Coil electronic component

Abstract

The present disclosure provides a coil electronic component including: a body including a magnetic material; three or more coils embedded in the main body; a plurality of external electrodes disposed outside the main body and connected to the three or more coils; and a spacer portion disposed between the three or more coils and having a magnetic permeability different from that of the main body, in which one of the spacer portions has a shape different from those of the remaining spacer portions among the spacer portions.

Description

Technical Field

[0001] This disclosure relates to a coil electronic assembly. Background Technology

[0002] An inductor (a type of coil electronic component) is a representative passive component that, together with resistors and capacitors, forms an electronic circuit to remove noise. It also utilizes electromagnetic properties in combination with capacitors to provide resonant circuits, filter circuits, etc., for amplifying signals in a specific frequency band.

[0003] Furthermore, as the demand for high-performance electronic devices increases, their power consumption is also rising. This increased power consumption necessitates higher switching frequencies for power management integrated circuits (PMICs) or DC-DC converters used in the power circuits of electronic devices, resulting in higher output currents and a greater use of power inductors to stabilize the output current of PMICs or DC-DC converters.

[0004] The demand for array inductors, which offer the advantage of reduced installation area, is also increasing. Array inductors consist of multiple coils arranged adjacent to each other, and there may be inductance deviations between the coils. Summary of the Invention

[0005] One aspect of this disclosure provides a coil electronics assembly capable of reducing inductance deviation between coils.

[0006] However, the problems to be solved by this disclosure are not limited to those described above, and various extensions can be made within the scope of the technical spirit included in this disclosure.

[0007] This disclosure provides a coil electronic assembly, comprising: a body comprising a magnetic material; three or more coils embedded in the body, the three or more coils including a first coil, a second coil, and a third coil; a plurality of external electrodes disposed on the outside of the body and connected to the three or more coils; and a plurality of spacers, including a first spacer disposed between the first coil and the second coil and a second spacer disposed between the second coil and the third coil, the plurality of spacers having a permeability different from that of the body, wherein the first spacer has a shape different from that of the second spacer.

[0008] The three or more coils may further include a fourth coil, wherein the first coil, the second coil, the third coil and the fourth coil are spaced apart from each other in a first direction, and the plurality of spacers may further include a third spacer, wherein the first spacer is disposed in a first region between the first coil and the second coil, the second spacer is disposed in a second region between the second coil and the third coil, and the third spacer is disposed in a third region between the third coil and the fourth coil, and the third spacer may have a shape different from (i) the shape of the first spacer or (ii) the shape of the second spacer.

[0009] The first and third intervals may have the same shape, and the second interval may have a different shape than the same shape.

[0010] In a second direction intersecting the first direction, both the first spacer and the third spacer can be spaced apart from the outer surface of the body.

[0011] The main body may include a first edge region located between the outer surface of the main body and the first coil in the second direction, a second edge region located between the outer surface of the main body and the second coil in the second direction, a third edge region located between the outer surface of the main body and the third coil in the second direction, and a fourth edge region located between the outer surface of the main body and the fourth coil in the second direction. The distance between the outer surface of the main body and the first spacing portion may be less than or equal to 1 / 3 of the average thickness of the first edge region and the second edge region in the second direction, and the distance between the outer surface of the main body and the third spacing portion may be less than or equal to 1 / 3 of the average thickness of the third edge region and the fourth edge region in the second direction.

[0012] In the second direction, the second spacer may be flush with the outer surface of the body.

[0013] In a second direction intersecting the first direction, both the first spacing portion and the third spacing portion can be flush with the outer surface of the main body.

[0014] In the second direction, the second spacer may be spaced apart from the outer surface of the body.

[0015] The body may include a first edge region located between the outer surface of the body and the first coil in the second direction, a second edge region located between the outer surface of the body and the second coil in the second direction, a third edge region located between the outer surface of the body and the third coil in the second direction, and a fourth edge region located between the outer surface of the body and the fourth coil in the second direction, and the distance between the outer surface of the body and the second spacing portion may be less than or equal to 1 / 3 of the average thickness of the second edge region and the third edge region in the second direction.

[0016] The first region, the second region, and the third region may each have a first size, a second size, and a third size in the first direction, respectively. The first interval, the second interval, and the third interval may each have a first thickness, a second thickness, and a third thickness in the first direction, respectively. The first thickness may be greater than 24% and less than 42% of the first size, the second thickness may be greater than 24% and less than 42% of the second size, and the third thickness may be greater than 24% and less than 42% of the third size.

[0017] The coil electronic assembly may further include a first support member, a second support member, a third support member, and a fourth support member. The first support member, the second support member, the third support member, and the fourth support member are embedded in the main body and spaced apart from each other. The first coil may be disposed on the first support member, the second coil may be disposed on the second support member, the third coil may be disposed on the third support member, and the fourth coil may be disposed on the fourth support member.

[0018] The coil electronic assembly may further include: a first via penetrating the first support member, a second via penetrating the second support member, a third via penetrating the third support member, and a fourth via penetrating the fourth support member. The first coil may include a first coil pattern and a second coil pattern, which are respectively disposed on a first surface and a second surface opposite to each other on the first support member and connected to each other through the first via. The second coil may include a third coil pattern and a fourth coil pattern, which are respectively disposed on a first surface and a second surface opposite to each other on the second support member and connected to each other through the second via. The third coil may include a fifth coil pattern and a sixth coil pattern, which are respectively disposed on a first surface and a second surface opposite to each other on the third support member and connected to each other through the third via. The fourth coil may include a seventh coil pattern and an eighth coil pattern, which are respectively disposed on a first surface and a second surface opposite to each other on the fourth support member and connected to each other through the fourth via.

[0019] The main body may include a stack of multiple magnetic sheets, and the first coil, the second coil, the third coil and the fourth coil may each include multiple conductor patterns disposed on the multiple magnetic sheets and connected to each other.

[0020] Each of the first coil, the second coil, the third coil, and the fourth coil may include at least one turn of wire.

[0021] The main body may include a first core penetrating the first coil, a second core penetrating the second coil, a third core penetrating the third coil, and a fourth core penetrating the fourth coil.

[0022] The coil electronics may also include an insulating layer disposed on the surface of the at least one turn of wire.

[0023] The relative permeability of each of the first spacer, the second spacer, and the third spacer may be greater than or equal to 30 and less than or equal to 40.

[0024] The first spacer portion may be spaced apart from the second spacer portion in a first direction, and in a second direction intersecting the first direction, the first spacer portion may be spaced apart from the outer surface of the body, and the second spacer portion may be flush with the outer surface of the body.

[0025] The first spacing portion may be disposed in a first region located between the first coil and the second coil, and the second spacing portion may be disposed in a second region located between the second coil and the third coil. The first region and the second region have a first size and a second size respectively in the first direction. The first spacing portion and the second spacing portion have a first thickness and a second thickness respectively in the first direction. The first thickness may be greater than 24% and less than 42% of the first size, and the second thickness may be greater than 24% and less than 42% of the second size.

[0026] The relative permeability of each of the first and second spacers may be greater than or equal to 30 and less than or equal to 40.

[0027] According to this disclosure, a coil electronics assembly is provided that can reduce the inductance deviation between multiple coils arranged adjacent to each other. Attached Figure Description

[0028] Figure 1 This is a schematic perspective view showing a coil electronics assembly according to an embodiment.

[0029] Figure 2 It shows Figure 1 A top view of the coil electronic components.

[0030] Figure 3 It shows along Figure 1 A schematic cross-sectional view taken from line I-I'.

[0031] Figure 4 It shows Figure 3 A magnified view of region A1.

[0032] Figure 5 It shows Figure 3 A magnified view of region B1.

[0033] Figure 6 It shows Figure 3 A magnified view of region C1.

[0034] Figure 7 This is a schematic cross-sectional view showing a coil electronics assembly according to another embodiment.

[0035] Figure 8 It shows Figure 7 A magnified view of region A2.

[0036] Figure 9 It shows Figure 7 A magnified view of region B2.

[0037] Figure 10 It shows Figure 7 A magnified view of region C2.

[0038] Figure 11 This is a schematic perspective view showing a coil electronics assembly according to another embodiment.

[0039] Figure 12 It shows Figure 11 A top view of the coil electronic components.

[0040] Figure 13 It is shown Figure 11 An exploded perspective view of the main body of the coil electronic component.

[0041] Figure 14 It shows along Figure 12 A schematic cross-sectional view taken from line II-II'.

[0042] Figure 15 This is a schematic cross-sectional view showing a coil electronics assembly according to another embodiment.

[0043] Figure 16 This is a schematic perspective view showing a coil electronics assembly according to another embodiment.

[0044] Figure 17 It shows along Figure 16 A schematic cross-sectional view taken from line III-III'.

[0045] Figure 18 This is a schematic cross-sectional view showing a coil electronics assembly according to another embodiment. Detailed Implementation

[0046] In the following, various embodiments of the present disclosure will be described in detail with reference to the accompanying drawings, enabling those skilled in the art to readily implement the present disclosure. The drawings and description are intended to be illustrative rather than restrictive in nature. Throughout the specification, the same reference numerals denote the same elements. Furthermore, some components in the drawings are exaggerated, omitted, or shown schematically, and the dimensions of the various components do not necessarily reflect their actual dimensions.

[0047] The accompanying drawings are provided only to facilitate the understanding of the embodiments disclosed in this specification, and should not be construed as limiting the technical spirit disclosed in this specification. It should be understood that the invention includes all modifications, equivalents and alternatives that do not depart from the technical spirit of the invention.

[0048] Ordinal terms such as "first" and "second" will be used only to describe the various components and should not be interpreted as limiting those components. These terms are only used to distinguish one component from another.

[0049] It will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" another element, the element may be directly on the other element, or there may be an intermediate element present. In contrast, when an element is referred to as being "directly on" another element, there is no intermediate element present. Furthermore, in the specification, the terms "on" or "above" indicate that the element is disposed "above" or "below" the object portion, and do not necessarily indicate that the element is disposed on the upper side of the object portion based on a direction opposite to the direction of gravity.

[0050] Furthermore, it will be understood that the terms “comprising / including” or “having” as used throughout the specification enumerate the presence of the stated features, quantities, steps, operations, components, parts, or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, steps, operations, components, parts, or combinations thereof. Therefore, unless expressly stated to the contrary, the word “comprising” and variations such as “including” or “containing” will be understood to imply the inclusion of the stated components, but do not exclude any other components.

[0051] Furthermore, throughout the instruction manual, the phrase "in a plan view" refers to the view of the object from above, and the phrase "in a cross-sectional view" refers to the view of the cross-section taken by vertically cutting the object from the side.

[0052] Furthermore, throughout the specification, "connection" can mean not only a direct connection between two or more components, but also an indirect connection between two or more components through other components; it can mean not only a physical connection, but also an electrical connection; and it can also mean a situation where two or more components are called by different names according to their location and / or function, but are an integral unit.

[0053] Figure 1 This is a schematic perspective view showing a coil electronics assembly according to an embodiment. Figure 2 It shows Figure 1 Top view of the coil electronic components. Figure 3 It shows along Figure 1 A schematic cross-sectional view taken from line I-I'. Figure 4 It shows Figure 3 A magnified view of region A1. Figure 5 It shows Figure 3 A magnified view of region B1, and Figure 6 It shows Figure 3 A magnified view of region C1.

[0054] Reference Figures 1 to 6 According to the embodiment, the coil electronics 1000 corresponds to an array-type inductor comprising a plurality of coils 111, 112, 113 and 114 spaced apart from each other.

[0055] The coil electronics assembly 1000 may include a first coil 111, a second coil 112, a third coil 113, and a fourth coil 114, but this embodiment is not limited thereto. For example, when needed, the coil electronics assembly 1000 may include three coils or more than four coils.

[0056] The coil electronics assembly 1000 may include a main body 100, a plurality of external electrodes 121, 122, 123, 124, 125, 126, 127 and 128 disposed on the outer surface of the main body 100, a plurality of coils 111, 112, 113 and 114 embedded in the main body 100, and a spacer 200.

[0057] The main body 100 may have a generally rectangular hexahedral shape, but this embodiment is not limited to this. Due to the shrinkage of magnetic powder and the like during sintering, the main body 100 may have a generally cuboid shape, rather than a perfect cuboid shape. For example, the main body 100 may have a generally cuboid shape, but the portions corresponding to the corners or vertices may each have a rounded shape.

[0058] In this embodiment, for better understanding and ease of description, the two surfaces of the body 100 that are opposite each other in the length direction (L-axis direction, first direction) are defined as the first surface S1 and the second surface S2, the two surfaces of the body 100 that are opposite each other in the width direction (W-axis direction, third direction) are defined as the third surface S3 and the fourth surface S4, and the two surfaces of the body 100 that are opposite each other in the thickness direction (T-axis direction, second direction) are defined as the fifth surface S5 and the sixth surface S6.

[0059] The length of the coil electronic component 1000 can refer to the maximum length of a cross-section taken at the center of the coil electronic component 1000 in the width direction (W-axis direction) along the length direction (L-axis direction) and thickness direction (T-axis direction) from an optical microscope photograph or scanning electron microscope (SEM) photograph, connecting the two outermost boundary lines of the coil electronic component 1000 shown in the cross-sectional photograph that are opposite each other in the length direction (L-axis direction) and parallel to the length direction (L-axis direction). Alternatively, the length of the coil electronic component 1000 can refer to the minimum length of a cross-section taken in the cross-sectional photograph, connecting the two outermost boundary lines of the coil electronic component 1000 that are opposite each other in the length direction (L-axis direction) and parallel to the length direction (L-axis direction). Optionally, the length of the coil electronic component 1000 may refer to the arithmetic mean of the lengths of at least two line segments among the two outermost boundary lines opposite each other in the length direction (L-axis direction) and parallel to the length direction (L-axis direction) of the coil electronic component 1000 shown in the above cross-sectional photograph.

[0060] The thickness of the coil electronic component 1000 can refer to the maximum value among the lengths of multiple line segments connecting the two outermost boundary lines of the coil electronic component 1000 opposite each other in the thickness direction (T-axis direction) at the center of the coil electronic component 1000 in the width direction (W-axis direction) and parallel to the thickness direction (T-axis direction). Alternatively, the thickness of the coil electronic component 1000 can refer to the minimum value among the lengths of multiple line segments connecting the two outermost boundary lines of the coil electronic component 1000 opposite each other in the thickness direction (T-axis direction) and parallel to the thickness direction (T-axis direction). Optionally, the thickness of the coil electronic component 1000 may refer to the arithmetic mean of the lengths of at least two line segments among the two outermost boundary lines of the coil electronic component 1000 that are opposite each other in the thickness direction (T-axis direction) and parallel to the thickness direction (T-axis direction) shown in the above cross-sectional photograph.

[0061] The width of the coil electronic component 1000 can refer to the maximum length of a plurality of line segments connecting the two outermost boundary lines of the coil electronic component 1000 opposite each other in the width direction (W-axis direction) and parallel to the width direction (W-axis direction) in an optical microscope or scanning electron microscope (SEM) photograph taken at the center of the coil electronic component 1000 in the thickness direction (T-axis direction) along the length direction (L-axis direction) and width direction (W-axis direction). Alternatively, the width of the coil electronic component 1000 can refer to the minimum length of a plurality of line segments connecting the two outermost boundary lines of the coil electronic component 1000 opposite each other in the width direction (W-axis direction) and parallel to the width direction (W-axis direction) in the aforementioned cross-sectional photograph. Optionally, the width of the coil electronic component 1000 may refer to the arithmetic mean of the lengths of at least two line segments among the two outermost boundary lines opposite each other in the width direction (W-axis direction) and parallel to the width direction (W-axis direction) of the coil electronic component 1000 shown in the cross-sectional photograph above.

[0062] The length, width, and thickness of the coil electronics assembly 1000 can each be measured using a micrometer measurement method. In this method, a micrometer with gage repeatability and reproducibility (R&R) can be used to measure the length by setting a zero point, inserting the coil electronics assembly 1000 according to this embodiment between the tips of the micrometer, and rotating the measuring rod of the micrometer. When measuring the length of the coil electronics assembly 1000 using this micrometer method, the length can represent a single measurement or the arithmetic mean of multiple measurements. This is equally applicable to the measurement of the width and thickness of the coil electronics assembly 1000.

[0063] Multiple coils 111, 112, 113 and 114 spaced apart from each other in the longitudinal direction (L-axis direction) and a spacer 200 may be provided in the main body 100.

[0064] Multiple coils 111, 112, 113, and 114 may have substantially the same shape. The disclosure here that coils have the same shape or substantially the same shape means that the line width, thickness, and number of turns of the coil patterns of each coil are substantially the same. Figures 1 to 3 In this embodiment, for better understanding and ease of description, the number of coil turns is expressed as approximately 1.5 turns, but this embodiment is not limited to this and can be appropriately selected by those skilled in the art considering electrical characteristics such as the required inductance and DC resistance (Rdc).

[0065] The main body 100 constitutes the shape of the coil electronic assembly 1000 and is the space in which a magnetic circuit is formed when current is applied to the first coil 111, the second coil 112, the third coil 113 and the fourth coil 114 through the multiple external electrodes 121, 122, 123, 124, 125, 126, 127 and 128. This magnetic circuit is the path through which the magnetic flux generated by the first coil 111, the second coil 112, the third coil 113 and the fourth coil 114 passes.

[0066] The main body 100 may surround and enclose the first coil 111, the second coil 112, the third coil 113, and the fourth coil 114, as well as the first support member 131, the second support member 132, the third support member 133, and the fourth support member 134, and may include magnetic material. For example, the main body 100 may include magnetic particles, and insulating material may be disposed between the magnetic particles.

[0067] The magnetic material may include first metallic magnetic particles, second metallic magnetic particles with a particle size smaller than the first metallic magnetic particles, and third metallic magnetic particles with a particle size smaller than the second metallic magnetic particles. The average particle size (D) of the first metallic magnetic particles... 50The average particle size (D) of the second metallic magnetic particles can be greater than or equal to 5 μm and less than or equal to 30 μm. 50 The particle size can be greater than or equal to 1 μm and less than or equal to 5 μm, and the average particle size (D) of the third metallic magnetic particles is... 50 It can be greater than or equal to 0.05 μm and less than or equal to 0.5 μm.

[0068] Magnetic particles can be ferrite particles or metallic magnetic particles that exhibit magnetic properties.

[0069] Ferrite particles may include, for example, at least one of spinel-type ferrites (such as Mg-Zn-based ferrites, Mn-Zn-based ferrites, Mn-Mg-based ferrites, Cu-Zn-based ferrites, Mg-Mn-Sr-based ferrites, Ni-Zn-based ferrites), hexagonal ferrites (such as Ba-Zn-based ferrites, Ba-Mg-based ferrites, Ba-Ni-based ferrites, Ba-Co-based ferrites, Ba-Ni-Co-based ferrites), garnet-type ferrites (such as yttrium (Y)-based ferrites) and Li-based ferrites.

[0070] The metallic magnetic particles may include two or more types of metallic magnetic particles with specific different compositions, and may include at least one 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 metallic magnetic particles may be at least one of pure iron, Fe-Si based alloys, Fe-Si-Al based alloys, Fe-Ni based alloys, Fe-Ni-Mo based alloys, Fe-Ni-Mo-Cu based alloys, Fe-Co based alloys, Fe-Ni-Co based alloys, Fe-Cr based alloys, Fe-Cr-Si based alloys, Fe-Si-Cu-Nb based alloys, Fe-Ni-Cr based alloys, and Fe-Cr-Al based alloys. Here, different compositions of the metallic magnetic particles may mean different amounts of the contained elements.

[0071] The metallic magnetic particles can be amorphous or crystalline. For example, the metallic magnetic particles can be Fe-Si-B-Cr based amorphous alloys, but this embodiment is not limited thereto. The metallic magnetic particles can have an average particle size in the range of about 0.1 μm to about 30 μm, but this embodiment is not limited thereto.

[0072] In the specification, the average particle size can be expressed as D... 90 D 50 Particle size distribution, expressed as such. Particle size distribution is well known to those skilled in the art; it is an index indicating the proportion of particles of a certain size (particle diameter) within a group of particles to be measured. D 50 (The particle size corresponding to 50% of the cumulative volume of the particle size distribution) refers to the average particle size.

[0073] Metallic magnetic particles can be two or more different types of metallic magnetic particles. Here, different types of metallic magnetic particles mean that the metallic magnetic particles are distinguished from each other in at least one aspect of average particle size, composition, component ratio, crystallinity, and shape.

[0074] The insulating material may include at least one of epoxy resin, polyimide, liquid crystal polymer, etc., but the embodiments are not limited thereto.

[0075] Multiple coils 111, 112, 113, and 114 can be embedded in the main body 100 to exhibit the characteristics of the coil electronics 1000. For example, when the coil electronics 1000 of this embodiment is used as a power inductor, when current is applied to the multiple coils 111, 112, 113, and 114, the coils can be used to stabilize the power supply of the electronic device by storing energy in the form of a magnetic field and maintaining the output voltage.

[0076] Starting with the first coil 111, which is closest to the first surface S1 of the main body 100, the second coil 112, the third coil 113, and the fourth coil 114 can be arranged sequentially in the length direction (L-axis direction). Therefore, the fourth coil 114 can be set to the second surface S2, which is closest to the main body 100, and the second coil 112 and the third coil 113 can be arranged between the first coil 111 and the fourth coil 114.

[0077] The corresponding winding axes of the first coil 111, the second coil 112, the third coil 113, and the fourth coil 114 can be parallel to the thickness direction (T-axis direction) of the main body 100.

[0078] The first coil 111 can be connected to the first external electrode 121 and the second external electrode 122, which are spaced apart from each other in the width direction (W-axis direction) of the body 100. The second coil 112 can be connected to the third external electrode 123 and the fourth external electrode 124, which are spaced apart from each other in the width direction (W-axis direction) of the body 100.

[0079] The third coil 113 can be connected to the fifth external electrode 125 and the sixth external electrode 126, which are spaced apart from each other in the width direction (W-axis direction) of the body 100. The fourth coil 114 can be connected to the seventh external electrode 127 and the eighth external electrode 128, which are spaced apart from each other in the width direction (W-axis direction) of the body 100.

[0080] The first external electrode 121, the second external electrode 122, the third external electrode 123, the fourth external electrode 124, the fifth external electrode 125, the sixth external electrode 126, the seventh external electrode 127, and the eighth external electrode 128 may extend from the third surface S3 or the fourth surface S4 of the body 100 to cover a portion of the fifth surface S5 and a portion of the sixth surface S6, but this embodiment is not limited thereto. Specifically, the first external electrode 121, the third external electrode 123, the fifth external electrode 125, and the seventh external electrode 127 extend from the third surface S3 of the body 100 to cover a portion of the fifth surface S5 and a portion of the sixth surface S6, and the second external electrode 122, the fourth external electrode 124, the sixth external electrode 126, and the eighth external electrode 128 extend from the fourth surface S4 of the body 100 to cover a portion of the fifth surface S5 and a portion of the sixth surface S6, but this embodiment is not limited thereto. For example, the first external electrode 121, the second external electrode 122, the third external electrode 123, the fourth external electrode 124, the fifth external electrode 125, the sixth external electrode 126, the seventh external electrode 127, and the eighth external electrode 128 may be disposed only on the third surface S3 or the fourth surface S4 of the body 100, or may extend from the third surface S3 or the fourth surface S4 to cover only a portion of the sixth surface S6.

[0081] For example, the first external electrode 121, the second external electrode 122, the third external electrode 123, the fourth external electrode 124, the fifth external electrode 125, the sixth external electrode 126, the seventh external electrode 127, and the eighth external electrode 128 may include conductive materials such as copper (Cu), aluminum (Al), silver (Ag), tin (Sn), gold (Au), nickel (Ni), lead (Pb), chromium (Cr), titanium (Ti), or alloys thereof, but the embodiments are not limited thereto.

[0082] As another example, the first external electrode 121, the second external electrode 122, the third external electrode 123, the fourth external electrode 124, the fifth external electrode 125, the sixth external electrode 126, the seventh external electrode 127, and the eighth external electrode 128 may comprise metals and glass. The metal may be, for example, copper (Cu), nickel (Ni), tin (Sn), palladium (Pd), platinum (Pt), gold (Au), silver (Ag), tungsten (W), titanium (Ti), lead (Pb), or alloys thereof. The glass composition included in the external electrodes may be a mixture of oxides. The glass composition may include, for example, silicon oxides, boron oxides, aluminum oxides, transition metal oxides, alkali metal oxides, alkaline earth metal oxides, or combinations thereof. Here, the transition metal may be selected from zinc (Zn), titanium (Ti), copper (Cu), vanadium (V), manganese (Mn), iron (Fe), and nickel (Ni); the alkali metal may be selected from lithium (Li), sodium (Na), and potassium (K); and the alkaline earth metal may be selected from magnesium (Mg), calcium (Ca), strontium (Sr), and barium (Ba). There are no particular limitations on the method of forming the external electrode. For example, the external electrode can be formed by immersing the body in a conductive paste containing conductive metal and glass, or by printing the conductive paste onto the surface of the body (e.g., by screen printing or gravure printing). In addition, various other methods can be used to form the external electrode, such as coating the surface of the body with conductive paste or transferring a dry film formed by drying the conductive paste onto the body.

[0083] Reference Figure 3 The first coil 111 may be disposed on the first support member 131. The first coil 111 may include an upper coil 111a disposed on the upper surface 131a of the first support member 131 and a lower coil 111b disposed on the lower surface 131b of the first support member 131. The upper coil 111a and the lower coil 111b may be connected to each other through a first through hole V1 passing through the first support member 131.

[0084] The first support member 131 may be made of an insulating material including a thermosetting insulating resin (such as epoxy resin), a thermoplastic insulating resin (such as polyimide), or a photosensitive insulating resin, or may be formed using an insulating material prepared by impregnating a reinforcing material (such as glass fiber or inorganic filler) into the insulating resin. For example, the support member may be made of an insulating material such as a prepreg, Ajinomoto Build-up Film (ABF), FR-4, bismaleimide triazine (BT) film, or photosensitive dielectric (PID) film, but this embodiment is not limited thereto.

[0085] As an inorganic filler, at least one selected from the group consisting of silicon dioxide (SiO2), aluminum oxide (Al2O3), silicon carbide (SiC), barium sulfate (BaSO4), talc, clay, 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) can be used.

[0086] Each of the first coil 111 and the first via V1 may be made 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 this embodiment is not limited thereto.

[0087] An insulating layer IF may be disposed between the first coil 111 and the body 100. The insulating layer IF may be formed along the surface of the first support member 131 and the surface of the first coil 111. The insulating layer IF is absent at the portions of the first support member 131 and the first coil 111 where they connect to the first external electrode 121 and the second external electrode 122. The insulating layer IF serves to insulate the first coil 111 from the body 100 and may include known insulating materials such as parylene. Any insulating material may be used to form the insulating layer IF, and there are no particular limitations. For example, the insulating layer IF may be formed using polyurethane resin, polyester resin, epoxy resin, or polyamide-imide resin. The insulating layer IF may be formed by methods such as vapor deposition, but this embodiment is not limited thereto. For example, the insulating layer IF may be formed by stacking insulating layers on both surfaces of the first support member 131.

[0088] The second coil 112 includes an upper coil 112a and a lower coil 112b connected to each other through a second through-hole V2 passing through the second support member 132; the third coil 113 includes an upper coil 113a and a lower coil 113b connected to each other through a third through-hole V3 passing through the third support member 133; and the fourth coil 114 includes an upper coil 114a and a lower coil 114b connected to each other through a fourth through-hole V4 passing through the fourth support member 134. The second coil 112, the third coil 113, and the fourth coil 114 differ from the first coil 111 only in their positions, therefore redundant descriptions of them will be omitted.

[0089] In addition, a surface insulating layer 900 may be provided on the fifth surface S5 and the sixth surface S6 of the main body 100.

[0090] The surface insulating layer 900 may include a first insulating layer 910 and a second insulating layer 920. The first insulating layer 910 may be disposed on the fifth surface S5 of the body 100, and the second insulating layer 920 may be disposed on the sixth surface S6 of the body 100.

[0091] The surface insulating layer 900 may partially cover the fifth surface S5 and the sixth surface S6 of the main body 100. That is, the first external electrode 121, the second external electrode 122, the third external electrode 123, the fourth external electrode 124, the fifth external electrode 125, the sixth external electrode 126, the seventh external electrode 127, and the eighth external electrode 128 may be disposed on a portion of the fifth surface S5 and a portion of the sixth surface S6 of the main body 100, and the surface insulating layer 900 does not cover the first external electrode 121, the second external electrode 122, the third external electrode 123, the fourth external electrode 124, the fifth external electrode 125, the sixth external electrode 126, the seventh external electrode 127, and the eighth external electrode 128.

[0092] In other embodiments, the surface insulating layer 900 may be disposed on at least one of the first surface S1, the second surface S2, the third surface S3, and the fourth surface S4 of the body 100.

[0093] The surface insulating layer 900 prevents current leakage between the first external electrode 121, the second external electrode 122, the third external electrode 123, the fourth external electrode 124, the fifth external electrode 125, the sixth external electrode 126, the seventh external electrode 127 and the eighth external electrode 128.

[0094] For example, the surface insulating layer 900 may include thermoplastic resins (such as polystyrene resins, vinyl acetate resins, polyester resins, polyethylene resins, polypropylene resins, polyamide resins, rubber resins, acrylic resins, etc.), thermosetting resins (such as phenolic resins, epoxy resins, polyurethane resins, melamine resins, alkyd resins), photosensitive resins, parylene, SiO2, etc. x or SiN x .

[0095] The surface insulating layer 900 can be formed by processes such as screen printing, pad printing, dipping, and inkjet printing. For example, the surface insulating layer 900 can be formed by coating a liquid insulating resin onto the surface of the body 100, or by stacking an insulating film (such as a dry film) on the surface of the body 100, or by a thin film process (such as vapor deposition). When the surface insulating layer 900 is formed using an insulating film, the insulating film can be an Ajinomoto stacked film (ABF) or a polyimide film that does not contain a photosensitive insulating resin.

[0096] When the four coils are arranged in an array structure as in this embodiment, interference may occur between the coils, thereby changing the inductance characteristics of the coil electronics.

[0097] Because the second coil 112 and the third coil 113 are positioned between the first coil 111 and the fourth coil 114, the inductance of the second coil 112 and the third coil 113 can be significantly increased under the influence of the magnetic flux generated by the first coil 111 and the fourth coil 114. In this case, the inductance deviation between the coils can increase. Due to the increased inductance deviation (i.e., with the increase of the deviation in the coupling coefficient), leakage inductance exists, which may affect the resonant frequency and thus potentially lead to circuit design difficulties.

[0098] According to this embodiment, inductance deviation can be reduced by providing spacing portions 200 with a permeability greater than that of the main body 100 between the plurality of coils 111, 112, 113 and 114. That is, like the main body 100, the spacing portions 200 include magnetic material, but may have a permeability greater than that of the main body 100.

[0099] For example, the relative permeability of the main body 100 may be 12, and the relative permeability of the spacer 200 may have a value greater than or equal to 30 and less than or equal to 40. The relative permeability can be calculated from the permeability, which can be measured by the permeameter method, the ferromagnetic resonance method, and the hysteresis loop method. Even if not described in this disclosure, other methods and / or other tools understood by those skilled in the art may be used.

[0100] The spacer 200 may be disposed in at least one of the following regions: a first region R1 located between the first coil 111 and the second coil 112, a second region R2 located between the second coil 112 and the third coil 113, and a third region R3 located between the third coil 113 and the fourth coil 114.

[0101] For example, the spacer 200 may include a first spacer 210, a second spacer 220, and a third spacer 230.

[0102] The first spacer 210 may be provided in the first region R1 located between the first coil 111 and the second coil 112.

[0103] The second spacer 220 may be provided in the second region R2 located between the second coil 112 and the third coil 113.

[0104] The third interval 230 may be provided in the third region R3 located between the third coil 113 and the fourth coil 114.

[0105] The first spacer 210 may have a generally plate-like shape. For example, the first spacer 210 may include a first main surface 211, a second main surface 212, a first side surface 213, a second side surface 214, a third side surface 215, and a fourth side surface 216.

[0106] The first main surface 211 may face the first coil 111, and the second main surface 212 may face the second coil 112. The first main surface 211 and the second main surface 212 may be opposite each other in the length direction (L-axis direction).

[0107] The first side surface 213 and the second side surface 214 may be opposite each other in the width direction (W-axis direction), and the third side surface 215 and the fourth side surface 216 may be opposite each other in the thickness direction (T-axis direction).

[0108] The first side surface 213 can be flush with the third surface S3 of the main body 100, and the second side surface 214 can be flush with the fourth surface S4 of the main body 100.

[0109] The third side surface 215 may be spaced apart from the fifth surface S5 of the body 100, and the fourth side surface 216 may be spaced apart from the sixth surface S6 of the body 100.

[0110] The second spacer 220 may have a generally plate-like shape. For example, the second spacer 220 may include a first main surface 221, a second main surface 222, a first side surface 223, a second side surface 224, a third side surface 225, and a fourth side surface 226.

[0111] The third spacer 230 may have a generally plate-like shape. For example, the third spacer 230 may include a first main surface 231, a second main surface 232, a first side surface 233, a second side surface 234, a third side surface 235, and a fourth side surface 236.

[0112] The first spacer 210 and the third spacer 230 may have the same shape, while the second spacer 220 may have a different shape than the first spacer 210 and the third spacer 230. Although not shown, alternatively, the third spacer may have a different shape than the first spacer or the second spacer. As used herein, the terms "different shape" or "shape different from another shape" may refer to a spacer whose outline is different from the outline of another spacer.

[0113] Reference Figure 3 and Figure 4 The first edge region R11 can be disposed between the fifth surface S5 of the main body 100 and the first coil 111, and the second edge region R12 can be disposed between the fifth surface S5 and the second coil 112.

[0114] The first spacer portion 210 can be spaced apart from the fifth surface S5 of the main body 100. That is, there is a gap t1a between the first spacer portion 210 and the fifth surface S5 of the main body 100.

[0115] The gap t1a between the fifth surface S5 of the main body 100 and the first gap portion 210 may be less than the average thickness (i.e., the average dimension in the T-axis direction) TU1 of the first edge region R11 and the second edge region R12. For example, the gap t1a may be less than or equal to 1 / 3 of the average thickness TU1.

[0116] Here, the average thickness of the first edge region R11 and the second edge region R12 can be measured based on a scanning electron microscope (SEM) image of the body at 10,000x magnification of a cross-section taken along the length direction (L-axis) - thickness direction (T-axis). The average thickness of the first edge region R11 and the second edge region R12 can be obtained by measuring the thickness of the first edge region at three equidistant points along the length direction (L-axis) on the first coil and the thickness of the second edge region at three equidistant points along the length direction (L-axis) on the second coil in the scanned image, and then taking the average of the measured thicknesses. Other methods and / or other tools understood by those skilled in the art may be used even if not described in this disclosure. The fifth edge region R15 may be disposed between the sixth surface S6 of the body 100 and the first coil 111, and the sixth edge region R16 may be disposed between the sixth surface S6 and the second coil 112.

[0117] The first spacer portion 210 can be spaced apart from the sixth surface S6 of the main body 100. That is, there is a gap t1b between the first spacer portion 210 and the sixth surface S6 of the main body 100.

[0118] The gap t1b between the sixth surface S6 of the main body 100 and the first spacer 210 may be less than the average thickness TL1 of the fifth edge region R15 and the sixth edge region R16. For example, the gap t1b may be less than or equal to 1 / 3 of the average thickness TL1.

[0119] Here, the average thickness of the fifth edge region R15 and the sixth edge region R16 can be measured based on a scanning electron microscope (SEM) image of the body at 10,000x magnification of a cross-section taken along the length direction (L-axis) - thickness direction (T-axis). The average thickness of the fifth edge region R15 and the sixth edge region R16 can be obtained by measuring the thickness of the fifth edge region at three equidistant points along the length direction (L-axis) on the first coil and the thickness of the sixth edge region at three equidistant points along the length direction (L-axis) on the second coil in the scanned image, and then taking the average of the measured thicknesses. Other methods and / or other tools understood by those skilled in the art may be used, even if not described in this disclosure.

[0120] The first region R1 may have a first dimension d1. The first dimension d1 may be the distance between the first coil 111 and the second coil 112. The first dimension d1 may be, for example, 120 μm.

[0121] The first spacer 210 may have a first thickness g1. The first thickness g1 may be greater than 24% of the first dimension d1 and less than 42% of the first dimension d1. For example, when the first dimension d1 is 120 μm, the first thickness g1 may be greater than 28.8 μm and less than 50.4 μm, or for example, the first thickness g1 may be greater than 30 μm and less than 50 μm.

[0122] If the first thickness g1 is less than or equal to 24% of the first dimension d1, or if the first thickness g1 is greater than or equal to 42% of the first dimension d1, the inductance deviation between the coils may become too large.

[0123] Here, both the first dimension d1 and the first thickness g1 can refer to average values. The first dimension d1 and the first thickness g1 can be measured based on a scanning electron microscope (SEM) image of the body at 10,000x magnification of a cross-section taken along the length direction (L-axis direction) and thickness direction (T-axis direction). The first dimension d1 and the first thickness g1 can be obtained by measuring the first dimension at ten (10) equidistant points in the thickness direction (T-axis direction) on the first coil (or second coil) in the scanned image, and then taking the average of the measured dimensions; and by measuring the first thickness at ten (10) equidistant points in the thickness direction (T-axis direction) on the first interval in the scanned image, and then taking the average of the measured thicknesses. Other methods and / or other tools as understood by those skilled in the art may be used even if not described in this disclosure.

[0124] Reference Figure 3 and Figure 5The second edge region R12 can be disposed between the fifth surface S5 of the main body 100 and the second coil 112, and the third edge region R13 can be disposed between the fifth surface S5 and the third coil 113.

[0125] The second spacer 220 can be flush with the fifth surface S5 of the main body 100. That is, there is no gap between the second spacer 220 and the fifth surface S5 of the main body 100.

[0126] The sixth edge region R16 can be disposed between the sixth surface S6 of the main body 100 and the second coil 112, and the seventh edge region R17 can be disposed between the sixth surface S6 and the third coil 113.

[0127] The second spacer 220 can be flush with the sixth surface S6 of the main body 100. That is, there is no gap between the second spacer 220 and the sixth surface S6 of the main body 100.

[0128] The second region R2 may have a second dimension d2. The second dimension d2 may be the distance between the second coil 112 and the third coil 113. The second dimension d2 may be, for example, 120 μm.

[0129] The second spacer 220 may have a second thickness g2. The second thickness g2 may be greater than 24% and less than 42% of the second dimension d2. For example, when the second dimension d2 is 120 μm, the second thickness g2 may be greater than 28.8 μm and less than 50.4 μm, or for example, the second thickness g2 may be greater than 30 μm and less than 50 μm.

[0130] If the second thickness g2 is less than or equal to 24% of the second dimension d2, or if the second thickness g2 is greater than or equal to 42% of the second dimension d2, the inductance deviation between the coils may become too large.

[0131] Here, both the second dimension d2 and the second thickness g2 can refer to average values. The second dimension d2 and the second thickness g2 can be measured based on a scanning electron microscope (SEM) image of the body at 10,000x magnification of a cross section taken along the length direction (L-axis direction) and thickness direction (T-axis direction). The second dimension d2 and the second thickness g2 can be obtained by measuring the second dimension at ten (10) equidistant points in the thickness direction (T-axis direction) on the second coil (or third coil) in the scanned image, and then taking the average value of the measured dimensions, and measuring the second thickness at ten (10) equidistant points in the thickness direction (T-axis direction) on the second interval in the scanned image, and then taking the average value of the measured thicknesses.

[0132] Reference Figure 3 and Figure 6The third edge region R13 can be disposed between the fifth surface S5 of the main body 100 and the third coil 113, and the fourth edge region R14 can be disposed between the fifth surface S5 and the fourth coil 114.

[0133] The third spacer 230 can be spaced apart from the fifth surface S5 of the main body 100. That is, there is a space t3a between the third spacer 230 and the fifth surface S5 of the main body 100.

[0134] The gap t3a between the fifth surface S5 of the main body 100 and the third spacer 230 can be less than the average thickness TU3 of the third edge region R13 and the fourth edge region R14. For example, the gap t3a can be less than or equal to 1 / 3 of the average thickness TU3.

[0135] Here, the average thickness of the third edge region R13 and the fourth edge region R14 can be measured based on a scanning electron microscope (SEM) image of the body at 10,000x magnification of a cross-section taken along the length direction (L-axis) - thickness direction (T-axis). The average thickness of the third edge region R13 and the fourth edge region R14 can be obtained by measuring the thickness of the third edge region at three equidistant points along the length direction (L-axis) on the third coil and the thickness of the fourth edge region at three equidistant points along the length direction (L-axis) on the fourth coil in the scanned image, and then taking the average of the measured thicknesses.

[0136] The seventh edge region R17 can be disposed between the sixth surface S6 of the main body 100 and the third coil 113, and the eighth edge region R18 can be disposed between the sixth surface S6 and the fourth coil 114.

[0137] The third spacer 230 can be spaced apart from the sixth surface S6 of the main body 100. That is, there is a space t3b between the third spacer 230 and the sixth surface S6 of the main body 100.

[0138] The gap t3b between the sixth surface S6 of the main body 100 and the third spacer 230 can be less than the average thickness TL3 of the seventh edge region R17 and the eighth edge region R18. For example, the gap t3b can be less than or equal to 1 / 3 of the average thickness TL3.

[0139] Here, the average thickness of the seventh edge region R17 and the eighth edge region R18 can be measured based on a scanning electron microscope (SEM) image of the body at 10,000x magnification of a cross-section taken along the length direction (L-axis) - thickness direction (T-axis). The average thickness of the seventh edge region R17 and the eighth edge region R18 can be measured by measuring the thickness of the seventh edge region at three equidistant points along the length direction (L-axis) on the third coil and the thickness of the eighth edge region at three equidistant points along the length direction (L-axis) on the fourth coil in the scanned image, and then taking the average of the measured thicknesses. Other methods and / or other tools understood by those skilled in the art may be used, even if not described in this disclosure.

[0140] The third region R3 may have a third dimension d3. The third dimension d3 may be the distance between the third coil 113 and the fourth coil 114. The third dimension d3 may be, for example, 120 μm.

[0141] The third spacer 230 may have a third thickness g3. The third thickness g3 may be greater than 24% of the third dimension d3 and less than 42% of the third dimension d3. For example, when the third dimension d3 is 120 μm, the third thickness g3 may be greater than 28.8 μm and less than 50.4 μm. For example, the third thickness g3 may be greater than 30 μm and less than 50 μm.

[0142] If the third thickness g3 is less than or equal to 24% of the third dimension d3, or if the third thickness g3 is greater than or equal to 42% of the third dimension d3, the inductance deviation between the coils may become too large.

[0143] Here, both the third dimension d3 and the third thickness g3 can refer to average values. The third dimension d3 and the third thickness g3 can be measured based on a scanning electron microscope (SEM) image of the body at 10,000x magnification of a cross section taken along the length direction (L-axis direction) and thickness direction (T-axis direction). The third dimension d3 and the third thickness g3 can be obtained by measuring the third dimension at ten (10) equidistant points along the thickness direction (T-axis direction) on the third coil (or fourth coil) in the scanned image, and then taking the average value of the measured dimensions; and by measuring the third thickness at ten (10) equidistant points along the thickness direction (T-axis direction) on the third interval in the scanned image, and then taking the average value of the measured thicknesses.

[0144] Figure 7 This is a schematic cross-sectional view showing a coil electronics assembly according to another embodiment. Figure 8 It shows Figure 7 A magnified view of region A2. Figure 9 It shows Figure 7 A magnified view of region B2, and Figure 10 It shows Figure 7 A magnified view of region C2.

[0145] Reference Figure 7 and Figure 8 The first edge region R21 can be disposed between the fifth surface S5 of the main body 100 and the first coil 111, and the second edge region R22 can be disposed between the fifth surface S5 and the second coil 112.

[0146] The first spacer 210' can be flush with the fifth surface S5 of the main body 100.

[0147] The fifth edge region R25 can be disposed between the sixth surface S6 of the main body 100 and the first coil 111, and the sixth edge region R26 can be disposed between the sixth surface S6 and the second coil 112.

[0148] The first spacer 210' may be flush with the sixth surface S6 of the main body 100. The first spacer 210' may include a third side surface 215' and a fourth side surface 216', the third side surface 215' being coplanar with the fifth surface S5 of the main body 100, and the fourth side surface 216' being coplanar with the sixth surface S6 of the main body 100.

[0149] The first region R1 may have a first dimension d1'. The first dimension d1' may be the distance between the first coil 111 and the second coil 112. The first dimension d1' may be, for example, 120 μm.

[0150] The first spacer 210' may have a first thickness g1'. The first thickness g1' may be greater than 24% and less than 42% of the first dimension d1'. For example, when the first dimension d1' is 120 μm, the first thickness g1' may be greater than 28.8 μm and less than 50.4 μm, or for example, the first thickness g1' may be greater than 30 μm and less than 50 μm.

[0151] If the first thickness g1' is less than or equal to 24% of the first dimension d1', or if the first thickness g1' is greater than or equal to 42% of the first dimension d1', the inductance deviation between the coils may become too large.

[0152] Here, both the first dimension d1' and the first thickness g1' can refer to average values. The first dimension d1' and the first thickness g1' can be measured based on a scanning electron microscope (SEM) image of the body at 10,000x magnification of a cross section taken along the length direction (L-axis direction) - thickness direction (T-axis direction). The first dimension d1' and the first width g1' can be obtained by measuring the first dimension at ten (10) equidistant points along the thickness direction (T-axis direction) on the first coil (or second coil) in the scanned image, and then taking the average value of the measured dimensions, and by measuring the first thickness at ten (10) equidistant points along the thickness direction (T-axis direction) on the first interval in the scanned image, and then taking the average value of the measured thicknesses.

[0153] Reference Figure 7 and Figure 9 The second edge region R22 can be disposed between the fifth surface S5 of the main body 100 and the second coil 112, and the third edge region R23 can be disposed between the fifth surface S5 and the third coil 113.

[0154] The second spacer 220' can be spaced apart from the fifth surface S5 of the main body 100.

[0155] The gap t2a' between the fifth surface S5 of the main body 100 and the second spacer 220' can be less than the average thickness TU5 of the second edge region R22 and the third edge region R23. For example, the gap t2a' can be less than or equal to 1 / 3 of the average thickness TU5.

[0156] Here, the average thickness of the second edge region R22 and the third edge region R23 can be measured based on a scanning electron microscope (SEM) image of the body at 10,000x magnification of a cross-section taken along the length direction (L-axis) - thickness direction (T-axis). The average thickness of the second edge region R22 and the third edge region R23 can be obtained by measuring the thickness of the second edge region at three equidistant points along the length direction (L-axis) on the second coil and the thickness of the third edge region at three equidistant points along the length direction (L-axis) on the third coil in the scanned image, and then taking the average of the measured thicknesses. Other methods and / or other tools understood by those skilled in the art may be used, even if not described in this disclosure.

[0157] The sixth edge region R26 can be disposed between the sixth surface S6 of the main body 100 and the second coil 112, and the seventh edge region R27 can be disposed between the sixth surface S6 and the third coil 113.

[0158] The second spacer 220' may be spaced apart from the sixth surface S6 of the body 100. The second spacer 220' may include a third side surface 225' and a fourth side surface 226', the third side surface 225' being spaced apart from the fifth surface S5 of the body 100, and the fourth side surface 226' being spaced apart from the sixth surface S6 of the body 100.

[0159] The gap t2b' between the sixth surface S6 of the main body 100 and the second spacer 220' can be less than the average thickness TL5 of the sixth edge region R26 and the seventh edge region R27. For example, the gap t2b' can be less than or equal to 1 / 3 of the average thickness TL5.

[0160] The spacing between the fifth surface S5 or the sixth surface S6 and each of the first spacer 210', the second spacer 220', and the third spacer 230' can be measured by SEM. Other methods and / or other tools as understood by those skilled in the art may be used, even if not described in this disclosure.

[0161] Here, the average thickness of the sixth edge region R26 and the seventh edge region R27 can be measured based on a scanning electron microscope (SEM) image of the body at 10,000x magnification of a cross-section taken along the length direction (L-axis) - thickness direction (T-axis). The average thickness of the sixth edge region R26 and the seventh edge region R27 can be obtained by measuring the thickness of the sixth edge region at three equidistant points along the length direction (L-axis) on the second coil and the thickness of the seventh edge region at three equidistant points along the length direction (L-axis) on the third coil in the scanned image, and then taking the average of the measured thicknesses. Other methods and / or other tools understood by those skilled in the art may be used, even if not described in this disclosure.

[0162] The second region R2 may have a second dimension d2'. The second dimension d2' may be the distance between the second coil 112 and the third coil 113. The second dimension d2' may be, for example, 120 μm.

[0163] The second spacer 220' may have a second thickness g2'. The second thickness g2' may be greater than 24% and less than 42% of the second dimension d2'. For example, when the second dimension d2' is 120 μm, the second thickness g2' may be greater than 28.8 μm and less than 50.4 μm, or for example, the second thickness g2' may be greater than 30 μm and less than 50 μm.

[0164] If the second thickness g2' is less than or equal to 24% of the second dimension d2', or if the second thickness g2' is greater than or equal to 42% of the second dimension d2', the inductance deviation between the coils may become too large.

[0165] Here, both the second dimension d2' and the second thickness g2' can refer to average values. The second dimension d2' and the second thickness g2' can be measured based on a scanning electron microscope (SEM) image of the body at 10,000x magnification of a cross section taken along the length direction (L-axis direction) and thickness direction (T-axis direction). The second dimension d2' and the second thickness g2' can be obtained by measuring the second dimension at ten (10) equidistant points along the thickness direction (T-axis direction) on the second coil (or third coil) in the scanned image, and then taking the average of the measured dimensions, and measuring the second thickness at ten (10) equidistant points along the thickness direction (T-axis direction) on the second interval in the scanned image, and then taking the average of the measured thicknesses.

[0166] Reference Figure 7 and Figure 10 The third edge region R23 can be disposed between the fifth surface S5 of the main body 100 and the third coil 113, and the fourth edge region R24 can be disposed between the fifth surface S5 and the fourth coil 114.

[0167] The third spacer 230' can be flush with the fifth surface S5 of the main body 100.

[0168] The seventh edge region R27 can be disposed between the sixth surface S6 of the main body 100 and the third coil 113, and the eighth edge region R28 can be disposed between the sixth surface S6 and the fourth coil 114.

[0169] The third spacer 230' may be flush with the sixth surface S6 of the main body 100. The third spacer 230' may include a third side surface 235' and a fourth side surface 236', the third side surface 235' being coplanar with the fifth surface S5 of the main body 100, and the fourth side surface 236' being coplanar with the sixth surface S6 of the main body 100.

[0170] The third region R3 may have a third dimension d3'. The third dimension d3' may be the distance between the third coil 113 and the fourth coil 114. The third dimension d3' may be, for example, 120 μm.

[0171] The third spacer 230' may have a third thickness g3'. The third thickness g3' may be greater than 24% and less than 42% of the third dimension d3'. For example, when the third dimension d3' is 120 μm, the third thickness g3' may be greater than 28.8 μm and less than 50.4 μm, or for example, the third thickness g3' may be greater than 30 μm and less than 50 μm.

[0172] If the third thickness g3' is less than or equal to 24% of the third dimension d3', or if the third thickness g3' is greater than or equal to 42% of the third dimension d3', the inductance deviation between the coils may become too large.

[0173] Here, both the third dimension d3' and the third thickness g3' can refer to average values. The third dimension d3' and the third thickness g3' can be measured based on a scanning electron microscope (SEM) image of the body at 10,000x magnification of a cross section taken along the length direction (L-axis direction) and thickness direction (T-axis direction). The third dimension d3' and the third thickness g3' can be obtained by measuring the third dimension at ten (10) equidistant points along the thickness direction (T-axis direction) on the third coil (or fourth coil) in the scanned image, and then taking the average value of the measured dimensions, and measuring the third thickness at ten (10) equidistant points along the thickness direction (T-axis direction) on the third interval in the scanned image, and then taking the average value of the measured thicknesses.

[0174] Although the coil electronics assembly shown above includes four coils and three spacers, the coil electronics assembly according to this disclosure may include three or more coils and a plurality of spacers, wherein one of the spacers may have a shape different from the shape of the remaining spacers. As an example, the coil electronics assembly includes three coils, a first spacer disposed between a first coil and a second coil, and a second spacer disposed between a second coil and a third coil, wherein the first spacer has a shape different from the shape of the second spacer, the first spacer may be spaced apart from the second spacer in the length direction, and in the thickness direction, the first spacer may be spaced apart from the outer surface of the body, and the second spacer may be flush with the outer surface of the body. The remaining description of the first and second spacers is the same as that of the spacers in the above embodiments, and therefore will not be repeated. Figure 11 This is a schematic perspective view showing a coil electronics assembly according to another embodiment. Figure 12 It shows Figure 11 A top plan view of the coil electronics assembly, and Figure 13 It is shown Figure 11 An exploded perspective view of the main body of the coil electronic component. Figure 14 It shows along Figure 12 A schematic cross-sectional view taken from line II-II'.

[0175] Reference Figure 11 , Figure 12 and Figure 14The coil electronics assembly 4000 may include a main body 3100, a first external electrode 3121, a second external electrode 3122, a third external electrode 3123, a fourth external electrode 3124, a fifth external electrode 3125, a sixth external electrode 3126, a seventh external electrode 3127 and an eighth external electrode 3128 disposed on the outer surface of the main body 3100, a plurality of coils 3111, 3112, 3113 and 3114 embedded in the main body 3100, and a spacer portion 6200.

[0176] The first coil 3111, the second coil 3112, the third coil 3113, and the fourth coil 3114 can be embedded in the main body 3100. The winding axis of the first coil 3111, the second coil 3112, the third coil 3113, and the fourth coil 3114 can be parallel to the thickness direction (T-axis direction) of the main body 3100.

[0177] The spacer 6200 may include a first spacer 6210, a second spacer 6220 and a third spacer 6230.

[0178] The first interval 6210 may be disposed between the first coil 3111 and the second coil 3112, the second interval 6220 may be disposed between the second coil 3112 and the third coil 3113, and the third interval 6230 may be disposed between the third coil 3113 and the fourth coil 3114.

[0179] Reference Figure 14 The first spacer portion 6210 and the third spacer portion 6230 may have the same shape, and the second spacer portion 6220 may have a different shape than the first spacer portion 6210 and the third spacer portion 6230. For example, the first spacer portion 6210 may be spaced apart from each of the fifth surface S5 and the sixth surface S6 of the body 3100, and the third spacer portion 6230 may be spaced apart from each of the fifth surface S5 and the sixth surface S6 of the body 3100. The second spacer portion 6220 may be flush with each of the fifth surface S5 and the sixth surface S6 of the body 3100.

[0180] Reference Figure 13The main body 3100 can be a laminate made by stacking multiple magnetic sheets 3141, 3142, 3143, 3144, 3145, 3146, 3147, 3148 and 3149 and multiple magnetic sheets 3150 and 3151 in the thickness direction (T-axis direction). The magnetic sheets 3111a to 3111i include a portion of the first coil 3111, a portion of the second coil 3112a to 3112i include a portion of the second coil 3112, a portion of the third coil 3113a to 3113i include a portion of the third coil 3113, and a portion of the fourth coil 3114a to 3114i include a portion of the fourth coil 3114. No conductor patterns are provided on the multiple magnetic sheets 3150 and 3151.

[0181] Multiple generally J-shaped conductor patterns 3111a, 3112a, 3113a and 3114a may be formed on the magnetic sheet 3141. One end of each of the conductor patterns 3111a, 3112a, 3113a and 3114a may extend from the edge of the magnetic sheet 3141 to be exposed from the fourth surface S4 of the body 3100.

[0182] Multiple conductor patterns 3111b, 3112b, 3113b, and 3114b electrically connected to corresponding conductor patterns 3111a, 3112a, 3113a, and 3114a can be formed on the magnetic sheet 3142. The conductor patterns 3111b, 3112b, 3113b, and 3114b can correspond to approximately 3 / 4 turns of the first coil 3111, the second coil 3112, the third coil 3113, and the fourth coil 3114, respectively, and can each be generally U-shaped.

[0183] Multiple conductor patterns 3111c, 3112c, 3113c, and 3114c electrically connected to corresponding conductor patterns 3111b, 3112b, 3113b, and 3114b can be formed on the magnetic sheet 3143. The conductor patterns 3111c, 3112c, 3113c, and 3114c can correspond to approximately 3 / 4 turns of the first coil 3111, the second coil 3112, the third coil 3113, and the fourth coil 3114, respectively, and can each be generally C-shaped.

[0184] Multiple conductor patterns 3111d, 3112d, 3113d, and 3114d electrically connected to corresponding conductor patterns 3111c, 3112c, 3113c, and 3114c can be formed on the magnetic sheet 3144. Conductor patterns 3111d, 3112d, 3113d, and 3114d can correspond to approximately 3 / 4 turns of the first coil 3111, the second coil 3112, the third coil 3113, and the fourth coil 3114, respectively, and can each be generally U-shaped.

[0185] Multiple conductor patterns 3111e, 3112e, 3113e, and 3114e electrically connected to corresponding conductor patterns 3111d, 3112d, 3113d, and 3114d can be formed on the magnetic sheet 3145. The conductor patterns 3111e, 3112e, 3113e, and 3114e can correspond to approximately 3 / 4 turns of the first coil 3111, the second coil 3112, the third coil 3113, and the fourth coil 3114, respectively, and can each be generally C-shaped.

[0186] Multiple conductor patterns 3111f, 3112f, 3113f, and 3114f electrically connected to corresponding conductor patterns 3111e, 3112e, 3113e, and 3114e can be formed on the magnetic sheet 3146. Conductor patterns 3111f, 3112f, 3113f, and 3114f may have the same structure as the aforementioned conductor patterns 3111b, 3112b, 3113b, and 3114b.

[0187] Multiple conductor patterns 3111g, 3112g, 3113g, and 3114g electrically connected to corresponding conductor patterns 3111f, 3112f, 3113f, and 3114f can be formed on the magnetic sheet 3147. Conductor patterns 3111g, 3112g, 3113g, and 3114g may have the same structure as the aforementioned conductor patterns 3111c, 3112c, 3113c, and 3114c.

[0188] Multiple conductor patterns 3111h, 3112h, 3113h, and 3114h electrically connected to corresponding conductor patterns 3111g, 3112g, 3113g, and 3114g can be formed on the magnetic sheet 3148. Conductor patterns 3111h, 3112h, 3113h, and 3114h may have the same structure as the aforementioned conductor patterns 3111d, 3112d, 3113d, and 3114d.

[0189] Multiple generally J-shaped conductor patterns 3111i, 3112i, 3113i, and 3114i electrically connected to corresponding conductor patterns 3111h, 3112h, 3113h, and 3114h can be formed on the magnetic sheet 3149. One end of each of the conductor patterns 3111i, 3112i, 3113i, and 3114i can be extended from the edge of the magnetic sheet 3149 to be exposed from the third surface S3 of the body 3100. Furthermore, electrical connections between conductor patterns on different magnetic sheets can be made via through holes (not shown) formed in the magnetic sheets.

[0190] By stacking multiple magnetic sheets 3141, 3142, 3143, 3144, 3145, 3146, 3147, 3148, and 3149 on which conductor patterns 3111a to 3111i, 3112a to 3112i, 3113a to 3113i, and 3114a to 3114i are disposed, a body 3100 encapsulating a first coil 3111, a second coil 3112, a third coil 3113, and a fourth coil 3114 can be formed. The spacer 6200 can be formed by cutting a groove between any two adjacent coils of the first coil 3111, the second coil 3112, the third coil 3113, and the fourth coil 3114, filling the groove with glass, and then placing a magnetic material thereon. However, this embodiment is not limited to this, and the spacer can be formed in various other ways.

[0191] A magnetic sheet 3150 without a conductor pattern can be stacked on top of a magnetic sheet 3141. The magnetic sheet 3150 protects the conductor patterns 3111a, 3112a, 3113a, and 3114a on the magnetic sheet 3141. Furthermore, another magnetic sheet 3151 without a conductor pattern can be disposed below the magnetic sheet 3149.

[0192] The quantity of magnetic sheets described above is merely an example, and this embodiment is not limited thereto.

[0193] In addition to the components mentioned above, the remaining components and Figure 1 The components of the coil electronic assembly shown are identical, so a repeated description of it will be omitted.

[0194] Figure 15 This is a schematic cross-sectional view showing a coil electronics assembly according to another embodiment.

[0195] Reference Figure 15The spacer portion 6200' may include a first spacer portion 6210', a second spacer portion 6220', and a third spacer portion 6230'. The first spacer portion 6210' may be flush with each of the fifth surface S5 and the sixth surface S6 of the body 3100, and the third spacer portion 6230' may be flush with each of the fifth surface S5 and the sixth surface S6 of the body 3100. The second spacer portion 6220' may be spaced apart from the fifth surface S5 and the sixth surface S6 of the body 3100.

[0196] In addition to the components mentioned above, the remaining components and Figure 11 The components of the coil electronic assembly shown are identical, so a repeated description of it will be omitted.

[0197] Figure 16 This is a schematic perspective view showing a coil electronics assembly according to another embodiment. Figure 17 Show along Figure 16 A schematic cross-sectional view taken from line III-III'.

[0198] Reference Figure 16 and Figure 17 The coil electronics assembly 5000 may include a main body 4100, a first external electrode 4121, a second external electrode 4122, a third external electrode 4123, a fourth external electrode 4124, a fifth external electrode 4125, a sixth external electrode 4126, a seventh external electrode 4127 and an eighth external electrode 4128 disposed on the outer surface of the main body 4100, a plurality of coils 4111, 4112, 4113 and 4114 embedded in the main body 4100, and a spacer portion 7200.

[0199] The first coil 4111, the second coil 4112, the third coil 4113, and the fourth coil 4114 can be embedded in the main body 4100. The main body 4100 may include a first core 4410 passing through the first coil 4111, a second core 4420 passing through the second coil 4112, a third core 4430 passing through the third coil 4113, and a fourth core 4440 passing through the fourth coil 4114.

[0200] The first coil 4111 may include at least one turn of wire. An insulating layer IF may be disposed on the surface of the first coil 4111.

[0201] The second coil 4112, the third coil 4113, and the fourth coil 4114 differ from the first coil 4111 only in their positions, so redundant descriptions of them will be omitted.

[0202] The spacer 7200 may include a first spacer 7210, a second spacer 7220 and a third spacer 7230.

[0203] The first spacing portion 7210 may be disposed between the first coil 4111 and the second coil 4112, the second spacing portion 7220 may be disposed between the second coil 4112 and the third coil 4113, and the third spacing portion 7230 may be disposed between the third coil 4113 and the fourth coil 4114.

[0204] The first spacer portion 7210 and the third spacer portion 7230 may have the same shape, while the second spacer portion 7220 may have a different shape than the first spacer portion 7210 and the third spacer portion 7230. For example, the first spacer portion 7210 may be spaced apart from each of the fifth surface S5 and the sixth surface S6 of the body 4100, and the third spacer portion 7230 may be spaced apart from each of the fifth surface S5 and the sixth surface S6 of the body 4100. The second spacer portion 7220 may be flush with each of the fifth surface S5 and the sixth surface S6 of the body 4100.

[0205] Additionally, surface insulating layers 4900 may be provided on the fifth surface S5 and the sixth surface S6 of the main body 4100. The surface insulating layer 4900 may include a first insulating layer 4910 and a second insulating layer 4920. The first insulating layer 4910 may be provided on the fifth surface S5 of the main body 4100, and the second insulating layer 4920 may be provided on the sixth surface S6 of the main body 4100.

[0206] In addition to the components mentioned above, the remaining components and Figure 1 The components of the coil electronic assembly shown are identical, so a repeated description of it will be omitted.

[0207] Figure 18 This is a schematic cross-sectional view showing a coil electronics assembly according to another embodiment.

[0208] Reference Figure 18 The spacer portion 7200' may include a first spacer portion 7210', a second spacer portion 7220', and a third spacer portion 7230'. The first spacer portion 7210' may be flush with each of the fifth surface S5 and the sixth surface S6 of the body 4100, and the third spacer portion 7230' may be flush with each of the fifth surface S5 and the sixth surface S6 of the body 4100. The second spacer portion 7220' may be spaced apart from the fifth surface S5 and the sixth surface S6 of the body 4100.

[0209] In addition to the components mentioned above, the remaining components and Figure 16 The components of the coil electronic assembly shown are identical, so a repeated description of it will be omitted.

[0210] [Preparation Example: Fabrication of Coil Electronic Components] Example 1 A coil electronic assembly is manufactured, wherein the coil electronic assembly has four coils spaced apart and embedded in a body, and spacers disposed between the coils. The relative permeability of the body is 12, and the relative permeability of the spacers is 36.

[0211] The thickness of the main body is 1000μm.

[0212] The thickness of the support member is 20 μm, and the thickness of the first coil, second coil, third coil and fourth coil, measured from the surface of the support member, is 170 μm.

[0213] The thickness of the first, second, third, and fourth edge regions is 320 μm, and the thickness of the fifth, sixth, seventh, and eighth edge regions is also 320 μm.

[0214] The first dimension of the first region is 120 μm, the second dimension of the second region is 120 μm, and the third dimension of the third region is 120 μm.

[0215] The distance between the fifth surface of the main body and the first spacer is 107 μm, the fifth surface of the main body is flush with the second spacer, and the distance between the fifth surface of the main body and the third spacer is 107 μm.

[0216] The first thickness of the first spacer is 35 μm, the second thickness of the second spacer is 35 μm, and the third thickness of the third spacer is 35 μm.

[0217] Example 2 The first thickness of the first spacer is 40 μm, the second thickness of the second spacer is 40 μm, and the third thickness of the third spacer is 40 μm. Except for the above, Example 2 is the same as Example 1.

[0218] Example 3 The first thickness of the first spacer is 45 μm, the second thickness of the second spacer is 45 μm, and the third thickness of the third spacer is 45 μm. Except for the above, Example 3 is the same as Example 1.

[0219] Comparison Example 1 The first thickness of the first spacer portion is 10 μm, the second thickness of the second spacer portion is 10 μm, and the third thickness of the third spacer portion is 10 μm. Except for the above, Comparative Example 1 is the same as Example 1.

[0220] Comparison Example 2 The first thickness of the first spacer is 20 μm, the second thickness of the second spacer is 20 μm, and the third thickness of the third spacer is 20 μm. Except for the above, Comparative Example 2 is the same as Example 1.

[0221] Comparison Example 3 The first thickness of the first spacer portion is 30 μm, the second thickness of the second spacer portion is 30 μm, and the third thickness of the third spacer portion is 30 μm. Except for the above, Comparative Example 3 is the same as Example 1.

[0222] Comparison Example 4 The first thickness of the first spacer is 50 μm, the second thickness of the second spacer is 50 μm, and the third thickness of the third spacer is 50 μm. Except for the above, Comparative Example 4 is the same as Example 1.

[0223] Comparison Example 5 The first thickness of the first spacer portion is 60 μm, the second thickness of the second spacer portion is 60 μm, and the third thickness of the third spacer portion is 60 μm. Except for the above, Comparative Example 5 is the same as Example 1.

[0224] Comparison Example 6 The fifth surface of the main body is flush with the first spacer, the fifth surface of the main body is flush with the second spacer, and the fifth surface of the main body is flush with the third spacer. Except for the above, Comparative Example 6 is the same as Example 2.

[0225] Compare Example 7 The distance between the fifth surface of the main body and the first spacer is 213 μm, the distance between the fifth surface of the main body and the second spacer is 213 μm, and the distance between the fifth surface of the main body and the third spacer is 213 μm. Except for the above, Comparative Example 7 is the same as Example 2.

[0226] Comparison Example 8 The distance between the fifth surface of the main body and the first spacer is 320 μm, the distance between the fifth surface of the main body and the second spacer is 320 μm, and the distance between the fifth surface of the main body and the third spacer is 320 μm. Except for the above, Comparative Example 8 is the same as Example 2.

[0227] Example 4 The fifth surface of the main body is flush with the first spacer portion, the distance between the fifth surface of the main body and the second spacer portion is 107 μm, and the fifth surface of the main body is flush with the third spacer portion. Except for the above, Example 4 is the same as Example 1.

[0228] Example 5 The first thickness of the first spacer is 40 μm, the second thickness of the second spacer is 40 μm, and the third thickness of the third spacer is 40 μm. Except for the above, Example 5 is the same as Example 4.

[0229] Example 6 The first thickness of the first spacer is 45 μm, the second thickness of the second spacer is 45 μm, and the third thickness of the third spacer is 45 μm. Except for the above, Example 6 is the same as Example 4.

[0230] Comparison Example 9 The first thickness of the first spacer is 10 μm, the second thickness of the second spacer is 10 μm, and the third thickness of the third spacer is 10 μm. Except for the above, Comparative Example 9 is the same as Example 4.

[0231] Compare Example 10 The first thickness of the first spacer is 20 μm, the second thickness of the second spacer is 20 μm, and the third thickness of the third spacer is 20 μm. Except for the above, Comparative Example 10 is the same as Example 4.

[0232] Compare Example 11 The first thickness of the first spacer is 30 μm, the second thickness of the second spacer is 30 μm, and the third thickness of the third spacer is 30 μm. Except for the above, Comparative Example 11 is the same as Example 4.

[0233] Compare Example 12 The first thickness of the first spacer is 50 μm, the second thickness of the second spacer is 50 μm, and the third thickness of the third spacer is 50 μm. Except for the above, Comparative Example 12 is the same as Example 4.

[0234] Compare Example 13 The first thickness of the first spacer portion is 60 μm, the second thickness of the second spacer portion is 60 μm, and the third thickness of the third spacer portion is 60 μm. Except for the above, Comparative Example 13 is the same as Example 4.

[0235] Compare Example 14 The fifth surface of the main body is flush with the first spacer, the fifth surface of the main body is flush with the second spacer, and the fifth surface of the main body is flush with the third spacer. Except for the above, Comparative Example 14 is the same as Example 5.

[0236] Compare Example 15 The distance between the fifth surface of the main body and the first spacer is 213 μm, the distance between the fifth surface of the main body and the second spacer is 213 μm, and the distance between the fifth surface of the main body and the third spacer is 213 μm. Except for the above, Comparative Example 15 is the same as Example 5.

[0237] Compare Example 16 The distance between the fifth surface of the main body and the first spacer is 320 μm, the distance between the fifth surface of the main body and the second spacer is 320 μm, and the distance between the fifth surface of the main body and the third spacer is 320 μm. Except for the above, Comparative Example 16 is the same as Example 5.

[0238] [Experimental Example: Performance of Coil Electronic Components] After manufacturing fifty (50) coil electronic components for each of Examples 1 to 6 and Comparative Examples 1 to 16, the inductances of the first, second, third, and fourth coils were measured, and the rate of increase in the inductance of the second, third, and fourth coils was calculated based on the inductance of the first coil. The rate of increase in the inductance of the second coil was calculated by subtracting the inductance of the first coil from the inductance of the second coil and dividing the resulting value by the inductance of the first coil. The rate of increase in the inductance of the third and fourth coils was calculated using the same method. A rate of increase in inductance less than 3% was considered “suitable,” and a rate of increase in inductance greater than or equal to 3% was considered “unsuitable.”

[0239] Furthermore, a coil is considered "suitable" when its inductance is less than 8.8nH, and "unsuitable" when its inductance is greater than or equal to 8.8nH.

[0240] The results are summarized in Table 1.

[0241] (Table 1)

[0242]

[0243] Referring to Table 1, the inductance increase rate of the second, third, and fourth coils of the coil electronic assemblies according to Examples 1 to 6 is less than 3%. In the coil electronic assemblies according to Comparative Examples 1 to 3, 8 to 11, and 15 to 16, there are cases where the inductance increase rate of the second coil and the third coil is greater than or equal to 3%, and in the coil electronic assemblies according to Comparative Examples 4 to 7 and 12 to 15, there are cases where the inductance of the second coil and the third coil exceeds 8.8 nH. In the coil electronic assemblies according to Examples 1 to 6, the deviation between the inductance of the first and fourth coils and the inductance of the second and third coils is relatively small, while in the coil electronic assemblies according to Comparative Examples 1 to 16, the deviation between the inductance of the first and fourth coils and the inductance of the second and third coils is relatively large, or the inductance of the second and third coils is relatively large. Because the spacers of the coil electronic assemblies in Comparative Examples 6-8 and 14-16 have the same shape, the inductance of the second coil and the inductance of the third coil increase due to the interference of the cross flux between the different coils.

[0244] While this disclosure has been described in conjunction with what is now considered to be actual embodiments, it should be understood that this disclosure is not limited to the disclosed embodiments, but is intended to cover various modifications and equivalents included within the spirit and scope of the appended claims.

Claims

1. A coil electronic assembly, comprising: The main body includes magnetic materials; Three or more coils are embedded in the body, the three or more coils including a first coil, a second coil and a third coil; Multiple external electrodes are disposed on the outside of the main body and connected to the three or more coils; as well as The system includes multiple spacers, including a first spacer between the first coil and the second coil, and a second spacer between the second coil and the third coil. The multiple spacers have a permeability different from that of the main body. The first interval portion has a shape that is different from that of the second interval portion.

2. The coil electronic assembly according to claim 1, wherein, The three or more coils further include a fourth coil, wherein the first coil, the second coil, the third coil, and the fourth coil are spaced apart from each other in a first direction. The plurality of spacing portions further includes a third spacing portion, wherein the first spacing portion is disposed in a first region between the first coil and the second coil, the second spacing portion is disposed in a second region between the second coil and the third coil, and the third spacing portion is disposed in a third region between the third coil and the fourth coil. The third spacer has a shape that is different from the shape of the first spacer or the shape of the second spacer.

3. The coil electronic assembly according to claim 2, wherein, The first and third intervals have the same shape, and the second interval has a different shape from the same shape.

4. The coil electronic assembly according to claim 3, wherein, In a second direction intersecting the first direction, both the first spacer and the third spacer are spaced apart from the outer surface of the body.

5. The coil electronic assembly according to claim 4, wherein, The body includes a first edge region located in the second direction between the outer surface of the body and the first coil, a second edge region located in the second direction between the outer surface of the body and the second coil, a third edge region located in the second direction between the outer surface of the body and the third coil, and a fourth edge region located in the second direction between the outer surface of the body and the fourth coil. The distance between the outer surface of the main body and the first spacing portion is less than or equal to 1 / 3 of the average thickness of the first edge region and the second edge region in the second direction, and The distance between the outer surface of the main body and the third spacer is less than or equal to 1 / 3 of the average thickness of the third edge region and the fourth edge region in the second direction.

6. The coil electronics assembly according to claim 4, wherein, In the second direction, the second spacer is flush with the outer surface of the body.

7. The coil electronic assembly according to claim 3, wherein, In a second direction intersecting the first direction, both the first and third spacers are flush with the outer surface of the main body.

8. The coil electronics assembly according to claim 7, wherein, In the second direction, the second spacer portion is spaced apart from the outer surface of the body.

9. The coil electronic assembly according to claim 8, wherein, The body includes a first edge region located in the second direction between the outer surface of the body and the first coil, a second edge region located in the second direction between the outer surface of the body and the second coil, a third edge region located in the second direction between the outer surface of the body and the third coil, and a fourth edge region located in the second direction between the outer surface of the body and the fourth coil. The distance between the outer surface of the main body and the second spacer is less than or equal to 1 / 3 of the average thickness of the second edge region and the third edge region in the second direction.

10. The coil electronics assembly according to claim 2, wherein, The first region, the second region, and the third region each have a first size, a second size, and a third size, respectively, in the first direction. The first spacer, the second spacer, and the third spacer have a first thickness, a second thickness, and a third thickness, respectively, in the first direction. The first thickness is greater than 24% and less than 42% of the first size. The second thickness is greater than 24% and less than 42% of the second dimension, and The third thickness is greater than 24% of the third dimension and less than 42% of the third dimension.

11. The coil electronic assembly according to claim 2, further comprising: The first support member, the second support member, the third support member, and the fourth support member are embedded in the main body and spaced apart from each other. in, The first coil is mounted on the first support member. The second coil is mounted on the second support member. The third coil is disposed on the third support member, and The fourth coil is mounted on the fourth support member.

12. The coil electronics assembly according to claim 11, further comprising: The first through hole penetrates the first supporting member. The second through hole penetrates the second support member. The third through hole penetrates the third support member, and The fourth through hole penetrates the fourth support member. in, The first coil includes a first coil pattern and a second coil pattern, which are respectively disposed on a first surface and a second surface opposite to each other on the first support member, and are connected to each other through the first through hole. The second coil includes a third coil pattern and a fourth coil pattern, which are respectively disposed on a first surface and a second surface opposite to each other on the second support member, and are connected to each other through the second through hole. The third coil includes a fifth coil pattern and a sixth coil pattern, which are respectively disposed on the opposing first and second surfaces of the third support member and connected to each other through the third through hole. The fourth coil includes a seventh coil pattern and an eighth coil pattern, which are respectively disposed on the first and second surfaces opposite to each other on the fourth support member and connected to each other through the fourth through hole.

13. The coil electronics assembly according to claim 2, wherein, The main body comprises a stack of multiple magnetic sheets, and The first coil, the second coil, the third coil, and the fourth coil each include a plurality of conductor patterns disposed on the plurality of magnetic sheets and connected to each other.

14. The coil electronics assembly according to claim 2, wherein, Each of the first coil, the second coil, the third coil, and the fourth coil includes at least one turn of wire.

15. The coil electronics assembly according to claim 14, wherein, The main body includes a first core penetrating the first coil, a second core penetrating the second coil, a third core penetrating the third coil, and a fourth core penetrating the fourth coil.

16. The coil electronics assembly of claim 14, further comprising: An insulating layer is disposed on the surface of the at least one turn of the conductor.

17. The coil electronics assembly according to claim 2, wherein, The relative permeability of each of the first spacer, the second spacer, and the third spacer is greater than or equal to 30 and less than or equal to 40.

18. The coil electronics assembly according to claim 1, wherein, The first spacing portion is spaced apart from the second spacing portion in a first direction, and In a second direction intersecting the first direction, the first spacer is spaced apart from the outer surface of the body, and the second spacer is flush with the outer surface of the body.

19. The coil electronics assembly according to claim 18, wherein, The first spacing portion is disposed in a first region located between the first coil and the second coil. The second spacing portion is disposed in a second region located between the second coil and the third coil. The first region and the second region have a first size and a second size respectively in the first direction. The first spacer and the second spacer have a first thickness and a second thickness, respectively, in the first direction. The first thickness is greater than 24% and less than 42% of the first size, and The second thickness is greater than 24% of the second dimension and less than 42% of the second dimension.

20. The coil electronics assembly according to claim 1, wherein, The relative permeability of each of the first spacer and the second spacer is greater than or equal to 30 and less than or equal to 40.

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