referring toFIG.1, the body100may include a third surface103and a fourth surface104opposing each other in a length direction X, a first surface101and a second surface102opposing each other in a thickness direction Z, and a fifth surface105and a sixth surface106opposing each other in a width direction Y. Each of the first surface101and the second surface102of the body100opposing each other may connect the third surface103and the fourth surface104of the body100opposing each other. Each of the fifth surface105and the sixth surface106of the body100opposing each other may connect the first surface101to the fourth surface104of the body100opposing each other.

The body100may be formed such that the coil component1000according to this embodiment in which the external electrodes610and620to be described later are formed has a length of 2.0 mm, a width of 1.2 mm, and a thickness of 0.8 mm, a length of 1.6 mm, a width of 0.8 mm, and a thickness of 0.8 mm, or a length of 0.2 mm, a width of 0.25 mm, and a thickness of 0.4 mm, but is not limited thereto. Since the above-described numerical values do not take into account errors in the process, cases in which values are different from the above-mentioned values due to the errors in the process belong to the scope of the present disclosure.

The body100may include a magnetic material and a resin. Specifically, the body100may be formed by stacking at least one magnetic composite sheet including the resin and the magnetic material dispersed in the resin, and then curing the magnetic composite sheet. The body100may have a structure other than the structure in which the magnetic material may be dispersed in the resin. For example, the body100may be made of a magnetic material such as ferrite.

The magnetic material may be, for example, a ferrite powder particle or a magnetic metal powder particle.

Examples of the ferrite powder particle may include at least one or more of spinel type ferrites such as Mg—Zn-based ferrite, Mn—Zn-based ferrite, Mn—Mg-based ferrite, Cu—Zn-based ferrite, Mg—Mn—Sr-based ferrite, Ni—Zn-based ferrite, and the like, hexagonal ferrites such as Ba—Zn-based ferrite, Ba—Mg-based ferrite, Ba—Ni-based ferrite, Ba—Co-based ferrite, Ba—Ni—Co-based ferrite, and the like, garnet type ferrites such as Y-based ferrite, and the like, and Li-based ferrites.

The magnetic metal powder particle may include one or more selected from the group consisting of iron (Fe), silicon (Si), chromium (Cr), cobalt (Co), molybdenum (Mo), aluminum (Al), niobium (Nb), copper (Cu), and nickel (Ni). For example, the magnetic metal powder particle may be at least one or more of a pure iron powder, a Fe—Si-based alloy powder, a Fe—Si—Al-based alloy powder, a Fe—Ni-based alloy powder, a Fe—Ni—Mo-based alloy powder, a Fe—Ni—Mo—Cu-based alloy powder, a Fe—Co-based alloy powder, a Fe—Ni—Co-based alloy powder, a Fe—Cr-based alloy powder, a Fe—Cr—Si-based alloy powder, a Fe—Si—Cu—Nb-based alloy powder, a Fe—Ni—Cr-based alloy powder, and a Fe—Cr—Al-based alloy powder.

The metallic magnetic material may be amorphous or crystalline. For example, the magnetic metal powder particle may be a Fe—Si—B—Cr-based amorphous alloy powder, but is not limited thereto.

The ferrite powder and the magnetic metal powder particle may have an average diameter of about 0.1 μm to 30 μm, respectively, but are not limited thereto. The term “diameter” as used herein refers to the largest dimension of a given particle. The term “average diameter” as used herein refers to an average of the diameters of particles in a given amount of the magnetic metal powder.

The body100may include two or more types of magnetic materials dispersed in a resin. In this case, the term “different types of magnetic material” means that the magnetic materials dispersed in the resin are distinguished from each other by average diameter, composition, crystallinity, and a shape.

The resin may include an epoxy, a polyimide, a liquid crystal polymer, or the like, in a single form or in combined forms, but is not limited thereto.

The body100may include the first and second coil portions310and320, and a core110passing through the support substrate200to be described later. The core110may be formed by filling the magnetic composite sheet with through-holes of the first and second coil portions310and320, but is not limited thereto.

The support substrate200may be embedded in the body100, and may include one surface and the other surface opposing each other. In this embodiment, the one surface of the support substrate200refers to a lower surface of the support substrate200, and the other surface of the support substrate200refers to an upper surface of the support substrate200, respectively.

The support substrate200may have a thickness of 10 μm or more and 60 μm or less.

The support substrate200may be formed of an insulating material including a thermosetting insulating resin such as an epoxy resin, a thermoplastic insulating resin such as polyimide, or a photosensitive insulating resin, or may be formed of an insulating material in which a reinforcing material such as a glass fiber or an inorganic filler is impregnated with such an insulating resin. For example, the support substrate200may be formed of an insulating material such as prepreg, Ajinomoto Build-up Film (ABF), FR-4, a bismaleimide triazine (BT) film, a photoimageable dielectric (PID) film, and the like, but is not limited thereto.

As the inorganic filler, at least one or more selected from a group consisting of silica (SiO2), alumina (Al2O3), silicon carbide (SiC), barium sulfate (BaSO4), talc, mud, a mica powder, aluminum hydroxide (Al(OH)3), magnesium hydroxide (Mg(OH)2), calcium carbonate (CaCO3), magnesium carbonate (MgCO3), magnesium oxide (MgO), boron nitride (BN), aluminum borate (AlBO3), barium titanate (BaTiO3), and calcium zirconate (CaZrO3) may be used.

When the support substrate200is formed of an insulating material including a reinforcing material, the support substrate200may provide better rigidity. When the support substrate200is formed of an insulating material not containing glass fibers, the support substrate200may be advantageous for reducing a thickness of the overall coil portions310and320. When the support substrate200is formed of an insulating material containing a photosensitive insulating resin, the number of processes for forming the first and second coil portions310and320may be reduced. Therefore, it may be advantageous in reducing production costs, and a fine via may be formed.

The first and second coil portions310and320may be disposed on the one surface and the other surface of the support substrate200, with respect to the support substrate200, respectively, and may express characteristics of the coil component. For example, when the coil component1000of this embodiment is used as a power inductor, the first and second coil portions310and320may function to stabilize the power supply of an electronic device by storing an electric field as a magnetic field and maintaining an output voltage.

Referring toFIGS.1to4, each of the first coil portion310and the second coil portion320may have a planar spiral shape in which at least one turn is formed around the core110. For example, the first coil portion310may form at least one turn about an axis of the core110on the one surface of the support substrate200.

The first and second coil portions310and320may include a coil pattern having a planar spiral shape, and the first and second coil portions310and320arranged on both surfaces of the support substrate200opposing each other may be electrically connected to a via electrode900formed on the support substrate200.

The first and second coil portions310and320and the via electrode900may be formed of a metal having excellent electrical conductivity, and, may be formed of, for example, silver (Ag), palladium (Pd), aluminum (Al), nickel (Ni), titanium (Ti), gold (Au), copper (Cu), platinum (Pt), alloys thereof, or the like.

The first and second lead-out portions410and420may extend from the coil portions310and320, and may be exposed from the third and fourth surfaces103and104, respectively, of the body100. Referring toFIGS.1to3, one end of the first coil portion310may extend onto the one surface of the support substrate200to form the first lead-out portion410, and the first lead-out portion410may be exposed from the third surface103of the body100. In addition, one end of the second coil portion320may extend onto the other surface of the support substrate200to form the second lead-out portion420, and the second lead-out portion420may be exposed from the fourth surface104of the body100.

The first and second auxiliary lead-out portions810and820may be arranged to correspond to the first and second lead-out portions410and420on the other surface and the one surface of the support substrate200. Referring toFIG.3, the first lead-out portion410may be disposed on the one surface of the support substrate200, and the first auxiliary lead-out portion810may be disposed on the other surface of the support substrate200. The second lead-out portion420may be disposed on the other surface of the support substrate200, and the second auxiliary lead-out portion820may be disposed on the one surface of the support substrate200. Although not illustrated in detail, a connecting via (not illustrated) connecting the first lead-out portion410and the first auxiliary lead-out portion810and a connecting via (not illustrated) connecting the second lead-out portion420and the second auxiliary lead-out portion820may be formed respectively. As a result, the first lead-out portion410and the first auxiliary lead-out portion810, and the second lead-out portion420and the second auxiliary lead-out portion820may be electrically connected to each other.

The first auxiliary lead-out portion810may be disposed to correspond to the first lead-out portion410based on the support substrate200, and the second auxiliary lead-out portion820may be disposed to correspond to the second lead-out portion420based on the support substrate200. The first and second auxiliary lead-out portions810and820together with the first and second lead-out portions410and420may be exposed from a surface of the body100. Therefore, the first and second external electrodes610and620may not only be formed on the exposed surfaces of the first and second lead-out portions410and420, but also formed on the exposed surfaces of the first and second auxiliary lead-out portions810and820. Therefore, an area of the surface of the body100in which metal bonding with the first and second external electrodes610and620occurs may be increased, to increase coupling force between the body100and the first and second external electrodes610and620.

At least one of the coil portions310and320, the via electrode900, the lead-out portions410and420, and the auxiliary lead-out portions810and820may include at least one conductive layer.

For example, when the first coil portion310, the first lead-out portion410, the first auxiliary lead-out portion810, and the via electrode900are formed on the one surface of the support substrate100by a plating process, the first coil portion310, the first lead-out portion410, the first auxiliary lead-out portion810, and the via electrode900may include a seed layer, such as an electroless plating layer or the like, and an electroplating layer, respectively. In this case, the electroplating layer may have a single layer structure or a multilayer structure. The electroplating layer of the multilayer structure may be formed as a conformal film structure in which one electroplating layer may be covered by the other electroplating layer, and may be only formed in a structure in which the other electroplating layer is stacked on one surface of anyone electroplating layer. In the above-described example, the seed layer of the first coil portion310, the seed layer of the first lead-out portion410, the seed layer of the first auxiliary lead-out portion810, and the seed layer of the via electrode900may be integrally formed so as not to form a boundary therebetween, but are not limited thereto. In the above-described example, the electroplating layer of the first coil portion310, the electroplating layer of the first lead-out portion410, the electroplating layer of the first auxiliary lead-out portion810, and the electroplating layer of the via electrode900may be integrally formed so as not to form a boundary therebetween, but are not limited thereto.

Each of the coil portions310and320, the lead-out portions410and420, the auxiliary lead-out portions810and820, and the via electrode900may be formed of a conductive material such as copper (Cu), aluminum (Al), silver (Ag), tin (Sn), gold (Au), nickel (Ni), lead (Pb), titanium (Ti), or alloys thereof, but is not limited thereto.

The surface-insulating layer500may be disposed on a surface of the body100, and may have an opening P exposing the first and second lead-out portions410and420. The opening P may refer to a region in which the first and second lead-out portions410and420are exposed from the third surface103and the fourth surface104of the body100as described below.

Referring toFIGS.1and3, the surface-insulating layer500may include a first surface-insulating layer510formed in a region, except for a region of the third surface103and the fourth surface104of the body100from which the first and second lead-out portions410and420are exposed, and a second surface-insulating layer520disposed on the first surface101, the second surface102, the fifth surface105, and the sixth surface106of the body100.

Referring toFIGS.1and3, the second surface-insulating layer520may be formed to reach both end portions opposing each other on each of the first surface101, the second surface102, the fifth surface105, and the sixth surface106of the body100in the length direction X.

The surface-insulating layer500may be formed of an insulating material. For example, the insulating material may be a thermosetting resin such as an epoxy resin, a thermoplastic resin such as polyimide, or a photosensitive resin, or a liquid crystal crystalline polymer (LCP), but is not limited thereto. For example, the surface-insulating layer500may be formed as a plating resist for plating the first and second external electrodes610and620which will be described later. In addition, the surface-insulating layer500may be formed by applying or printing the insulating material on the surface of the body100. Therefore, the surface-insulating layer500may be formed in a region of the surface of the body100, except for regions from which the first and second lead-out portions410and420are exposed. The surface-insulating layer500may be formed as a thin parylene film, and may be formed using various insulating materials such as silicon oxide film (SiO2), silicon nitride film (Si3N4), silicon oxynitride film (SiON), or the like. When the surface-insulating layer500is formed with these materials using a variety of processes, such as a vapor deposition process. As a result, the surface-insulating layer500may be disposed to continuously cover the magnetic metal powder particles and the resin of the body100on a surface of the body100.

Recently, as mobile communications speed increases, driving frequency of a coil component used in a mobile device may also increase. In order to use the coil component smoothly in a high frequency zone, there may be a need to reduce parasitic capacitance in the coil component. The parasitic capacitance in the coil component1000may be shorter, as the longer a distance between the coil portion310or320and the external electrode610or620, or as the larger a contact area between the body100and the external electrode610or620. In this embodiment, the surface-insulating layer500may be formed on a surface of the body100, to increase the distance between the coil portion310or320and the external electrode610or620. Therefore, parasitic capacitance generated between the coil portion310or320and the external electrode610or620may be minimized.

The first and second external electrodes610and620may be disposed on a surface of the body100to cover the first and second lead-out portions410and420. For example, each of the first and second external electrodes610and620may be connected to each of the first and second lead-out portions410and420disposed on the surface-insulating layer500, and may be exposed by the opening P.

Referring toFIGS.1to3, since the first lead-out portion410is exposed from the third surface103of the body100, the first external electrode610may be formed on the third surface103of the body100to contact the first lead-out portion410. Since the second lead-out portion420is exposed from the fourth surface104of the body100, the second external electrode620may be formed on the fourth surface104of the body100to contact the second lead-out portion420. Although not specifically illustrated, a width of each of the first and second external electrodes610and620may be narrower than a width of the body100. In this embodiment, the width of the body100may refer to a distance between the fifth surface105and the sixth surface106of the body100opposing each other, for example, a distance in the width direction Y. Referring toFIG.1, since a width of each of the first and second external electrodes610and620refers to a distance between the fifth surface105and the sixth surface106of the body100on the third surface103and the fourth surface104of the body100, the width of each of the first and second external electrodes610and620may be narrower than a width of the body100. As described above, parasitic capacitance in the coil component1000may increase, as a contact area between the body100and the external electrodes610and620increases. In this embodiment, a contact area between the body100and the external electrodes610and620on the first surface101and the second surface102may be reduced to minimize parasitic capacitance generated between the body100and the external electrodes610and620.

Referring toFIG.3, each of the first and second external electrodes610and620may include first metal layers611and621directly contacting the first and second lead-out portions410and420and filling the opening P. Referring toFIG.2, a width of the first metal layer611formed on the third surface103and a width of the first metal layer621formed on the fourth surface104may be respectively narrower than the width of the body100. In addition, on the third surface103and the fourth surface104of the body100, the widths of the first metal layers611and621may correspond to the widths of the first and second lead-out portions410and420, respectively. As described above, parasitic capacitance in the coil component1000may increase, as a contact area between the body100and the external electrodes610and620increases. In this embodiment, to the extent that electrical connectivity between the first metal layers611and621and the first and second lead-out portions410and420is secured, a contact area between the body100and the external electrodes610and620on the third surface103and the fourth surface104may be reduced to minimize parasitic capacitance generated between the body100and the external electrodes610and620.

Since the first metal layers611and621may be formed directly on a surface of the body100by a plating process, the first metal layers611and621may be made of metal. The first metal layers611and621may be a copper (Cu) metal layer having excellent electrical conductivity and relatively low material cost, but are not necessarily limited thereto. Since the first metal layers611and621may be formed by a plating process, they may not include a glass component or a resin. Typically, when the body100is manufactured by curing a magnetic metal powder-resin composite, the external electrodes610and620may be formed by using a conductive resin paste including a conductive metal and a resin. In this case, the conductive metal included in the conductive resin paste may mainly use silver (Ag) having a relatively low specific resistance. Since the silver (Ag) has a relatively high material cost and frequent contact failure between the silver (Ag) and the coil portions310and320, contact resistance may be excessively increased. In this embodiment, since the first metal layers611and621are directly formed on the surface of the body100, poor contact between the coil portions310and320and the external electrodes610and620may be prevented. In addition, when the external electrodes610and620are formed using the conductive resin paste, it may be difficult to control the coating thickness of the conductive resin paste such that the external electrodes610and620may be formed thick, to increase a volume of the body100. This decreasing problem exists. Since the external electrodes610and620of this embodiment may be formed by plating metal on a surface of the body100, thicknesses of the external electrodes610and620may be adjusted to be thinner. Therefore, a volume of the body100may be increased, and inductance characteristics of the coil component in total may be improved.

Referring toFIG.3, the first and second external electrodes610and620may further include conductive resin layers612and622respectively disposed on the first surface101or the second surface102of the body100and formed between the first metal layers611and621. The conductive resin layers612and622may include one or more conductive metals selected from the group consisting of copper (Cu), nickel (Ni), and silver (Ag), and a thermosetting resin. The conductive resin layers612and622may be formed by applying and curing a conductive paste containing a conductive metal such as silver (Ag) or the like and a resin. Referring toFIG.3, the conductive resin layers612and622may extend onto the first surface101or the second surface102of the body100to be arranged between the second surface-insulating layer520and the first metal layers611and621. Although not specifically illustrated, the surface-insulating layer500may be formed on the first surface101or the second surface102of the body100as a plating resist, such that the first metal layers611and621may cover only a portion of the conductive resin layers612and622. The body100and the conductive resin layers612and622may include an epoxy resin. The thermosetting resin included in the body100and the conductive resin layers612and622may be formed of the same thermosetting resin, for example, an epoxy resin, to improve fixing strength between the body100and the external electrodes610and620.

Each of the first and second external electrodes610and620may further include second metal layers613and623disposed on the first metal layers611and621and made of a different metal from the first metal layers611and621. Referring toFIG.2, a width of the second metal layer613formed to cover the third surface103and a width of the second metal layer623formed to cover the fourth surface104may be respectively narrower than the width of the body100. In addition, the widths of the second metal layers613and623formed on the third surface103and the fourth surface104of the body100may correspond to the widths of the first and second lead-out portions410and420to cover the first and second lead-out portions410and420, respectively. In this embodiment, to the extent that electrical connectivity between the second metal layers613and623and the first and second lead-out portions410and420is secured, a contact area between the body100and the external electrodes610and620on the third surface103and the fourth surface104may be reduced to minimize parasitic capacitance generated between the body100and the external electrodes610and620. The second metal layers613and623may sequentially include a first layer (not illustrated) including nickel (Ni) or a second layer (not illustrated) including tin (Sn). The second layer (not illustrated), which may be an outermost layer of the external electrodes610and620, may be formed as a tin (Sn) plating layer, to improve adhesion to solder, when the coil component1000is mounted on a printed circuit board. In addition, the first layer (not illustrated) may be formed as a nickel (Ni) plating layer to improve connection between the first metal layers611and621made as a copper (Cu) plating layer and a second layer (not illustrated) made as a tin (Sn) plating layer.

Second Embodiment

FIG.5is a view schematically illustrating a coil component according to a second embodiment of the present disclosure.FIG.6is a view schematically illustrating a layout structure of a surface-insulating layer, an external electrode, and an additional insulating layer formed on the coil component ofFIG.5.FIG.7is a cross-sectional view taken along line ofFIG.5.

FIG.5mainly illustrates a body applied to a coil component according to a second embodiment of the present disclosure, andFIG.6mainly illustrates a surface-insulating layer, an external electrode, and an additional insulating layer, applied to a coil component according to a second embodiment of the present disclosure.

A coil component2000according to this embodiment may further include an additional insulating layer700, compared to the coil component1000according to the first embodiment of the present disclosure. Therefore, only the additional insulating layer700different from the first embodiment will be described in describing this embodiment. The remaining configuration of this embodiment may be applied as it is in the first embodiment of the present disclosure.

Referring toFIGS.5to7, a coil component2000of this embodiment may further include an additional insulating layer700respectively disposed on first metal layers611and621. The additional insulating layer700may be respectively interposed between the first metal layers611and621and second metal layers612and622. A width of the additional insulating layer700may be equal to a width of a body100. As described above, parasitic capacitance in the coil component may increase, as a distance between coil portions310and320and external electrodes610and620is shorter. In this embodiment, the additional insulating layer700may be further disposed on third and fourth surfaces103and104of the body100, to increase a distance between the coil portions310and320and the external electrodes610and620. Therefore, parasitic capacitance generated between the coil portions310and320and the external electrodes610and620may be minimized.

Referring toFIG.6, a width of the first metal layers611and621and a width of the second metal layers613and623may be respectively narrower than a width of the additional insulating layer700. For example, the second metal layers613and623may be electrically connected to first and second lead-out portions410and420through the first metal layers611and621and first and second conductive resin layers612and622, respectively. To the extent that electrical connectivity between the first metal layers611and621and the first and second lead-out portions410and420is secured, a contact area between the body100and the first metal layers611and621on the third surface103and the fourth surface104may be reduced to minimize parasitic capacitance generated between the body100and the external electrodes610and620.

The present disclosure is not limited by the above-described embodiment and the accompanying drawings, but is intended to be limited by the appended claims.

Therefore, various forms of substitution, modification, and alteration may be made by those skilled in the art without departing from the technical spirit of the present disclosure described in the claims, which may be also within the scope of the present disclosure.

According to the present disclosure, parasitic capacitance may be reduced by adjusting a distance between a coil portion and an external electrode or a contact area between a body and an external electrode.

In addition, according to the present disclosure, reduction of a magnetic body volume of a body may be effectively prevented.