Patent Publication Number: US-2021183558-A1

Title: Coil component

Description:
CROSS-REFERENCE TO RELATED APPLICATION(S) 
     This application claims the benefit under 35 USC 119 (a) of Korean Patent Application No. 10-2019-0165360 filed on Dec. 12, 2019 in the Korean Intellectual Property Office, the entire disclosure of which is incorporated herein by reference for all purposes. 
     TECHNICAL FIELD 
     The present disclosure relates to a coil component. 
     BACKGROUND 
     An inductor, a coil component, is a typical passive electronic component used in electronic devices, along with a resistor and a capacitor. Such a component is mounted on a mounting board such as a printed circuit board (PCB), together with other electronic components, and is then provided in an electronic device. 
     With the recent trend for the miniaturization of electronic devices, the above-mentioned mounting board has been decreased in size. However, with the improvement in performance of electronic devices, the number of electronic components to be mounted on a mounting board is increasing more and more. As a result, a distance between adjacent electronic components, mounted on the mounting board and spaced apart from each other, has been reduced. 
     An electronic component is electrically connected to the mounting board through a bonding member such as solder or the like. However, for the above-described reason, a thickness of a solder connecting the electronic component to the mounting board needs to be reduced. 
     SUMMARY 
     An aspect of the present disclosure is to provide a coil component in which a thickness of a solder fillet connected to an external electrode during mounting of the coil component is reduced to prevent electrical short-circuits between the coil component and another electronic component mounted together on a mounting board, or the like. 
     According to an aspect of the present disclosure, a coil component includes a body, a support substrate embedded in the body and having one end surface exposed to an external surface of the body, a coil portion disposed on the support substrate to be embedded in the body and having one end portion exposed to the external surface of the body together with the one end surface of the support substrate, and an external electrode disposed on the external surface of the body to be connected to the one end portion of the coil portion. Opening is formed in the external electrode to expose at least a portion of the one end 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 view of a coil component according to an example embodiment of the present disclosure. 
         FIG. 2  is a cross-sectional view taken along line I-I′ in  FIG. 1 . 
         FIG. 3  is a cross-sectional view taken along line II-II′ in  FIG. 1 . 
         FIG. 4  is a view when viewed in a direction A of  FIG. 1 . 
         FIG. 5  is a schematic view illustrating a modified example of a coil component according to an example embodiment of the present disclosure, and is a view corresponding to  FIG. 4 . 
         FIG. 6  is a schematic view of a coil component according to another example embodiment of the present disclosure. 
         FIG. 7  is a view when viewed in a direction B of  FIG. 6 . 
         FIG. 8  is a schematic view illustrating a modified example of a coil component according to another example embodiment of the present disclosure, and is a view corresponding to  FIG. 7 . 
     
    
    
     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 gravity direction. 
     The term “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 example 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. 
     Example Embodiment and Modified Example 
       FIG. 1  is a schematic view of a coil component according to an example embodiment of the present disclosure.  FIG. 2  is a cross-sectional view taken along line I-I′ in  FIG. 1 . FIG.  3  is a cross-sectional view taken along line II-II′ in  FIG. 1 .  FIG. 4  is a view when viewed in a direction A of  FIG. 1 .  FIG. 5  is a schematic view illustrating a modified example of a coil component according to an example embodiment of the present disclosure, and is a view corresponding to  FIG. 4 . 
     Referring to  FIGS. 1 to 5 , a coil component  1000  according to an example embodiment may include a body  100 , a support substrate  200 , a coil portion  300 , and external electrodes  400  and  500 , and may further include an insulating layer  600 . Openings O are formed in the external electrodes  400  and  500 . 
     The body  100  may form an appearance of the coil component  1000 , and may embed the support substrate  200  and the coil portion  300  therein. 
     As an example, the body  100  may be formed to have a hexahedral shape overall, and may have a total of six external surfaces. 
     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 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 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 . Further, hereinafter, an upper surface and a lower surface of the body  100  may refer to the fifth surface  105  and the sixth surface  106  of the body  100  determined based on directions of  FIGS. 1 to 3 , respectively. 
     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. Alternatively, the body  100  may be formed such that the coil component  1000 , including the external electrodes  400  and  500 , has a length of 2.0 mm, a width of 1.6 mm, and a thickness of 0.55 mm. Still alternatively, the body  100  may be formed such that the coil component  1000 , including the external electrodes  400  and  500 , has a length of 2.0 mm, a width of 1.2 mm, and a thickness of 0.55 mm. Alternatively, the body  100  may be formed such that the coil component  1000 , including the external electrodes  400  and  500 , has a length of 1.2 mm, a width of 1.0 mm, and a thickness of 0.55 mm. 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 not be excluded from the scope of the present disclosure. 
     The body  100  may include magnetic powder particles and an insulating resin. Specifically, the body  100  may be formed by laminating one or more magnetic composite sheets, including an insulating resin and magnetic powder particles dispersed in the insulating resin, and curing the laminated magnetic composite sheets. However, the body  100  may have a structure other than the structure in which the magnetic powder particles are dispersed in the insulating resin. For example, the body  100  may be formed of a magnetic material such as ferrite. For the above-described reason, the body  100  may be regarded as a magnetic body having magnetic properties. 
     The magnetic powder particles may be, for example, ferrite powder particles or metal magnetic powder particles. 
     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, or Li-based ferrites. 
     The metal magnetic 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 metal magnetic 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, or a Fe—Cr—Al-based alloy powder. 
     The metallic magnetic powder particle may be amorphous or crystalline. For example, the metal magnetic powder particle may be a Fe—Si—B—Cr-based amorphous alloy powder, but is not limited thereto. 
     Each of the ferrite powder particles and the metal magnetic powder particles 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 magnetic powder particles dispersed in an insulating resin. In this case, the term “different types of magnetic powder particle” means that the magnetic powder particles, dispersed in the insulating resin, are distinguished from each other by diameter, composition, crystallinity, and shape. For example, the body  100  may include two or more magnetic powder particles having different diameters to each other. 
     The insulating resin may include an epoxy, a polyimide, a liquid crystal polymer, or the like, in a single form or in combined forms, but is not limited thereto. 
     The 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 through-holes of the support substrate  200  with at least a portion of the magnetic composite sheet in processes of laminating and curing the magnetic composite sheet, but a method of forming the core  110  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 better rigidity. When the support substrate  200  is formed of an insulating material not containing glass fibers, the support substrate  200  may be advantageous in thinning the overall component. When the support substrate  200  is formed of an insulating material containing a photosensitive insulating resin, the number of processes of forming the coil portion  300  may be reduced. Therefore, it may be advantageous in reducing production costs, and a fine via may be formed. 
     The support substrate  200  may have a thickness of 10 μm or more and 40 μm or less. When the support substrate  200  has a thickness less than 10 μm, it may be difficult to secure rigidity of the support substrate  200 . Therefore, it may be difficult to support the coil portion  300  to be described later in a manufacturing process. When the support substrate  200  has a thickness greater than 40 μm, it may be disadvantageous in thinning the overall component, and it may be disadvantageous in implementing high-capacitance inductance because a volume occupied by the support substrate  200  in the body  100  of the same volume is increased. 
     One end surface of the support substrate  200  is exposed to an external surface of the body  100 . Specifically, referring to  FIGS. 1 and 2 , the support substrate  200  has one end surface  200 A exposed to the first surface  101  of the body  100 , the other end surface  200 B exposed to the second surface  102  of the body  100 , and the other surfaces embedded in the body  100  to not be exposed outwardly of the body  100 . 
     The coil portion  300  may be disposed on the support substrate  200  and may be embedded in the body  100  to exhibit characteristics of the coil component. For example, when the coil component  1000  is used as a power inductor, the coil portion  300  may serve to stabilize the power supply of an electronic device by storing an electric field as a magnetic field and maintaining an output voltage. 
     The coil portion  300  may include coil patterns  311  and  312 , and a via  320 . Specifically, based on the directions of  FIGS. 1, 2, and 3 , a first coil pattern  311  may be disposed on a lower surface of the support substrate  200  facing the sixth surface  106  of the body  100 , and a second coil pattern  312  may be disposed on an upper surface of the support substrate  200 . The via  320  may penetrate through the support substrate  200  to be in contact with each of the first coil pattern  311  and the second coil pattern  312 . In this configuration, the coil portion  300  may serve as a single coil which forms one or more turns about the core  110  overall. 
     Each of the coil patterns  311  and  312  may be in a planar spiral shape having at least one turn formed about the core  110 . As an example, based on the direction of  FIG. 2 , the first coil pattern  311  may form at least one turn about the core  110  on the lower surface of the support substrate  200 . 
     One end portion of the coil portion  300  is exposed to the external surface of the body  100  together with one end surface of the support substrate  200  to be connected to the external electrodes  400  and  500  to be described later. Specifically, a first lead-out portion  311 ′, one end portion of the coil portion  300 , is exposed to the first surface  101  of the body  100  together with one end surface  200 A of the support substrate  200  and is in contact with and connected to the first external electrode  400  disposed on the first surface  101  of the body  100 . A second lead-out portion  312 ′, the other end portion of the coil portion  300 , is exposed to the second surface  102  of the body  100  together with the other end surface  200 B of the support substrate  200 , and is in contact with and connected to the second external electrode  500  disposed on the second surface  102  of the body  100 . The first coil pattern  311  and the first lead-out portion  311 ′ may formed together in the same process with the same material and may be integrated with each other, and the second coil pattern  312  and the second lead-out portion  312 ′ may be formed together in the same process with the same material and may be integrated with each other. Hereinafter, based on the above description, unless the coil patterns  311  and  312  and the lead-out portion  311 ′ and  312 ′ should be distinguished from each other, only the coil patterns  311  and  312  will be described on the assumption that the lead-out portions  311 ′ and  312 ′ are included in the coil patterns  311  and  312 . 
     At least one of the coil patterns  311  and  312  and the via  320  may include at least one conductive layer. 
     As an example, when the second coil pattern  312  and the via  320  are formed on the other surface of the support substrate  200  by a plating process, each of the second oil pattern  312  and the via  320  may include a seed layer and an electroplating layer. Each of the seed layer and the electroplating layer may have a single-layer structure or a multilayer structure. The electroplating layer having the multilayer structure may have a conformal structure in which one electroplating layer covers the other electroplating layer, or may have a form in which the other electroplating layer is laminated on only one surface of the one electroplating layer. The seed layer of the second coil pattern  312  and the seed layer of the via  320  may be integrated with each other, and thus, there may be no boundary therebetween, but are not limited thereto. The electroplating layer of the second coil pattern  312  and the electroplating layer of the via  320  may be integrated with each other, and thus, there may no boundary therebetween, but are not limited thereto. 
     As another example, based on  FIGS. 2 and 3 , the coil portion  300  may be formed by separately forming the first coil pattern  311  disposed on a side of a lower surface of the support substrate  200  and the second coil pattern  312  disposed on aside of an upper surface of the support substrate  200  and laminating the first coil pattern  311  and the second coil pattern  312  on the support substrate  200  in a batch. In this case, the via  320  may include a high-melting-point metal layer and a low-melting-point metal layer having a melting point lower than a melting point of the high-melting-point metal layer. The low-melting-point metal layer may be formed of a metal material including lead (Pb) and/or tin (Sn). At least a portion of the low-melting-point metal layer may be melted due to pressure and temperature during the batch lamination. For this reason, an intermetallic compound layer (IMC layer) may be formed on at least a portion of a boundary between the low-melting-point metal layer and the second coil pattern  312  and a boundary between the low-melting-point metal layer and the high-melting-point metal layer. 
     For example, the coil patterns  311  and  312  may be formed to protrude from both surfaces of the support substrate  200 , as illustrated in  FIGS. 2 and 3 . As another example, the first coil pattern  311  may be formed to protrude on one surface of the support substrate  200 , and the second coil pattern  312  may be embedded in the other surface of the support substrate  200  to expose the one surface to the other surface of the support substrate  200 . In this case, a concave portion may be formed on one surface of the second coil pattern  312 , so that the other surface of the support substrate  200  and one surface of the second coil pattern  312  may not be located on the same plane. As another example, the second coil pattern  312  may be formed to protrude from the other surface of the support substrate  200 , and the first coil pattern  311  may be embedded in one surface of the support substrate  200  to expose one surface of the first coil pattern  311  to one surface of the support substrate  200 . In this case, a concave portion may be formed in one surface of the first coil pattern  312  so that one surface of the support substrate  200  and one surface of the first coil pattern  312  may not be located on the same plane. 
     Each of the coil patterns  311  and  312  and the via  320  may be formed of a conductive material such as copper (Cu), aluminum (Al), silver (Ag), tin (Sn), gold (Au), nickel (Ni), lead (Pb), titanium (Ti), molybdenum (Mo), chromium (Cr), or alloys thereof, but the conductive material is not limited thereto. 
     The external electrodes  400  and  500  may be spaced apart from each other on the external surface of the body  100  to be respectively connected to both end portions  311 ′ and  312 ′ of the coil portion  300 . Specifically, the first external electrode  400  may be disposed on the first surface  101  of the body  100  to be in contact with and connected to first lead-out portion  311 ′ of the coil portion  300  exposed to the first surface  101  of the body  100 . The second external electrode  500  may be disposed on the second surface  102  of the body  100  to be in contact with and connected to the second lead-out portion  312 ′ of the coil portion  300  exposed to the second surface  102  of the body  100 . 
     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), titanium (Ti). The external electrodes  400  and  500  may be formed of a conductive material such as tin (Sn), or alloys thereof, but the conductive material is not limited thereto. 
     An opening O is formed in each of the external electrodes  400  and  500  to expose at least a portion of each of both end surfaces  200 A and  200 B of the support substrate  200 . For example, an opening O may be formed in the first external electrode  400  to expose at least a portion of one end surface  200 A of the support substrate  200 , and an opening O may be formed in the second external electrode  500  to expose at least a portion of the other end surface  200 B of the support substrate  200 . 
     Conventionally, when a coil component is mounted on a mounting substrate, a bonding member such as a solder, or the like, is disposed between an external electrode of the coil component and a mounting pad of a mounting substrate to connect the coil component and the mounting substrate to each other. To improve the bonding reliability between the coil component and the mounting substrate, the bonding member such as a solder, or the like, is disposed to also be bonded to a region of the external electrode, including a region facing the mounting pad of the external electrode of the coil component, not facing the mounting pad (solder fillet). Due to a thickness of the solder fillet, an area actually occupied by the solder and the coil component in the mounting substrate (an effective mounting area) is increased to be larger than an area of a mounting surface of the coil component. This means that an electrical short-circuit with another component mounted together on the mounting substrate occurs, or a relatively small number of components should be mounted, relative to an area of the same mounting substrate. In this embodiment, the openings O are formed in the first and second external electrodes  400  and  500 , such that both end surfaces  200 A and  200 B of the support substrate  200  may be exposed to an external entity to significantly address the above-mentioned issue. For example, since wettability to the support substrate  200 , including a resin, is lower than wettability to the first and second external electrodes  400  and  500  including a metal, a member having low wettability (both end surfaces  200 A and  200 B of the support substrate  200 ) may be exposed to an area in which the solder is disposed (an area of the external electrodes  400  and  500  corresponding to the first and second surfaces  101  and  102  of the body  100 ) to reduce a volume and a thickness of the solder fillet bonded to the external electrodes  400  and  500 . Accordingly, in the coil component  1000 , an effective mounting area may be reduced during mounting, as compared with a conventional coil component having the same component size. As a result, in the coil component  1000 , the possibility of electrical short-circuit with another electronic component mounted together on the mounting substrate may be decreased, and a greater number of electronic components may be mounted on a mounting substrate having the same area. 
     The first and second surfaces  101  and  102  of the body  100 , to which both end surfaces  200 A and  200 B of the support substrate  200  are exposed, may have a first region, to which both end surfaces  200 A and  200 B of the support substrate  200  are exposed, and a second region, other than the first region, respectively. As an example, referring to  FIG. 4 , the second surface  102  of the body  100  may have a first region, to which the other end surface  200 B of the support substrate  200  is exposed, and a second region, other than the first region, and the second external electrode  500  may cover an entirety of the second region of the second surface  102  of the body  100 . Similarly, referring to  FIG. 2 , the first surface  101  of the body  100  may have a first region, to which the one end surface  200 A of the support substrate  200  is exposed, and a second region, other than the first region, and the first external electrode  400  may cover an entirety of the second region of the first surface  101  of the body  100 . In this case, the coil component  1000  may improve the bonding force between the body  100  and the external electrodes  400  and  500  in addition to the above-described effect of this embodiment. 
     A cross-sectional area of each of both end surfaces  200 A and  200 B of the support substrate  200  may be larger than a cross-sectional area of the opening O. For example, due to the opening O, the external electrodes  400  and  500  may be in contact with both end surfaces  200 A and  200 B of the support substrate  200  while exposing both end surfaces  200 A and  200 B of the support substrate  200  to an external entity. Thus, the external electrodes  400  and  500  may cover a portion of a region of a boundary between both end surfaces  200 A and  200 B of the support substrate  200 , exposed to the first and second surfaces  101  and  102  of the body  100 . As a result, moisture or an external substance may be significantly prevented from entering the body  100 . 
     The external electrodes  400  and  500  may be formed to have a multilayer structure. In this case, the opening O penetrates through each of a plurality of layers of the external electrodes  400  and  500  to expose both end surfaces  200 A and  200 B of the support substrate  200 . For example, the first external electrode  400  may include a first layer  10  disposed to be in contact with the first surface  101  of the body  100 , a second layer  20  disposed on the first layer  10 , and a third layer  30  disposed on the second layer  20 , and the opening O may expose the one end surface  200 A of the support substrate  200  to an external entity through all of the first to third layers  10 ,  20 , and  30 . Each of the first to third layers  10 ,  20 , and  30  may be an electrically conductive layer. The first layer  10  may include copper (Cu), the second layer  20  may include nickel (Ni), and the third layer  30  may include tin (Sn), but materials thereof are not limited thereto. Each of the first to third layers  10 ,  20 , and  30  may be formed by a plating process, but a method of forming each of the first to third layers  10 ,  20 , and  30  is not limited thereto. As another example, the first external electrode  400  may include a resin electrode, including conductive powder particles such as silver (Ag) and a resin, and a nickel/tin (Ni/Sn) plating layer formed on the resin electrode, and the opening O may expose the one end surface  200 A of the support substrate  200  to an external entity through the resin electrode and the nickel/tin (Ni/Sn) plating layer. In the above-described examples, outermost layers  30  of the external electrodes  400  and  500  are in contact both end surfaces  200 A and  200 B of the support substrate  200 . Therefore, moisture or an external substance may be significantly prevented from entering a component, as described above. 
     The insulating layer  600  may be formed on the support substrate  200  and the coil portion  300 . The insulating layer  600  may be provided to insulate the coil portion  300  from the body  100 , and may include a known insulating material such as parylene. Any insulating material may be used as the insulating material included in the insulating layer  600 , and an insulating material is not necessarily limited. The insulating layer  600  may be formed by vapor deposition, or the like, but a method of forming the insulating layer  600  is not limited thereto. The insulating layer  600  may also be formed by laminating an insulating layer on both surfaces of the support substrate  200 . In the former case, the insulating layer  600  may be formed to be conformal along surfaces of the support substrate  200  and the coil portion  300 . In the latter case, the insulating layer  600  may be formed to fill a space between adjacent turns of the coil patterns  311  and  312 . Since the insulating layer  600  is an optional component in this embodiment, the insulating layer  600  may be omitted when the body  100  may secure sufficient insulating resistance under operating conditions of the coil component  1000 . 
     Referring to  FIGS. 1 to 5 , in the case of this embodiment and a modified embodiment thereof, the coil patterns  311  and  312  are disposed to be horizontal to the sixth surface  106  of the body  100 , a mounting surface of the coil components  1000  and  1000 ′ according to this embodiment and the modified embodiment thereof. In one example, the coil patterns  311  and  312  are disposed to be substantially horizontal to the sixth surface  106  of the body  100  in consideration of a process error or margin. In this case, in the support substrate  200 , areas of both end surfaces  200 A and  200 B exposed to the first and second surfaces  101  and  102  of the body  100  may be adjusted. As an example, as illustrated in  FIG. 4 , the other end surface  200 B of the support substrate  200  exposed to the second surface  102  of the body  100  has a dimension ‘a 1 ’ in a width direction W of the body  100  and a dimension ‘b 1 ’ in a thickness direction T of the body  100 , and the dimension ‘a 1 ’ may be greater than the dimension ‘b 1 ’. As a modified example, as illustrated in  FIG. 5 , in the other end surface  200 B of the support substrate  200  exposed to the second surface  102  of the body  100 , a dimension ‘a 2 ’ in a width direction W of the body  100  may be equal to a width of the body  100 . In the former case, areas of both end surfaces  200 A and  200 B, exposed to the first and second surfaces  101  and  102  of the body  100 , may be significantly reduced to improve bonding force between the body  100  and the external electrodes  400  and  500 . In the latter case, areas of both end surfaces  200 A and  200 B, exposed to the first and second surfaces  101  and  102  of the body  100 , may be significantly increased to significantly reduce a volume and a thickness of the solder fillet. In the former case and the latter case, dimensions ‘b 1 ’ and ‘b 2 ’ of the other end surface  200 B of the support substrate  200  in the thickness direction T of the body  100  may each correspond to the above-described thicknesses of the support substrate  200 . 
     In  FIGS. 4 and 5 , the opening O is illustrated as being formed to have a shape corresponding to the shape of both end surfaces  200 A and  200 B of the support substrate  200 , but this is only illustrative. As another example, a length of the opening O in the width direction W of the body  100  may be changed to be less than a length illustrated in  FIG. 5 . 
     Another Example Embodiment and Modified Example 
       FIG. 6  is a schematic view of a coil component according to another example embodiment of the present disclosure.  FIG. 7  is a view when viewed in a direction B of  FIG. 6 .  FIG. 8  is a schematic view illustrating a modified example of a coil component according to another example embodiment of the present disclosure, and is a view corresponding to  FIG. 7 . 
     Referring to  FIGS. 1 to 8 , coil components  2000  and  2000 ′ according to this embodiment and a modified embodiment are different in directions of a support substrate  200  and a coil portion  300 , disposed in a body  100 , from the coil components  1000  and  1000 ′ according to an example embodiment and the modified embodiment. Therefore, this embodiment and the modified embodiment will be described while focusing on only the directions of the support substrate  200  and the coil portion  300  disposed in the body  100 , which are different from those of the example embodiment and the modified embodiment. The descriptions of the example embodiment and the modified embodiment may be applied, as it is, to the other components of this embodiment and the modified embodiment. 
     Referring to  FIGS. 6 to 8 , in the case of this embodiment and the modified embodiment thereof, coil patterns  311  and  312  are disposed to be perpendicular to a sixth surface  106  of the body  100 , a mounting surface of the coil components  2000  and  2000 ′ according to this embodiment and the modified embodiment thereof. In one example, the coil patterns  311  and  312  are disposed to be substantially perpendicular to the sixth surface  106  of the body  100  in consideration of a process error or margin. 
     The body  100  may be formed such that each of the coil components  2000  and  2000 ′, including external electrodes  400  and  500 , has a length of 1.0 mm, a width of 0.6 mm, and a thickness of 0.8 mm. Alternatively, the body  100  may be formed such that each of the coil components  2000  and  2000 ′, including the external electrodes  400  and  500 , has a length of 1.6 mm, a width of 0.8 mm, and a thickness of 1.0 mm. However, the ranges of this embodiment and the modified embodiment thereof are not limited to the above-described examples. When the thickness of the body  100  is greater than the width of the body  100 , the examples are regarded as being within the ranges of this embodiment and the modified embodiment thereof. In addition, when values are different from the above-mentioned values but are within the range of a process error, they are regarded as being within the scope of the present disclosure. 
     In the case of this embodiment and the modified embodiment thereof, an area of a sixth surface  106  of the body  100 , a mounting surface, may be significantly reduced. In addition, since a core  110  corresponding to a winding axis of a coil portion  300  is disposed to be horizontal to, or substantially horizontal to, the sixth surface  106  of the body  100 , the mounting surface, noise induced to a mounting substrate during mounting may be reduced. 
     In this embodiment and the modified embodiment thereof, in the support substrate  200 , areas of both end surfaces  200 A and  200 B exposed to first and second surfaces  101  and  102  of the body  100  may be adjusted. As an example, as illustrated in  FIG. 7 , the other end surface  200 B of the support substrate  200  exposed to a second surface  102  of the body  100  has a dimension ‘a 3 ’ in a width direction W of the body  100  and a dimension ‘b 3 ’ in a thickness direction T of the body  100 , and the dimension ‘a 3 ’ may be less than the dimension ‘b 3 ’. As a modified example, as illustrated in  FIG. 8 , in the other end surface  200 B of the support substrate  200  exposed to the second surface  102  of the body  100 , a dimension ‘b 4 ’ in a thickness direction T of the body  100  may be equal to a thickness of the body  100 . In the former case, areas of both end surfaces  200 A and  200 B, exposed to first and second surfaces  101  and  102  of the body  100 , may be significantly reduced to improve bonding force between the body  100  and external electrodes  400  and  500 . In the latter case, areas of both end surfaces  200 A and  200 B, exposed to the first and second surfaces  101  and  102  of the body  100 , may be significantly increased to significantly reduce a volume and a thickness of a solder fillet. In the former case and the latter case, dimensions ‘a 3 ’ and ‘a 4 ’ of the other end surface  200 B of the support substrate  200  in the width direction T of the body  100  may each correspond to the above-described thicknesses of the support substrate  200 . 
     As described above, a thickness of a solder fillet connected to an external electrode during mounting of a coil component may be reduced to prevent electrical short-circuit between the coil component and another electronic component mounted together on a mounting board, or the like. 
     While example 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.