Patent Publication Number: US-2022216002-A1

Title: Coil component

Description:
CROSS-REFERENCE TO RELATED APPLICATION(S) 
     The present application claims the benefit of priority to Korean Patent Application No. 10-2021-0000990, filed on Jan. 5, 2021 in the Korean Intellectual Property Office, the entire disclosure of which is incorporated herein by reference. 
     BACKGROUND 
     1. Field 
     The present disclosure relates to a coil component. 
     2. Description of Related Art 
     An inductor, a coil component, is a typical passive electronic component used in electronic devices, along with a resistor and a capacitor. 
     A thin film type inductor is manufactured by forming a coil portion on a substrate through a plating process, forming and curing a resin composite, in which a filler and a resin are mixed, on the substrate to manufacture a component body, and forming an external electrode on an external surface of the component body. 
     SUMMARY 
     An aspect of the present disclosure is to provide a coil component in which when a coil portion is formed through a plating process, a plating growth angle of a plating layer is controlled such that the coil portion has a height of 100 μm or more. 
     According to an aspect of the present disclosure, a coil component includes a body, a support substrate disposed in the body, a coil portion having at least one turn on one surface of the support substrate, and a first external electrode and a second external electrode disposed on the body to be spaced apart from each other and respectively connected to the coil portion. 100 μm≤0.5*b*tan θ, where, on a cross-section perpendicular to the one surface of the support substrate, ‘P 1 ’ is a point among points at which an outline of a first turn of the coil portion and the one surface of the support substrate intersect, ‘P 2 ’ is a point facing the point P 1  among points at which an outline of a second turn adjacent to the first turn and the one surface of the support substrate intersect, ‘P 3 ’ is a point, facing the second turn, on the outline of the first turn among points at which the first turn has a maximum line width, ‘a’ is a length of a first virtual segment connecting the points P 1  and P 3  to each other, ‘b’ is a length of a second virtual segment connecting the points P 1  and P 2  to each other, and θ is an angle defined by the first and second virtual segments. 
     According to another aspect of the present disclosure, a coil component includes a body; a support substrate disposed in the body; a coil portion having at least one turn on one surface of the support substrate; and a first external electrode and a second external electrode disposed on the body to be spaced apart from each other and respectively connected to the coil portion. A portion of the at least one turn of the coil portion, that is in contact with the support substrate, has a side surface angled less than 90° with the one surface of the support substrate. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
       The above and other aspects, features, and advantages of the present disclosure will be more clearly understood from the following detailed description, taken in conjunction with the accompanying drawings. 
         FIG. 1  is a schematic perspective view of a coil component according to an exemplary embodiment of the present disclosure. 
         FIG. 2  is a cross-sectional view taken along line I-I′ of  FIG. 1 . 
         FIG. 3  is a cross-sectional view taken along line II-II′ of  FIG. 1 . 
         FIG. 4  is a schematic enlarged view illustrating an example of portion ‘A’ of  FIG. 3 . 
         FIG. 5  is a schematic enlarged view illustrating another example of portion ‘A’ of  FIG. 3 . 
         FIG. 6  is a schematic enlarged view illustrating another example of portion ‘A’ of  FIG. 3 . 
         FIG. 7  is a schematic enlarged view illustrating another example of portion ‘A’ of  FIG. 3 . 
     
    
    
     DETAILED DESCRIPTION 
     The terms used in the description of the present disclosure are used to describe a specific embodiment, and are not intended to limit the present disclosure. A singular term includes a plural form unless otherwise indicated. The terms “include,” “comprise,” “is configured to,” etc. of the description of the present disclosure are used to indicate the presence of features, numbers, steps, operations, elements, parts, or combination thereof, and do not exclude the possibilities of combination or addition of one or more additional features, numbers, steps, operations, elements, parts, or combination thereof. Also, the terms “disposed on,” “positioned on,” and the like, may indicate that an element is positioned on or beneath an object, and does not necessarily mean that the element is positioned above the object with reference to a direction of gravity. 
     Terms such as “coupled to,” “combined to,” and the like, may not only indicate that elements are directly and physically in contact with each other, but also include the configuration in which another element is interposed between the elements such that the elements are also in contact with the other component. 
     Sizes and thicknesses of elements illustrated in the drawings are indicated as examples for ease of description, and the present disclosure are not limited thereto. 
     In the drawings, an L direction is a first direction or a length (longitudinal) direction, a W direction is a second direction or a width direction, a T direction is a third direction or a thickness direction. 
     Hereinafter, a coil component according to an exemplary embodiment of the present disclosure will be described in detail with reference to the accompanying drawings. Referring to the accompanying drawings, the same or corresponding components may be denoted by the same reference numerals, and overlapped descriptions will be omitted. 
     In electronic devices, various types of electronic components may be used, and various types of coil components may be used between the electronic components to remove noise, or for other purposes. 
     In other words, in electronic devices, a coil component may be used as a power inductor, a high frequency (HF) inductor, a general bead, a high frequency (GHz) bead, a common mode filter, and the like. 
       FIG. 1  is a schematic perspective view of a coil component according to an exemplary embodiment.  FIG. 2  is a cross-sectional view taken along line I-I′ of  FIG. 1 .  FIG. 3  is a cross-sectional view taken along line II-II′ of  FIG. 1 .  FIG. 4  is a schematic enlarged view illustrating an example of portion ‘A’ of  FIG. 3 . 
     Referring to  FIGS. 1 to 4 , a coil component  1000  according to an exemplary embodiment may include a body  100 , a support substrate  200 , a coil portion  300 , external electrodes  400  and  500 , and an insulating film IF. 
     The body  100  may form an exterior of the coil component  1000  according to the present embodiment, and may have the coil portion  300  and the support substrate  200  embedded therein. 
     The body  100  may be formed to have an overall hexahedral shape. 
     Based on  FIGS. 1 to 3 , the body  100  has a first surface  101  and a second surface  102  opposing each other in a length direction L, a third surface  103  and a fourth surface  104  opposing each other in a width direction W, and a fifth surface  105  and a sixth surface  106  opposing each other in a thickness direction T. Each of the first to fourth surfaces  101 ,  102 ,  103 , and  104  of the body  100  may correspond to a wall surface of the body  100  connecting the fifth surface  105  and the sixth surface  106  of the body  100 . Hereinafter, both end surfaces (one end surface and the other end surface) of the body  100  may refer to the first surface  101  and the second surface  102  of the body  100 , respectively, and both side surfaces (one side surface and the other side surface) of the body  100  may refer to the third surface  103  and the fourth surface  104  of the body  100 , respectively. One surface of the body  100  may refer to the sixth surface  106  of the body  100 , and the other surface of the body  100  may refer to the fifth surface  105  of the body  100 . The sixth surface of the body  100  may be provided as a mounting surface when the coil component  1000  according to the present embodiment is mounted on a mounting substrate such as a printed circuit board (PCB). 
     The body  100  may be formed such that the coil component  1000 , including the external electrodes  400  and  500  to be described later, has a length of 2.0 mm, a width of 1.2 mm, and a thickness of 0.65 mm, but is not limited thereto. Since the above-described sizes of the coil component  1000  are merely illustrative, cases in which a size of the coil component  1000  are smaller or larger than the above-mentioned dimensions may be not excluded from the scope of the present disclosure. 
     The above-described length of the coil component  1000  may refer to a maximum value, among lengths (dimensions) of a plurality of segments, connecting outermost boundary lines of the body  100 , among outermost boundary lines of the coil component  1000  illustrated in a cross-sectional image, and parallel to a length (L) direction of the body  100 , based on an optical microscope or scanning electron microscope (SEM) image for a cross-section of the body  100  in a length-thickness (L-T) direction in a central portion of the body  100  in a width (W) direction. Alternatively, the length of the coil component may refer to arithmetic means of lengths (dimensions) of at least two segments, among a plurality of segments connecting outermost boundary lines of the coil component  1000  illustrated in the cross-sectional image, and parallel to the length (L) direction of the body  100 . 
     The above-described thickness of the coil component  1000  may refer to a maximum value, among thicknesses (dimensions) of a plurality of segments, connecting outermost boundary lines of the body  100 , among outermost boundary lines of the coil component  1000  illustrated in a cross-sectional image, and parallel to a thickness (T) direction of the body  100 , based on an optical microscope or scanning electron microscope (SEM) image for a cross-section of the body  100  in a length-thickness (L-T) direction in a central portion of the body  100  in a width (W) direction. Alternatively, the length of the coil component may refer to arithmetic means of thicknesses (dimensions) of at least two segments, among a plurality of segments connecting outermost boundary lines of the coil component  1000  illustrated in the cross-sectional image, and parallel to the thickness (T) direction of the body  100 . 
     The above-described width of the coil component  1000  may refer to a maximum value, among widths (dimensions) of a plurality of segments, connecting outermost boundary lines of the body  100 , among outermost boundary lines of the coil component  1000  illustrated in a cross-sectional image, and parallel to a width (W) direction of the body  100 , based on an optical microscope or scanning electron microscope (SEM) image for a cross-section of the body  100  in a length-thickness (L-T) direction in a central portion of the body  100  in a width (W) direction. Alternatively, the length of the coil component may refer to arithmetic means of widths (dimensions) of at least two segments, among a plurality of segments connecting outermost boundary lines of the coil component  1000  illustrated in the cross-sectional image, and parallel to the width (W) direction of the body  100 . 
     Alternatively, each of the length, the width, and the thickness of the coil component  1000  may be measured by a micrometer measurement method. In the micrometer measurement method, measurement may be performed by setting a zero point using a micrometer (instrument) with gauge repeatability and reproducibility (R&amp;R), inserting the coil component  1000  inserted between tips of the micrometer, and turning a measurement lever of the micrometer. When the length of the coil component  1000  is measured by a micrometer measurement method, the length of the coil component  1000  may refer to a value measured once or an arithmetic mean of values measured two or more times. This may be equivalently applied to the width and the thickness of the coil component  1000 . 
     The body  100  may include an insulating resin and a filler dispersed in the insulating resin. The filler may be a dielectric material or a magnetic material. The magnetic material may be ferrite or magnetic metal powder particles. The dielectric material may be an organic filler or an inorganic filler. For example, the body  100  may be formed laminating one or more magnetic composite sheets in which magnetic metal powder particles are dispersed in an insulating resin. 
     Examples of the ferrite powder particles may include at least one or more of spinel type ferrites such as Mg—Zn-based ferrite, Mn—Zn-based ferrite, Mn—Mg-based ferrite, Cu—Zn-based ferrite, Mg—Mn—Sr-based ferrite, Ni—Zn-based ferrite, and the like, hexagonal ferrites such as Ba—Zn-based ferrite, Ba—Mg-based ferrite, Ba—Ni-based ferrite, Ba—Co-based ferrite, Ba—Ni—Co-based ferrite, and the like, garnet type ferrites such as Y-based ferrite, and the like, and Li-based ferrites. 
     The magnetic metal powder particle may include one or more selected from the group consisting of iron (Fe), silicon (Si), chromium (Cr), cobalt (Co), molybdenum (Mo), aluminum (Al), niobium (Nb), copper (Cu), and nickel (Ni). For example, the magnetic metal powder particle may be at least one or more of a pure iron powder, a Fe—Si-based alloy powder, a Fe—Si—Al-based alloy powder, a Fe—Ni-based alloy powder, a Fe—Ni—Mo-based alloy powder, a Fe—Ni—Mo—Cu-based alloy powder, a Fe—Co-based alloy powder, a Fe—Ni—Co-based alloy powder, a Fe—Cr-based alloy powder, a Fe—Cr—Si-based alloy powder, a Fe—Si—Cu—Nb-based alloy powder, a Fe—Ni—Cr-based alloy powder, and a Fe—Cr—Al-based alloy powder. 
     The magnetic metal powder particle may be amorphous or crystalline. For example, the magnetic metal powder particle may be a Fe—Si—B—Cr-based amorphous alloy powder, but is not limited thereto. 
     The inorganic filler may be at least one or more selected from the group consisting of silica (SiO 2 ), alumina (Al 2 O 3 ), silicon carbide (SiC), barium sulfate (BaSO 4 ), talc, mud, a mica powder, aluminum hydroxide (Al(OH) 3 ), magnesium hydroxide (Mg(OH) 2 ), calcium carbonate (CaCO 3 ), magnesium carbonate (MgCO 3 ), magnesium oxide (MgO), boron nitride (BN), aluminum borate (AlBO 3 ), barium titanate (BaTiO 3 ), and calcium zirconate (CaZrO 3 ). 
     Each of the fillers may have an average diameter of about 0.1 μm to 30 μm, but is not limited thereto. 
     The body  100  may include two or more types of filler dispersed in a resin. The term “different types of filler” means that the fillers, dispersed in the resin, are distinguished from each other by at least one of average diameter, composition, crystallinity, shape, and magnetic characteristics (for example, whether they have the same permeability). 
     Hereinafter, a filler will be assumed as being magnetic metal powder particles for ease of description, but the present disclosure is not limited to the body  100  having a structure in which magnetic metal power particles are disposed in an insulating resin. 
     The insulating resin may include epoxy, polyimide, liquid crystal polymer, or the like, in a single or combined form, but is not limited thereto. 
     The body  100  may include a core  110  penetrating through the support substrate  200  and the coil portion  300  to be described later. The core  110  may be formed by filling a central portion of each of the coil portion  300  and the support substrate  200  with a magnetic composite sheet, but the present disclosure is not limited thereto. 
     The support substrate  200  may be embedded in the body  100 . The support substrate  200  may support the coil portion  300  to be described later. 
     The support substrate  200  may include an insulating material, for example, a thermosetting insulating resin such as an epoxy resin, a thermoplastic insulating resin such as polyimide, or a photosensitive insulating resin, or the support substrate  200  may include an insulating material in which a reinforcing material such as a glass fiber or an inorganic filler is impregnated with an insulating resin. For example, the support substrate  200  may include an insulating material such as prepreg, Ajinomoto Build-up Film (ABF), FR-4, a bismaleimide triazine (BT) film, a photoimageable dielectric (PID) film, and the like, but are not limited thereto. 
     The inorganic filler may be at least one or more selected from the group consisting of silica (SiO 2 ), alumina (Al 2 O 3 ), silicon carbide (SiC), barium sulfate (BaSO 4 ), talc, mud, a mica powder, aluminum hydroxide (Al(OH) 3 ), magnesium hydroxide (Mg(OH) 2 ), calcium carbonate (CaCO 3 ), magnesium carbonate (MgCO 3 ), magnesium oxide (MgO), boron nitride (BN), aluminum borate (AlBO 3 ), barium titanate (BaTiO 3 ), and calcium zirconate (CaZrO 3 ). 
     When the support substrate  200  is formed of an insulating material including a reinforcing material, the support substrate  200  may provide more improved rigidity. When the support substrate  200  is formed of an insulating material including no glass fiber, the support substrate  200  is advantageous for thinning the coil component  1000 . In addition, the effective volume of the coil portion  300  and/or the magnetic material may be increased, based on a component having the same volume, to improve component characteristics. When the support substrate  200  is formed of an insulating material including a photosensitive insulating resin, the number of processes for forming the coil portion  300  may be decreased. Therefore, it may be advantageous in reducing production costs, and a fine via may be formed. 
     The coil portion  300  may be disposed in the body  100  to express characteristics of the coil component  1000 . For example, when the coil component  1000  is used as a power inductor, the coil portion  300  may store an electric field as a magnetic field to maintain an output voltage, serving to stabilize power of an electronic device. 
     The coil portion  300  may include coil patterns  311  and  312 , vias  320 , and lead-out patterns  331  and  332 . 
     Specifically, based on directions of  FIGS. 1 to 3 , a first coil pattern  311  and a second lead-out pattern  331  may be disposed on an upper surface of the support substrate  200  facing the fifth surface  105  of the body  100 , and a second coil pattern  312  and a second lead-out pattern  332  may be disposed on a lower surface of the support substrate  200  facing the upper surface of the support substrate  200 . 
     Referring to  FIGS. 1 to 3 , the first coil pattern  311  may be in contact with and connected to the first lead-out pattern  331  on the upper surface of the support substrate  200 . The second coil pattern  312  may be in contact with and connected to the second lead-out pattern  332  on the lower surface of the support substrate  200 . The via  320  may penetrate through the support substrate  200  to be in contact with and connected to an internal end portion of each of the first coil pattern  311  and the second coil pattern  312 . The first lead-out pattern  331  may be exposed to the first surface  101  of the body  100  to be is in contact with and connected to the first external electrode  400 , to be described later, disposed on the first surface  101  of the body  100 . The second lead-out pattern  332  may be exposed to the second surface  102  of the body  100  to be in contact with and connected to the second external electrode  500 , to be described later, disposed on the second surface  101  of the body  100 . Therefore, the coil portion  300  may function as a single coil connected between the first external electrode  400  and the second external electrode  500  in series. 
     Each of the first coil pattern  311  and the second coil pattern  312  may be in the form of a planar spiral in which at least one turn is formed around the core  110 . For example, the first coil pattern  311  may form at least one turn around the core  110  on the upper surface of the support substrate  200 . 
     The coil portion  300  may include at least three conductive layers  300 A,  300 B, and  300 C. Specifically, the coil portion  300  may includes a conductive thin film  300 A disposed on the support substrate  200 , a conductive pattern layer  300 B disposed on the conductive thin film  300 A to be spaced apart from the support substrate  200 , and an upper conductive layer  300 C disposed on the conductive pattern layer  300 B to cover at least a portion of a side surface of the conductive pattern layer  300 B. In the present embodiment, the upper conductive layer  300 C may cover a side surface of each of the conductive thin film  300 A and the conductive pattern layer  300 B to be in contact with the support substrate  200 . Since the coil portion  300  has the coil patterns  311  and  312 , the vias  320 , and lead-out patterns  331  and  332 , each of the coil patterns  311  and  312 , the vias  320 , and the lead-out patterns  331  and  332  may include first to upper conductive layers  300 A,  300 B, and  300 C. Hereinafter, only the first coil pattern  311  will be described with reference to  FIG. 4 , but each of the second coil pattern  312 , the first and second lead-out patterns  331  and  332 , and the via  320  may also include first to third upper conductive layers  300 A,  300 B, and  300 C to be described in the first coil pattern  311 . 
     Referring to  FIG. 4 , each turn of the first coil pattern  311  may include a conductive thin film  300 A disposed on the upper surface of the support substrate  200 , a conductive pattern layer  300 B disposed on the conductive thin film  300 A and spaced apart from the support substrate  200 , and an upper conductive layer  300 C disposed on the conductive pattern layer  300 B to cover a side surface of each of the conductive thin film  300 A and the conductive pattern layer  300 B to be in contact with the support substrate  200 . 
     The conductive thin film  300 A may be a seed layer for forming the conductive pattern layer  300 B through a plating process. The conductive thin film  300 A may include, for example, at least one of copper (Cu), molybdenum (Mo), nickel (Ni), titanium (Ti), and chromium (Cr). As an example, the conductive thin film  300 A may be formed by vapor deposition such as sputtering, and may include molybdenum (Mo). As another example, the thin conductive layer  300 A may be formed by electroless plating, and may include copper (Cu). A thickness of the thin conductive layer  300 A may be 5 μm or less. When the thickness of the thin conductive layer  300 A is greater than 5 μm, it is uneconomical. The length of the conductive thin film  300 A may refer to a maximum value, among lengths (dimensions) of a plurality of segments, connecting two boundary lines opposing each other in a length (L) direction of the body  100 , among outermost boundary lines of the conductive thin film  300 A illustrated in a cross-sectional image, and parallel to the length (L) direction of the body  100 , based on an optical microscope or scanning electron microscope (SEM) image for a cross section of the body  100  in a length-thickness (L-T) direction in a central portion of the body  100  in a width (W) direction. Alternatively, the length of the coil component may refer to a minimum value, among lengths (dimensions) of a plurality of segments connecting two boundary lines opposing each other in a length (L) direction, among outermost boundary lines of the conductive thin film  300 A illustrated in the cross-sectional image, and parallel to the length (L) direction of the body  100 . Alternatively, the length of the coil component may refer to arithmetic means of at least three segments, among a plurality of segments connecting two boundary lines opposing each other in a length (L) direction, among outermost boundary lines of the conductive thin film  300 A illustrated in the cross-sectional image, and parallel to the length (L) direction of the body  100 . In calculation of the thickness of the conductive thin film  300 A using the above-described method, when the coil portion  300  has a plurality of turns, the thickness of the conductive thin film  300 A may be calculated by applying the above-described method to the conductive thin film  300 A of one turn. In addition, a thickness of the conductive thin film  300 A in each of the turns may be calculated using the above-described method, and the calculated thicknesses may be arithmetically averaged to calculate a thickness of the conductive thin film  300 A. 
     The conductive pattern layer  300 B may be disposed on the thin conductive layer  300 A, and may be spaced apart from the support substrate  200 . For example, the conductive pattern layer  300 B may be disposed to be in contact with the conductive thin film  300 A in the form of exposing a side surface of the conductive thin film  300 A. As an example, the conductive thin film  300 A may be formed by forming a metal layer fora conductive thin film on an entire upper surface of the support substrate  200 , forming an opening-patterned plating resist on the metal layer, removing the plating resist from the upper surface of the support substrate  200 , and removing a portion exposed externally by removing the plating resist of the metal layer. The conductive thin film  300 A and the conductive pattern layer  300 B may be formed by such an exemplary manufacturing process, so that the conductive pattern layer  300 B may expose a side surface of the conductive thin film  300 A to be spaced apart from the support substrate  200 . 
     The conductive pattern layer  300 B may be formed by electroplating using the thin conductive layer  300 A as a seed layer. The conductive pattern layer  300 B may include at least one of, for example, copper (Cu), aluminum (Al), silver (Ag), gold (Au), tin (Sn), molybdenum (Mo), nickel (Ni), titanium (Ti), and chromium (Cr). The conductive pattern layer  300 B may include a metal different from the conductive thin film  300 A. In this case, during a process of removing the above-described metal layer (a configuration to be the conductive thin film  300 A in a subsequent process, as described above), only the metal layer may be selectively removed to significantly reduce conductor loss of the pattern plating layer  300 A, but the present disclosure is not limited thereto. A lower surface of the conductive pattern layer  300 B, disposed to be in contact with the conductive thin film  300 A, may have the same area of an upper area of the conductive pattern layer  300 B. For example, the conductive pattern layer  300 B may have a rectangular cross-sectional shape based on a cross-section perpendicular to one surface of the support substrate  200  (for example, a cross-section in a width-thickness (W-T) direction, as illustrated in  FIGS. 3 and 4 ). 
     The upper conductive layer  300 C may be disposed on the conductive pattern layer  300 B to cover a side surface of each of the conductive thin film  300 A and the conductive pattern layer  300 B to be in contact with the support substrate  200 . The upper conductive layer  300 C may be formed by electroplating using the conductive pattern layer  300 B as a seed layer. In the upper conductive layer  300 C, a thickness (dimension) of a region disposed on the upper surface of the conductive pattern layer  300 B may be greater than a width (dimension) of a region disposed on a side surface of the conductive pattern layer  300 B. For example, the upper conductive layer  300 C may have an anisotropic shape in which a growth in a horizontal direction is greater than a growth in a vertical direction. Due to the anisotropic shape of the upper conductive layer  300 C, a cross-sectional area of a conductor constituting the coil portion  300  may be further increased while preventing a short-circuit from occurring between adjacent turns of a final coil formed to the upper conductive layer  300 C. For example, the upper conductive layer  300 C may be formed by anisotropically plating the conductive pattern layer  300 B. In this case, the total number of processes may be decreased based on the thickness of the final coil. For example, when a thickness of the final coil is implemented to be greater than 100 μm, in the case in which the final coil is implemented by pattern plating using a plating resist, at least two plating resists and at least two plating processes are required due to the limitations of the current technology. However, in the present embodiment, the conductive pattern layer  300 B may be formed by pattern plating using a plating resist and the upper conductive layer  300 C may be formed by anisotropic plating using the conductive pattern layer  300 B as a seed layer, so that at least one plating resist lamination, exposure, and development process may be omitted, as compared with the related art. 
     A thickness (dimension) of the region, disposed on an upper surface of the conductive pattern layer  300 B, of the upper conductive layer  300 C may refer to a maximum value, among lengths (dimensions) of a plurality of segments, connecting a boundary line corresponding to an upper surface of the conductive pattern layer  300 B and a boundary line corresponding to an upper surface of the upper conductive layer  300 C to each other in the thickness (T) direction, based on an optical microscope or scanning electron microscope (SEM) image for a cross section of the body  100  in a length-thickness (L-T) direction in a central portion of the body  100  in a width (W) direction. Alternatively, the thickness (dimension) of the region, disposed on an upper surface of the conductive pattern layer  300 B may refer to a minimum value, among lengths (dimensions) of a plurality of segments, connecting a boundary line corresponding to an upper surface of the conductive pattern layer  300 B and a boundary line corresponding to an upper surface of the upper conductive layer  300 C to each other in the thickness (T) direction, based on the optical microscope or scanning electron microscope (SEM) image. Alternatively, the thickness (dimension) of the region, disposed on an upper surface of the conductive pattern layer  300 B may refer to arithmetic means of at least two segments, among lengths (dimensions) of a plurality of segments, connecting a boundary line corresponding to an upper surface of the conductive pattern layer  300 B and a boundary line corresponding to an upper surface of the upper conductive layer  300 C to each other in the thickness (T) direction, based on the optical microscope or scanning electron microscope (SEM) image. 
     The upper conductive layer  300 C may have a shape in which an upper side is upwardly convex in a cross-section perpendicular to the upper surface of the support substrate  200 . For example, an upper surface of the upper conductive layer  300 C may be a curved surface having an upwardly convex shape. On the other hand, the upper surface of the conductive pattern layer may be a substantially flat surface. In this case, since the angled portion of the upper conductive layer  300 C may be significantly reduced, DC resistance Rdc of the coil portion  300  may be reduced. 
     The upper conductive layer  300 C may include at least one of, for example, molybdenum (Mo), nickel (Ni), titanium (Ti), and chromium (Cr). In the present embodiment, the upper conductive layer  300 C may be a copper anisotropic plating layer, but the present disclosure is not limited thereto. 
     As an example, when the first coil pattern  311 , the via  320 , and the first lead-out pattern  331  are formed on the upper surface of the support substrate  200  through a plating process, the conductive thin films  300 A of the via  320  and the first lead-out pattern  331  may be formed together in the same process to be integrated with each other. For example, a boundary may not be formed between the conductive thin films  300 A of the first coil pattern  311 , the via  320 , and the first lead-out pattern  331 . 
     When, on a cross-section perpendicular to the upper surface of the support substrate  200 , ‘P 1 ’ is a point among points at which an outline of a first turn of the coil portion  300  and the upper surface of the support substrate  200  intersect, ‘P 2 ’ is a point facing the point P 1  among points at which an outline of a second turn adjacent to the first turn and the upper surface of the support substrate  200  intersect, ‘P 3 ’ is a point, facing the second turn, on the outline of the first turn among points at which the first turn has a maximum line width, ‘a’ is a length of a first virtual segment connecting the points P 1  and P 3  to each other, ‘b’ is a length of a second virtual segment connecting the points P 1  and P 2  to each other, and θ is an angle defined by the first and second virtual segments, the coil component  1000  satisfies an equation of 100 μm≤0.5*b*tan θ. Hereinafter, this will be described in detail. 
     Referring to  FIGS. 3 and 4 , the first coil pattern  311  may include a first turn  311 - 1 , a second turn  311 - 2 , a third turn  311 - 3 , and a fourth turn  311 - 4  formed on the upper surface of the support substrate  200  in a direction toward the third surface  103  of the body  100 . As an example, points P 1 , P 2 , and P 3  are defined as follows: ‘P 1 ’ is one point (a point disposed to the right, based on a direction of  FIG. 4 ) of two points, formed by contacting an outline of the first turn  311 - 1  with the support substrate  200 , ‘P 2 ’ is one point (a point disposed to the left, based on the direction of  FIG. 4 ), facing the point P 1 , of two points, formed by contacting an outline of a second turn  311 - 2  adjacent to the first turn  311 - 1  with the support substrate  200 , and ‘P 3 ’ is one point (a point disposed to the right, based on the direction of  FIG. 4 ), facing the second turn  311 - 2 , of two points corresponding to a region, in which the first turn  311 - 1  has a maximum line width, in the outline of the first turn  311 - 1 . The points P 1 , P 2 , and P 3  may be used to define two virtual segments L 1  and L 2 , intersecting each other at the point P 1 , and to define a length ‘a’ of a first virtual segment L 1  and a length ‘b’ of a second virtual segment L 2 . For example, the first virtual segment L 1  having the length ‘a’ may be defined when connecting the points P 1  and P 3 , and the second virtual segment L 2  having the length ‘b’ may be defined when connecting the points P 1  and P 2 . Since the first virtual segment L 1  and the second virtual segment L 2  intersect each other at the point P 1 , an angle formed by the first virtual segment L 1  and the second virtual segment L 2  at the point P 1  may be defined as θ. Under the above definitions, the coil component according to the present embodiment may satisfy the equation of 100 μm≤0.5*b*tan θ. 
     In general, in the case in which an anisotropic plating layer is used as a final layer of a coil when the coil is formed by plating, the anisotropic plating layer has a line width increased in an upward direction, and thus, has a maximum line width at a specific height. In addition, the line width of the anisotropic plating layer tends to be smaller than the maximum line width at a height greater than the specific height. In the case of the present embodiment, an angle of an outline of each turn of the coil portion  300  may be controlled using the points P 1 , P 2 , and P 3 , so that a height of the coil portion  300 , a final coil formed to the upper plating layer  300 C, may be greater than 100 μm. In the case of the present embodiment, since the upper conductive layer  300 C, an anisotropic plating layer, surrounds the entire exposed surfaces of the conductive thin film  300 A and the conductive pattern layer  300 B to be in contacts with the support substrate  200 , the outline of each turn of the coil portion  300  may be formed by a surface of the upper conductive layer  300 C. 
     The length ‘b’ of the second virtual segment L 2  may be 6 μm or more and 20 μm or less. When the length ‘b’ of the second virtual segment L 2  is less than 6 μm, the upper conductive layers  300 C, final layers of the coil portion  300 , may be in contact with each other in adjacent turns to cause a short-circuit between the adjacent turns. When the length ‘b’ of the second virtual segment L 2  is greater than 20 μm, a separation space between turns of the coil portion  300  may be relatively increased, so that it may be disadvantageous in increasing the number of turns. 
     The angle θ formed by the first virtual segment L 1  and the second virtual segment L 2  may be 84.3° or more and 89.0° or less. When the angle θ formed by the first virtual segment L 1  and the second virtual segment L 2  is less than 84.3°, a distance between a lower side of an outline of each turn (for example, P 1 ) and an upper side of an outline of each turn (for example, P 3 ), for example, a distance between P 1  and P 3  in the width direction W of  FIG. 4 , may be increased to cause a short-circuit between adjacent turns. When the angle θ formed by the first virtual segment L 1  and the second virtual segment L 2  is greater than 89.0°, it may be difficult to be implemented using a current anisotropic plating technology. 
     In the present embodiment, to satisfy the equation of 100 μm≤0.5*b*tan θ, as an example, when b=6 μm, θ may be 88.3° or more and 89.0° or less. As another example, when b=8 μm, θ may be 87.7° or more and 89.0° or less. As another example, when b=10 μm, θ may be 87.2° or more and 89.0° or less. As another example, when b=12 μm, θ may be 86.6° or more and 89.0° or less. As another example, when b=14 μm, θ may be 86.0° or more and 89.0° or less. As another example, when b=16 μm, θ may be 85.5° or more and 89.0° or less. As another example, when b=18 μm, θ may be 84.9° or more and 89.0° or less. As another example, when b=20 μm, θ may be 84.3° or more and 89.0° or less. 
     Table 1 illustrates a change in height H 1 , at which each turn of a coil portion has a maximum line width when b is 6 μm, depending on θ. Refer to Table 1, when b is 6 μm, in the range in which θ is 88.3° or more to 89.0° or less, the height H 1  at which each turn of the coil portion has a maximum line width may be 100 μm or more while preventing a short-circuit between turns. 
     
       
         
           
               
               
               
               
               
             
               
                   
                 TABLE 1 
               
               
                   
                   
               
               
                   
                 θ 
                 b/2 
                 a 
                 H1 
               
               
                   
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
               
            
               
                   
                 83.0 
                 3 
                 25 
                 24 
               
               
                   
                 84.0 
                 3 
                 29 
                 29 
               
               
                   
                 85.0 
                 3 
                 34 
                 34 
               
               
                   
                 88.2 
                 3 
                 96 
                 95 
               
               
                   
                 88.3 
                 3 
                 101 
                 101 
               
               
                   
                 88.5 
                 3 
                 115 
                 115 
               
               
                   
                 89.0 
                 3 
                 172 
                 172 
               
               
                   
                   
               
            
           
         
       
     
     Table 2 illustrates a change in height H 1 , at which each turn of a coil portion has a maximum line width when b is 8 μm, depending on θ. Referring to Table 2, when b is 8 μm, in the range in which θ is 87.7° or more to 89.0° or less, the height H 1  at which each turn of the coil portion has a maximum line width may be 100 μm or more while preventing a short-circuit between turns. 
     
       
         
           
               
               
               
               
               
             
               
                   
                 TABLE 2 
               
               
                   
                   
               
               
                   
                 θ 
                 b/2 
                 a 
                 H1 
               
               
                   
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
               
            
               
                   
                 83 
                 4 
                 33 
                 33 
               
               
                   
                 84 
                 4 
                 38 
                 38 
               
               
                   
                 85 
                 4 
                 46 
                 46 
               
               
                   
                 86 
                 4 
                 57 
                 57 
               
               
                   
                 87.7 
                 4 
                 100 
                 100 
               
               
                   
                 88 
                 4 
                 115 
                 115 
               
               
                   
                 89 
                 4 
                 229 
                 229 
               
               
                   
                   
               
            
           
         
       
     
     Table 3 illustrates a change in height H 1 , at which each turn of a coil portion has a maximum line width when b is 10 μm, depending on θ. Referring to Table 3, when b is 10 μm, in the range in which θ is 87.2° or more to 89.0° or less, the height H 1  at which each turn of the coil portion has a maximum line width may be 100 μm or more while preventing a short-circuit between turns. 
     
       
         
           
               
               
               
               
               
             
               
                   
                 TABLE 3 
               
               
                   
                   
               
               
                   
                 θ 
                 b/2 
                 a 
                 H1 
               
               
                   
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
               
            
               
                   
                 83 
                 5 
                 41 
                 41 
               
               
                   
                 84 
                 5 
                 48 
                 48 
               
               
                   
                 85 
                 5 
                 57 
                 57 
               
               
                   
                 86 
                 5 
                 72 
                 72 
               
               
                   
                 87.2 
                 5 
                 102 
                 102 
               
               
                   
                 88 
                 5 
                 143 
                 143 
               
               
                   
                 89 
                 5 
                 286 
                 286 
               
               
                   
                   
               
            
           
         
       
     
     Table 4 illustrates a change in height H 1 , at which each turn of a coil portion has a maximum line width when b is 12 μm, depending on θ. Referring to Table 4, when b is 12 μm, in the range in which θ is 86.6° or more to 89.0° or less, the height H 1  at which each turn of the coil portion has a maximum line width may be 100 μm or more while preventing a short-circuit between turns. 
     
       
         
           
               
               
               
               
               
             
               
                   
                 TABLE 4 
               
               
                   
                   
               
               
                   
                 θ 
                 b/2 
                 a 
                 H1 
               
               
                   
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
               
            
               
                   
                 83 
                 6 
                 49 
                 49 
               
               
                   
                 84 
                 6 
                 57 
                 57 
               
               
                   
                 85 
                 6 
                 69 
                 69 
               
               
                   
                 86.6 
                 6 
                 101 
                 101 
               
               
                   
                 87 
                 6 
                 115 
                 114 
               
               
                   
                 88 
                 6 
                 172 
                 172 
               
               
                   
                 89 
                 6 
                 344 
                 344 
               
               
                   
                   
               
            
           
         
       
     
     Table 5 illustrates a change in height H 1 , at which each turn of a coil portion has a maximum line width when b is 14 μm, depending on θ. Referring to Table 5, when b is 14 μm, in the range in which θ is 86.0° or more to 89.0° or less, the height H 1  at which each turn of the coil portion has a maximum line width may be 100 μm or more while preventing a short-circuit between turns. 
     
       
         
           
               
               
               
               
               
             
               
                   
                 TABLE 5 
               
               
                   
                   
               
               
                   
                 θ 
                 b/2 
                 a 
                 H1 
               
               
                   
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
               
            
               
                   
                 83 
                 7 
                 57 
                 57 
               
               
                   
                 84 
                 7 
                 67 
                 67 
               
               
                   
                 85 
                 7 
                 80 
                 80 
               
               
                   
                 86 
                 7 
                 100 
                 100 
               
               
                   
                 87 
                 7 
                 134 
                 134 
               
               
                   
                 88 
                 7 
                 201 
                 200 
               
               
                   
                 89 
                 7 
                 401 
                 401 
               
               
                   
                   
               
            
           
         
       
     
     Table 6 illustrates a change in height H 1 , at which each turn of a coil portion has a maximum line width when b is 16 μm, depending on θ. Referring to Table 6, when b is 16 μm, in the range in which θ is 85.5° or more to 89.0° or less, the height H 1  at which each turn of the coil portion has a maximum line width may be 100 μm or more while preventing a short-circuit between turns. 
     
       
         
           
               
               
               
               
               
             
               
                   
                 TABLE 6 
               
               
                   
                   
               
               
                   
                 θ 
                 b/2 
                 a 
                 H1 
               
               
                   
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
               
            
               
                   
                 83 
                 8 
                 66 
                 65 
               
               
                   
                 84 
                 8 
                 77 
                 76 
               
               
                   
                 85.5 
                 8 
                 102 
                 102 
               
               
                   
                 86 
                 8 
                 115 
                 114 
               
               
                   
                 87 
                 8 
                 153 
                 153 
               
               
                   
                 88 
                 8 
                 229 
                 229 
               
               
                   
                 89 
                 8 
                 458 
                 458 
               
               
                   
                   
               
            
           
         
       
     
     Table 7 illustrates a change in height H 1 , at which each turn of a coil portion has a maximum line width when b is 18 μm, depending on θ. Referring to Table 7, when b is 18 μm, in the range in which θ is 84.9° or more to 89.0° or less, the height H 1  at which each turn of the coil portion has a maximum line width may be 100 μm or more while preventing a short-circuit between turns. 
     
       
         
           
               
               
               
               
               
             
               
                   
                 TABLE 7 
               
               
                   
                   
               
               
                   
                 θ 
                 b/2 
                 a 
                 H1 
               
               
                   
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
               
            
               
                   
                 83 
                 9 
                 74 
                 73 
               
               
                   
                 84.9 
                 9 
                 101 
                 101 
               
               
                   
                 85 
                 9 
                 103 
                 103 
               
               
                   
                 86 
                 9 
                 129 
                 129 
               
               
                   
                 87 
                 9 
                 172 
                 172 
               
               
                   
                 88 
                 9 
                 258 
                 258 
               
               
                   
                 89 
                 9 
                 516 
                 516 
               
               
                   
                   
               
            
           
         
       
     
     Table 8 illustrates a change in height H 1 , at which each turn of a coil portion has a maximum line width when b is 20 μm, depending on θ. Referring to Table 8, when b is 20 μm, in the range in which θ is 84.3° or more to 89.0° or less, the height H 1  at which each turn of the coil portion has a maximum line width may be 100 μm or more while preventing a short-circuit between turns. 
     
       
         
           
               
               
               
               
               
             
               
                   
                 TABLE 8 
               
               
                   
                   
               
               
                   
                 θ 
                 b/2 
                 a 
                 H1 
               
               
                   
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
               
            
               
                   
                 83 
                 10 
                 82 
                 81 
               
               
                   
                 84.3 
                 10 
                 101 
                 100 
               
               
                   
                 85 
                 10 
                 115 
                 114 
               
               
                   
                 86 
                 10 
                 143 
                 143 
               
               
                   
                 87 
                 10 
                 191 
                 191 
               
               
                   
                 88 
                 10 
                 287 
                 286 
               
               
                   
                 89 
                 10 
                 573 
                 573 
               
               
                   
                   
               
            
           
         
       
     
     In one example, a thickness, a width, and a length of an element in a coil component, or a distance between two points, disclosed in exemplary embodiments of the present disclosure, may be measured in a cross-sectional cut surface of the body  100 . The cut surface may include a cut surface cut the body  100  in the first direction (X direction)-third direction (Z direction) plane, or a cut surface cut the body  100  in the first direction (X direction)-second direction (Y direction) plane. In a case that the cut surface includes a surface cut the body  100  in the first direction (X direction)-third direction (Z direction) plane, the cut surface may cut a central portion of the body  100  in the second direction (Y direction), and in a case that the cut surface includes a surface cut the body  100  in the first direction (X direction)-second direction (Y direction) plane, the cut surface may cut a central portion of the body  100  in the third direction (Z direction). The location of the cut surface is not limited to these examples, and one of ordinary skill may select the cut surface at other locations in the body  100 , if needed. If necessary, multiple measurements may be performed at different or the same locations in the cut surface so that the thickness, width, and length of a targeted element or the distance between targeted points may be obtained by averaging the multiple measurements. Alternatively, the measured dimension may be the maximum value or the minimum value of the multiple measurements. Alternatively, the measured dimension may be a value of a single measurement at a measured region, which may be set by one of ordinary skill in the art. In one example, a scanning electron microscope (SEM) may be used in the measurement, although the present disclosure is not limited thereto. Other methods and/or tool s appreciated by one of ordinary skill in the art, even if not described in the present disclosure, may also be used. 
     An insulating layer IF may be disposed between the coil portion  300  and the body  100  and between the support substrate  200  and the body  100 . The insulating layer IF may be formed along a surface of the support substrate  200  on which the coil patterns  311  and  312  and the lead-out patterns  331  and  332  are formed. The insulating layer IF may be provided to insulate the coil portion  300  and the body  100 , and may include a known insulating material such as parylene, but the present disclosure is not limited thereto. As another example, the insulating layer IF may include an insulating material such as an epoxy resin other than parylene. The insulating layer IF may be formed by vapor deposition, but the present disclosure is not limited thereto. As another example, the insulating layer IF may be formed by laminating and curing an insulating film for forming the insulating layer IF on both surfaces of the support substrate  200  on which the coil portion  300  is formed. Alternatively, the insulating layer IF may be formed by applying and curing an insulating paste for forming an insulating layer IF on both surfaces of the support substrate  200  on which the coil portion  300  is formed. The insulating layer IF may be formed to fill a separation space between turns of the coil portion  300 . 
     The first and second external electrodes  400  and  500  may be disposed on the sixth surface  106  of the body  100  to be spaced apart from each other. In the present embodiment, the first and second external electrodes  400  and  500  may respectively cover the first and second surfaces  101  and  102  of the body  100 , and may extend to at least a portion of each of the third to sixth surfaces  101 ,  102 ,  103 ,  104 ,  105 , and  106  of the body  100 . Specifically, the first external electrode  400  may cover the first surface  101  of the body  100  to be in contact with and connected to the first lead-out pattern  331  exposed to the first surface  101  of the body  100 , and may extend from the first surface  101  of the body  100  to at least a portion of each of the third to sixth surfaces  103 ,  104 ,  105 , and  106  of the body  100 . The second external electrode  500  may cover the second surface  102  of the body  100  to be in contact with and connected to the second lead-out pattern  332  exposed to the second surface  102  of the body  100 , and may extends from the second side  102  of  100 ) to at least a portion of each of the third to sixth sides  103 ,  104 ,  105 ,  106  of the body  100 . The shapes of the first and second external electrodes  400  and  500  illustrated in  FIG. 1  are only exemplary, so that the present disclosure is not limited thereto. As an example, the first external electrode  400  may cover at least a portion of the first surface  101  of the body  100  to be in contact with the first lead-out pattern  331 , and may have a shape extending to only the sixth surface, among the third to sixth surfaces  103 ,  104 ,  105 , and  106  of the body  100 , for example, an “L” shape. Alternatively, the first external electrode  400  may cover at least a portion of the first surface  101  of the body  100  to be in contact with the first lead-out pattern  331 , and may have a shape extending to only the fifth and sixth surfaces  105  and  106 , among the third to sixth surfaces  103 ,  104 ,  105 , and  106  of the body  100 , for example, a “[” shape. 
     The external electrodes  400  and  500  may be formed of a conductive material 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 present disclosure is not limited thereto. Each of the external electrodes  400  and  500  may be formed in a single-layer structure or a multilayer structure. For example, the first external electrode  400  may include a first layer, disposed on the body  100 , and a second layer disposed on the first layer. The first layer may be a copper (Cu) plating layer or a conductive resin layer. The conductive resin layer may be formed by applying a conductive paste, in which conductive powder particles including copper (Cu) and/or silver (Ag) are dispersed in a resin, and curing the applied conductive paste. The second layer may include nickel (Ni) and tin (Sn). The second layer may include, for example, a nickel plating layer disposed on the first layer and including nickel (Ni), and a tin plating layer disposed on the nickel plating layer and including tin (Sn). However, the present disclosure is not limited thereto. 
       FIG. 5  is a schematic enlarged view illustrating another example of portion ‘A’ of  FIG. 3 . 
     Referring to  FIG. 5 , in another embodiment, a coil portion  300  may include a conductive thin film  300 A, a conductive pattern layer  300 B, and an upper conductive layer  300 C. The upper conductive layer  300 C may be disposed on the conductive pattern layer  300 B to cover at least a portion of a side surface of the conductive pattern layer  300 B, and may be spaced apart from a support substrate  200  to expose the side surface of the conductive thin film  300 A. 
     As a result, in the present embodiment, an outline of each turn may include a combination of surfaces of the conductive thin film  300 A, the conductive pattern layer  300 B, and the upper conductive layer  300 C, unlike the above-described embodiment of  FIG. 4  in which only the surface of the upper conductive layer  300 C form an outline of each turn. For example, a region uncovered with the upper conductive layer  300 C, of both side surfaces of the conductive thin film  300 A and both side surfaces of the conductive pattern layer  300 B, may form each turn of the present embodiment together with an surface of the upper conductive layer  300 C. 
     In the present embodiment, points P 1  and P 2  may be defined as follows: P 1  is one point (a point disposed to the right, based on a direction of  FIG. 5 ) of two points formed by contacting both side surfaces of the conductive thin film  300 A of a first turn  311 - 1  with the support substrate  200 , and P 2  is a point (a point disposed to the left, based on the direction of  FIG. 5 ), facing the point P 1 , of two points formed by contacting two side surface of the conductive thin film  300 A of a second turn  311 - 2 , adjacent to the first turn  311 - 1 , with the support substrate  200 . A point P 3 , first and second virtual segments L 1  and L 2 , and lengths ‘a’ and ‘b’ of the first and second virtual segments L 1  and L 2  may be defined in the same manner as in the above-described embodiment of  FIG. 4 , and thus, descriptions thereof will be omitted. 
     In the present embodiment, the upper conductive layer may be disposed on the conductive pattern layer  300 B to cover at least a portion of the side surface of the conductive pattern layer  300 B and to expose the side surface of the conductive thin film  300 A, unlike the above-described embodiment of  FIG. 4 . As a result, in the present embodiment, an insulating layer IF may be in contact with at least a portion of the side surface of each other conductive thin film  300 A and the conductive pattern layer  300 B, unlike the above-described embodiment of  FIG. 4 . 
       FIG. 6  is a schematic enlarged view illustrating another example of portion ‘A’ of  FIG. 3 .  FIG. 7  is a schematic enlarged view illustrating another example of portion ‘A’ of  FIG. 3 . 
     Referring to  FIGS. 4 and 6 , a coil portion  300 , applied to the embodiment illustrated in  FIG. 6 , may further include a conductive surface layer  300 D, as compared with the embodiment illustrated in  FIG. 4 . Referring to  FIGS. 5 and 7 , a coil portion  300 , applied to an embodiment illustrated in  FIG. 7 , may further include a conductive surface layer  300 D, as compared with the embodiment illustrated in  FIG. 5 . Accordingly, when the embodiments illustrated in  FIGS. 6 and 7  are described, a detailed description will be provided as to only the surface conductive layers  300 D, a difference from the embodiments illustrated in  FIGS. 4 and 5 . The other elements of the elements illustrated in  FIG. 6 , other than the conductive surface layer  300 D, may be described by applying the description of the embodiment illustrated in  FIG. 4 , and the other elements of the elements illustrated in  FIG. 7 , other than the conductive surface layer  300 D, may be described by applying the description of the embodiment illustrated in  FIG. 5 , and thus, the descriptions of the other elements of  FIGS. 6 and 7  will be omitted. 
     Referring to  FIGS. 6 and 7 , each of the coil portions  300  applied to the embodiments illustrated in  FIGS. 6 and 7  may include a conductive thin film  300 A, a conductive pattern layer  300 B, and an upper conductive layer  300 C, and may further include a surface conductive layer  300 D. The surface conductive layer  300 D may be disposed on the conductive pattern layer  300 B, and may cover side surfaces of the conductive thin film  300 A and the conductive pattern layer  300 B to be in contact with a support substrate  200 . In the present embodiments, the upper conductive layer  300 C may be disposed on the surface conductive layer  300 D and may cover at least a portion of a side surface of the surface conductive layer  300 D. 
     The conductive surface layer  300 D may be formed through an electroplating process using the conductive pattern layer  300 B as a seed layer. The conductive surface layer  300 D may have an isotropic shape in which a thickness of a region, disposed on an upper surface of the conductive pattern layer  300 B, and a width of a region, disposed on a side surface of the conductive pattern layer  300 B, are substantially the same. The isotropic shape of the surface conductive layer  300 D may be implemented by performing an isotropic plating process using the conductive pattern layer  300 B as a seed layer, but the present disclosure is not limited thereto. When the surface conductive layer  300 D is formed by isotropic plating, a separation distance between conductive pattern layers  300 B of adjacent turns may be reduced using the conductive surface layer  300 B to increase the volume of the coil portion  300 . In addition, when the conductive surface layer  300 D is formed by the isotropic plating, the conductive surface layer  300 D may also be formed on a side of an upper surface of the conductive pattern layer  300 B, so that a seed structure for forming the upper conductive layer  300 C may be formed to have a relatively large height, as compared with the case in which the surface conductive layer  300 D is absent. As a result, a final coil structure formed to the upper conductive layer  300 C may have a relatively large height, as compared with the case in which the surface conductive layer  300 D is absent. The surface conductive layer  300 D may be include at least one of, for example, copper (Cu), aluminum (Al), silver (Ag), gold (Au), tin (Sn), molybdenum (Mo), nickel (Ni), titanium (Ti), and chromium (Cr). 
     In the embodiment illustrated in  FIG. 6 , the upper conductive layer  300 C may cover an entire side surface of the conductive surface layer  300 D to be in contact with the support substrate  200 . In the embodiment illustrated in  FIG. 7 , the upper conductive layer  300 C may be spaced apart from the support substrate  200  to expose at least a portion of a side surface of the conducive surface layer  300 D. 
     In the embodiment illustrated in  FIG. 6 , an outline of each turn of the coil portion  300  may include only a surface of the upper conductive layer  300 C. In the embodiment illustrated in  FIG. 7 , an outline of each turn of the coil portion  300  may include a combination of a region, uncovered with the upper conductive layer  300 C, of both side surfaces of the conductive surface layer  300 D and a surface of the upper conductive layer  300 C. 
     As described above, when a coil is formed through a plating process, a plating growth angle of a plating layer may be controlled such that the coil portion has a height of 100 μm or more. 
     While exemplary embodiments have been shown and described above, it will be apparent to those skilled in the art that modifications and variations could be made without departing from the scope of the present disclosure as defined by the appended claims.