Patent Publication Number: US-2021174996-A1

Title: Coil component

Description:
CROSS-REFERENCE TO RELATED APPLICATION(S) 
     The present application claims the benefit of priority to Korean Patent Application No. 10-2019-0163947 filed on Dec. 10, 2019 in the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference in its entirety. 
     TECHNICAL FIELD 
     The present disclosure relates to a coil component. 
     BACKGROUND 
     An inductor, a coil component, is a typical passive electronic component used in electronic devices, along with a resistor and a capacitor. 
     In general, a recognition pattern may be formed on a coil portion for the purpose of identifying a direction to be mounted on a printed circuit board or the like. 
     Meanwhile, when the coil component is inclined to and mounted on the printed circuit board, possibility of cracking due to external force in the body may increase. As the coil component is miniaturized, it is also increasingly necessary to easily recognize whether such inclination is present. 
     SUMMARY 
     An aspect of the present disclosure is to provide a coil component capable of not only identifying a direction to be mounted on a printed circuit board or the like, but also easily recognizing whether inclination is present, when mounted on the printed circuit board. 
     According to an aspect of the present disclosure, a coil component includes a body including a first surface and a second surface opposing each other, and a first side surface and a second side surface opposing each other and connecting the first surface of the body to the second surface of the body; a support substrate embedded in the body and including a first surface and a second surface opposing each other; a first coil portion and a second coil portion, respectively disposed on the first surface of the support substrate and the second surface of the support substrate to oppose each other with respect to the support substrate; and a recognition pattern disposed on the first surface of the body, wherein the recognition pattern extends from an edge region in which the first surface of the body is in contact with the first side surface of the body, toward an edge region in which the first surface of the body is in contact with the second side surface of the body. 
     According to an aspect of the present disclosure, a coil component includes a body including a first surface and a second surface opposing each other, a third surface and a fourth surface opposing each other and connecting the first surface to the second surface, and a fifth surface and a sixth surface opposing each other and connecting the first surface to the second surface; a support substrate embedded in the body and including a first surface and a second surface opposing each other; a first coil portion and a second coil portion, respectively disposed on the first surface of the support substrate and the second surface of the support substrate to oppose each other; and a plurality of recognition patterns disposed on the first surface of the body and spaced apart from one another. At least one recognition pattern, among the plurality of recognition patterns, extends from an edge region in which the first surface of the body is in contact with the third surface of the body, toward an edge region in which the first surface of the body is in contact with the fourth surface of the body. The plurality of recognition patterns are spaced apart from the fifth surface of the body by a constant distance. 
     According to an aspect of the present disclosure, a coil component includes a body including a first surface and a second surface opposing each other, and a first side surface and a second side surface opposing each other and connecting the first surface of the body to the second surface of the body; a support substrate embedded in the body and including a first surface and a second surface opposing each other; a first coil portion and a second coil portion, respectively disposed on the first surface of the support substrate and the second surface of the support substrate to oppose each other with respect to the support substrate; and a recognition pattern disposed on the first surface of the body, wherein the recognition pattern extends from a first edge, defined by the first surface and the first side surface of the body, in a direction substantially perpendicular to the first edge. 
    
    
     
       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, in which: 
         FIG. 1  is a view schematically illustrating a coil component according to a first 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 view schematically illustrating the body of the coil component of  FIG. 1 . 
         FIG. 4A  is a perspective view illustrating the body of the coil component of  FIG. 3 , viewed from a fifth surface of the body. 
         FIG. 4B  is a view illustrating the body of  FIG. 3 , viewed from a fifth surface of the body, when the coil component of  FIG. 1  is inclined to and mounted on the printed circuit board. 
         FIG. 5  is a view schematically illustrating a coil component according to a second exemplary embodiment of the present disclosure. 
         FIG. 6  is a cross-sectional view taken along line II-II′ of  FIG. 5 . 
         FIG. 7  is a view schematically illustrating the body of the coil component of  FIG. 5 . 
         FIG. 8A  is a perspective view illustrating the body of the coil component of  FIG. 7 , viewed from a fifth surface of the body. 
         FIG. 8B  is a view illustrating the body of  FIG. 7 , viewed from a fifth surface of the body, when the coil component of  FIG. 5  is inclined to and mounted on the printed circuit board. 
     
    
    
     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 X direction is a first direction or a length direction, a Y direction is a second direction or a width direction, a Z direction is a third direction or a thickness direction. 
     A value used to describe a parameter such as a 1-D dimension of an element including, but not limited to, “length,” “width,” “thickness,” “diameter,” “distance,” “gap,” and/or “size,” a 2-D dimension of an element including, but not limited to, “area” and/or “size,” a 3-D dimension of an element including, but not limited to, “volume” and/or “size”, and a property of an element including, not limited to, “roughness,” “density,” “weight,” “weight ratio,” and/or “molar ratio” may be obtained by the method(s) and/or the tool(s) described in the present disclosure. The present disclosure, however, is not limited thereto. Other methods and/or tools appreciated by one of ordinary skill in the art, even if not described in the present disclosure, may also be used. 
     As described later, when the recognition pattern  400  includes an organic material, the detector may recognize the organic material included in the recognition pattern and the metal magnetic material included in the body to be distinguished from each other. That is, the detector of this embodiment means a high-precision camera capable of recognizing differences of contrast between organic material and metal magnetic material. 
     As described later, as a result, ‘d1’, ‘d2’, ‘W’, ‘L1’, and ‘L2’ can be measured by distinguishing the boundary surfaces between the organic material and the metal magnetic material through the high-precision camera. for example, the ‘d1’, ‘d2’, ‘W’, ‘L1’, and ‘L2’ are calculated by measuring each of the maximum and minimum values of the ‘d1’, ‘d2’, ‘W’, ‘L1’, and ‘L2’ and except the median of these values. 
     Hereinafter, a coil component according to exemplary embodiments 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 maybe 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. 
     Hereinafter, a coil component  1000  according to an exemplary embodiment of the present disclosure will be described on the basis that the coil component  1000  is a thin film inductor used in a power line of a power supply circuit. However, the coil component according to an exemplary embodiment of the present disclosure may be appropriately applied as a chip bead, a chip filter, etc. in addition to the thin film inductor. 
     First Exemplary Embodiment 
       FIG. 1  is a view schematically illustrating a coil component according to a first 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 view schematically illustrating the body of the coil component of  FIG. 1 .  FIG. 4A  is a perspective view illustrating the body of the coil component of  FIG. 3 , viewed from a fifth surface of the body.  FIG. 4B  is a view illustrating the body of  FIG. 3 , viewed from a fifth surface of the body, when the coil component of  FIG. 1  is inclined to and mounted on the printed circuit board. 
     Referring to  FIGS. 1 to 4 , a coil component  1000  according to this embodiment may include a body  100 , a support substrate  200 , first and second coil portions  310  and  320 , a recognition pattern  400 , first and second lead-out portions  510  and  520 , and first and second external electrodes  610  and  620 . 
     The body  100  may form an exterior of the coil component  1000  according to this embodiment, and the support substrate  200  may be disposed therein. 
     The body  100  may be formed to have a hexahedral shape overall. 
     Referring to  FIG. 1 , the body  100  may include a first surface  101  and a second surface  102  opposing each other in a thickness direction Z, a third surface  103  and a fourth surface  104  opposing each other in a length direction X, and a fifth surface  105  and a sixth surface  106  opposing each other in a width direction Y. The third surface  103  and the fourth surface  104  of the body  100  oppose each other while connecting the first surface  101  to the second surface  102  of the body  100 . The fifth surface  105  and the sixth surface  106  of the body  100  oppose each other while connecting the first surface  101  to the second surface  102  of the body  100 . In this embodiment, one surface and the other surface of the body  100  may refer to the first surface  101  and the second surface  102 , respectively, one side surface and the other side surface of the  0 body  100  may refer to the third surface  103  and the fourth surface  104 , respectively, and one end surface and the other end surface of the body  100  may refer to the fifth surface  105  and the sixth surface  106 , respectively. 
     The body  100  may be formed such that the coil component  1000  according to this embodiment in which the external electrodes  610  and  620  to be described later are formed has a length of 2.5 mm, a width of 2.0 mm, and a thickness of 1.2 mm, a length of 2.0 mm, a width of 1.6 mm, and a thickness of 1.0 mm, a length of 2.0 mm, a width of 1.2 mm, and a thickness of 0.8 mm, or a length of 1.6 mm, a width of 0.8 mm, and a thickness of 0.8mm, but is not limited thereto. Since the above-described numerical values do not take into account errors in the process, cases in which values are different from the above-mentioned values due to the errors in the process belong to the scope of the present disclosure. 
     The body  100  may include a magnetic material and an insulating resin. Specifically, the body  100  may be formed by stacking one or more magnetic sheets including the insulating resin and the magnetic material dispersed in the insulating resin, and then curing the magnetic composite sheet. The body  100  may have a structure other than the structure in which the magnetic material may be dispersed in the insulating resin. For example, the body  100  may be made of a magnetic material such as ferrite. 
     The magnetic material may be, for example, a ferrite powder particle or a metal magnetic material. 
     Examples of the ferrite powder particle may include at least one or more of spinel type ferrites such as Mg—Zn-based ferrite, Mn—Zn-based ferrite, Mn—Mg-based ferrite, Cu—Zn-based ferrite, Mg—Mn—Sr-based ferrite, Ni—Zn-based ferrite, and the like, hexagonal ferrites such as Ba—Zn-based ferrite, Ba—Mg-based ferrite, Ba—Ni-based ferrite, Ba—Co-based ferrite, Ba—Ni—Co-based ferrite, and the like, garnet type ferrites such as Y-based ferrite, and the like, or Li-based ferrites. 
     The metal magnetic material 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), nickel (Ni), and alloys thereof. For example, the metal magnetic material may be at least one or more of a pure iron powder, a Fe—Si-based alloy powder, a Fe—Si—Al-based alloy powder, a Fe—Ni-based alloy powder, a Fe—Ni—Mo-based alloy powder, a Fe—Ni—Mo—Cu-based alloy powder, a Fe—Co-based alloy powder, a Fe—Ni—Co-based alloy powder, a Fe—Cr-based alloy powder, a Fe—Cr—Si-based alloy powder, a Fe—Si—Cu—Nb-based alloy powder, a Fe—Ni—Cr-based alloy powder, and a Fe—Cr—Al-based alloy powder. 
     The metallic magnetic material may be amorphous or crystalline. For example, the metal magnetic material may be a Fe—Si—B—Cr-based amorphous alloy powder, but is not limited thereto. 
     The ferrite powder particle and the metal magnetic material may have an average diameter of about 0.1 μm to 30 μm, respectively, but are not limited thereto. 
     The body  100  may include two or more types of magnetic materials dispersed in an insulating resin. In this case, the term “different types of magnetic materials” means that the magnetic materials dispersed in the insulating resin are distinguished from each other by diameter, composition, crystallinity, and a shape. 
     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 the first and second coil portions  310  and  320 , and a core  110  passing through the support substrate  200  to be described later. The core  110  may be formed by filling the magnetic composite sheet with through-holes of a coil portion  300  in operations of stacking and curing the magnetic composite sheet, but is not limited thereto. 
     The support substrate  200  may be embedded in the body  100 , and may include a first surface and a second surface opposing each other. 
     The support substrate  200  may be formed of an insulating material including a thermosetting insulating resin such as an epoxy resin, a thermoplastic insulating resin such as polyimide, or a photosensitive insulating resin, or may be formed of an insulating material in which a reinforcing material such as a glass fiber or an inorganic filler is impregnated with such an insulating resin. For example, the support substrate  200  may be formed of an insulating material such as prepreg, Ajinomoto Build-up Film (ABF), FR-4, a bismaleimide triazine (BT) film, a photoimageable dielectric (PID) film, and the like, but is not limited thereto. 
     As the inorganic filler, at least one or more selected from a group consisting of silica (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 ) may be used. 
     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 for reducing a thickness of the overall coil portions  310  and  320 . 
     The first and second coil portions  310  and  320  may be respectively disposed on the first surface and the second surface of the support substrate  200  to oppose each other with respect to the support substrate  200 , and may express characteristics of the coil component. For example, when the coil component  1000  of this embodiment is used as a power inductor, the first and second coil portions  310  and  320  may function 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 portions  310  and  320  applied to this embodiment may include a first coil portion  310 , a second coil portion  320 , and a via  330 . 
     The second coil portion  320 , the support substrate  200 , and the first coil portion  310  may be sequentially arranged in a stacked form in the thickness direction Z of the body  100 . 
     Each of the first coil portion  310  and the second coil portion  320  may be formed to have a planar spiral shape. For example, the first coil portion  310  may form at least one turn about an axis of the core  110  of the body  100  on the first surface of the support substrate  200  (an upper surface of the support substrate, based on  FIG. 2 ). The second coil portion  320  may form at least one turn about the axis of the core  110  of the body  100  on the second surface of the support substrate  200  (a lower surface of the support substrate, based on  FIG. 2 ). The first and second coil portions  310  and  320  may be coiled in the same direction. 
     The via  330  may pass through the support substrate  200  to electrically connect the first coil portion  310  and the second coil portion  320 , to contact the first coil portion  310  and the second coil portion  320 , respectively. As a result, the coil portion  300  applied to this embodiment may be formed in the body  100 , as a single coil generating a magnetic field, in the thickness direction Z of the body  100 . 
     At least one of the first coil portion  310 , the second coil portion  320 , and the via  330  may include at least one conductive layer. 
     For example, when the second coil portion  320  and the via  330  are formed by a plating process, the second coil portion  320  and the via  330  may include a seed layer and an electroplating layer, respectively. The seed layer may be formed by an electroless plating process or by a vapor deposition process such as a sputtering process. The electroplating layer may have a single layer structure or a multilayer structure. The electroplating layer of the multilayer structure may be formed in a conformal film structure in which one electroplating layer may be covered by the other electroplating layer, and may be only formed in a structure in which the other electroplating layer is stacked on one surface of anyone electroplating layer. The seed layer of the second coil portion  320  and the seed layer of the via  330  may be integrally formed so as not to form a boundary therebetween, but are not limited thereto. The electroplating layer of the second coil portion  320  and the electroplating layer of the via  330  may be integrally formed so as not to form a boundary therebetween, but are not limited thereto. 
     Each of the first coil portion  310  and the second coil portion  320  may have a planar spiral in which at least one turn is formed around the core portion  110 . For example, the first coil portion  310  may format least one turn about the core portion  110  on the one surface of the support substrate  200 . 
     Each of the first coil portion  310 , the second coil portion  320 , and the via  330  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), chromium (Cr), or alloys thereof, but is not limited thereto. 
     The first and second lead-out portions  510  and  520  may be exposed from the third surface  103  and the fourth surface  104  of the body  100 , respectively. In detail, the first lead-out portion  510  may be exposed from the third surface  103 , which maybe one side surface of the body  100 , and the second lead-out portion  520  may be exposed from the fourth surface  104 , which may be the other side surface of the body  100 . 
     Referring to  FIG. 2 , the one surface of the support substrate  200  may be connected to an end portion of the first coil portion  310  to form the first lead-out portion  510 , and the other surface of the support substrate  200  maybe connected to an end portion of the second coil portion  320  to form the second lead-out portion  520 . In addition, the first and second external electrodes  610  and  620  and the first and second coil portions  310  and  320  may be respectively connected to each other by the first and second lead-out portions  510  and  520  disposed in the body  100 . 
     The first and second lead-out portions  510  and  520  may include a conductive metal such as copper (Cu). When the first and second coil portions  310  and  320  are formed by a plating process, the first and second lead-out portions  510  and  520  may be formed together with the first and second coil portions  310  and  320 . 
     The recognition pattern  400  may be disposed on the first surface  101 , which may be the one surface of the body  100 . Referring to  FIG. 3 , the recognition pattern  400  may extend from an edge region in which the first surface  101  of the body  100  and the third surface  103  of the body  100  are in contact with each other, toward an edge region in which the first surface  101  of the body  100  and the fourth surface  104  of the body  100  are in contact with each other. In addition, the recognition pattern  400  may be spaced apart from the fifth surface  105  of the body  100  in a constant distance. Referring to  FIG. 3 , a distance (d 1 ) between the fifth surface  105  of the body  100  and the recognition pattern  400  and a distance (d 2 ) between the sixth surface  106  of the body  100  and the recognition pattern  400  may be respectively maintained in a constant distance. For example, since the recognition pattern  400  has a straight linear shape, the distance (d 1 ) between the fifth surface  105  and the recognition pattern  400  may be kept constant. Although not specifically illustrated, the recognition pattern  400  may be extended to an edge region in which the first surface  101  of the body  100  and the fourth surface  104  of the body  100  are in contact with each other. For example, when the coil component  1000  is formed to have a length of 1.6 mm, a width of 0.8 mm, and a thickness of 0.8 mm or less (1608 size), the recognition pattern  400  may range from the edge region in which the first surface  101  of the body  100  and the third surface  103  of the body  100  are in contact with each other, to the edge region in which the first surface  101  of the body  100  and the fourth surface  104  of the body  100  are in contact with each other (e.g., the recognition pattern  400  may extend on the entire length of the first surface  101  in the length direction X). In one exemplary embodiment, the recognition pattern  400  may extend from a first edge, defined by the first surface  101  and the third surface  103  of the body  100 , in a direction substantially perpendicular to the first edge. In other words, the recognition pattern  400  may extend in a direction substantially parallel to a side edge of the first surface  101  connecting the first edge to a second edge in opposite to the first edge on the first surface  101 . 
     Referring to  FIG. 3 , a length (L 1 ) of the recognition pattern  400  may be 1.0 mm or more and 1.6 mm or less. When the length (L 1 ) of the recognition pattern  400  is less than 1.0 mm, recognition itself by a detector (e.g., a camera) to be described later may not be smoothly performed. When the length (L 1 ) of the recognition pattern  400  is more than 1.6 mm, it may be difficult to measure whether eccentricity to be described later in the coil component  1000  of 1608 size. A line width (W) of the recognition pattern  400  may be 2.0 mm or more and 4.0 mm or less. When the line width (W) of the recognition pattern  400  is less than 2.0mm, the recognition itself by the detector to be described later may not be smoothly performed. When the line width (W) of the recognition pattern  400  is more than 4.0 mm, it may be difficult to measure whether eccentricity in the coil component  1000  of 1608 size. The numerical range of the length (L 1 ) and the line width (W), described above, may be a standard range in which the coil components  1000  of 2520 size to 1608 size series may recognize the recognition patterns  400  in the same positions, regardless of the size of the components. Therefore, the recognition pattern  400  should have a length and a line width that the detector can recognize, and should be measurable in the coil component  1000  of 1608 size. 
     All dimensions described in the specification and indicated in the drawings may be measured by a standard method that will be apparent to and understood by one of ordinary skill in the art. 
     The recognition pattern  400  may include an insulating material. Generally, the recognition pattern  400  formed in an electronic component may be formed by printing an insulating paste containing a non-magnetic substance on an outer surface of an electronic component. The insulating paste may include an insulating resin and a non-magnetic filler. Therefore, an interface may be formed between the recognition pattern  400  and the body  100  including the magnetic material. The recognition pattern  400  has a structure such that the insulating paste is additionally disposed on an outer surface of the body  100 . As a result, referring to  FIGS. 1 to 4 , the recognition pattern  400  may be formed to protrude from the first surface  101  of the body  100  to have a predetermined thickness. 
     When the coil component is mounted on a printed circuit board, the body  100  may be inclined with respect to a mounting surface. As the external electrodes  610  and  620  described later are formed on a lower surface  102  of the body  100 , the mounting surface with the printed circuit board may be formed on the lower surface  102  of the body  100 . When the lower surface  102  and the mounting surface of the body  100  are inclined to each other, there may be a problem in that the coil component  1000  and the printed circuit board are mounted in a twisted state. As a result, there may be a high possibility that a crack failure due to external force is generated in an edge portion of the body  100  adjacent to the mounting surface. Therefore, it maybe necessary to easily detect whether such failure occurs, through the recognition pattern  400  formed on an upper surface  101  of the body  100  parallel to the mounting surface.  FIG. 4A  illustrates a case in which the coil component  1000  illustrated in  FIG. 1  is normally mounted on a printed circuit board, and  FIG. 4B  illustrates a case in which the second surface  102  of the body  100  illustrated in  FIG. 4A  is eccentrically mounted on the mounting surface to have a slope angle (α) therebetween. When eccentrically mounted, the length (L 1 ) of the recognition pattern  400  formed on the first surface  101  of the body  100  may be not changed, but a length (L 2 ) of the recognition pattern  400  to be recognized by the detector disposed outside the coil component  1000  may decrease. For example, since the detector will detect the recognition pattern  400  in the normal state, when the coil component  1000  is eccentrically mounted, only the length (L 2 ) disposed in a direction, parallel to the mounting surface of the recognition pattern  400 , may be recognized. Therefore, a difference in length (L 1 -L 2 ) of the recognition pattern  400  recognized by the detector may be measured to be easily recognized whether eccentric mounting occurs. 
     Table 1 and Table 2 are tables comparing a difference in length (L 1 -L 2 ) of the recognition pattern  400  recognized by the detector according to the slope angle, when eccentric mounting occurs. As illustrated, when eccentric mounting occurs in 20 degrees, it can be seen that the difference in length (L 1 -L 2 ) of the recognition pattern  400  recognized by the detector increases. Meanwhile, the ratio of the difference in length (L 1 -L 2 ) of recognition pattern  400  recognized by detector (unit: %) is measured the same regardless of the length of the recognition pattern itself. As a result, when referring Table 1 and Table 2, it is possible to measure the eccentricity described above in both the case where the length of the recognition pattern is 1.0 mm and in the case of 1.6 mm. 
     
       
         
           
               
               
               
               
             
               
                 TABLE 1 
               
               
                   
               
               
                   
                   
                 Length (L2) 
                 Difference in 
               
               
                   
                 Length (L1) of 
                 at which 
                 Length (L1 − L2) 
               
               
                   
                 Recognition 
                 Detector 
                 of Recognition 
               
               
                   
                 Pattern formed 
                 recognizes 
                 Pattern 400 
               
               
                 Eccentric 
                 on 1 st  surface 
                 Recognition 
                 recognized by 
               
               
                 Mounting 
                 of Body 
                 Pattern 
                 Detector 
               
               
                 (°) 
                 (unit: mm) 
                 (unit: mm) 
                 (unit: %) 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
            
               
                  5° 
                 1.6 
                 1.59392 
                 0.38 
               
               
                 10° 
                 1.6 
                 1.57568 
                 1.52 
               
               
                 15° 
                 1.6 
                 1.545472 
                 3.408 
               
               
                 20° 
                 1.6 
                 1.503488 
                 6.032 
               
               
                   
               
            
           
         
       
     
     
       
         
           
               
               
               
               
             
               
                 TABLE 2 
               
               
                   
               
               
                   
                   
                 Length (L2) 
                 Difference in 
               
               
                   
                 Length (L1) of 
                 at which 
                 Length (L1 − L2) 
               
               
                   
                 Recognition 
                 Detector 
                 of Recognition 
               
               
                   
                 Pattern formed 
                 recognizes 
                 Pattern 400 
               
               
                 Eccentric 
                 on 1 st  surface 
                 Recognition 
                 recognized by 
               
               
                 Mounting 
                 of Body 
                 Pattern 
                 Detector 
               
               
                 (°) 
                 (unit: mm) 
                 (unit: mm) 
                 (unit: %) 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
            
               
                  5° 
                 1.0 
                 0.9962 
                 0.38 
               
               
                 10° 
                 1.0 
                 0.9848 
                 1.52 
               
               
                 15° 
                 1.0 
                 0.96592 
                 3.408 
               
               
                 20° 
                 1.0 
                 0.93968 
                 6.032 
               
               
                   
               
            
           
         
       
     
     For example, since the body  100  may be inclined and mounted as the difference in length (L 1 -L 2 ) of the recognition pattern  400  recognized by the detector increases, it may be detected whether the crack failure of the coil component  1000  occurs. 
     Although not illustrated in detail, an insulating film (not illustrated) may be disposed between the recognition pattern  400  and the body  100  to insulate the recognition pattern  400  from the magnetic material of the body  100 . 
     The insulating film (not illustrated) may cover the first and second coil portions  310  and  320  such that the magnetic material forming the body  100  and the first and second coil portions  310  and  320  are not directly in contact with each other. The insulating film (not illustrated) maybe formed by coating an insulating material such as parylene by a chemical vapor deposition (CVD) process, but the present disclosure is not limited thereto. In addition, the insulating film (not illustrated) may be formed by a well-known process, such as a screen printing process, an exposure process using a photoresist (PR), a process using image development, a spray coating process, or the like. 
     The first and second external electrodes  610  and  620  may cover the first and second lead-out portions  510  and  520 , respectively, and may be disposed on at least portion of the other surface  102  of the body  100 . The first and second external electrodes  610  and  620  may be formed by a vapor deposition process such as a sputtering process, a plating process, or a paste printing process. The first and second external electrodes  610  and  620  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), or alloys thereof, but are not limited thereto. The first and second external electrodes  610  and  620  may each have a single layer structure or a structure including a plurality of layers. In the latter case, each of the first and second external electrodes  610  and  620  may include a conductive resin layer containing conductive powder and a resin, a nickel plating layer containing nickel (Ni), and a tin plating layer including tin (Sn), but is not limited thereto. 
     The first and second external electrodes  610  and  620  may electrically connect the coil component  1000  to the printed circuit board or the like, when the coil component  1000  according to this embodiment is mounted on the printed circuit board. For example, the coil component  1000  according to this embodiment may be mounted, after the second surface  102  of the body  100  is disposed to face the printed circuit board. The coil component  1000  according to this embodiment may be easily connected to the printed circuit board or the like, due to a region disposed on the second surface  102  of the body  100 , among regions of the first and second external electrodes  610  and  620 . 
     Although  FIGS. 1 and 2  illustrate that the first and second external electrodes  610  and  620  applied to this embodiment are each L-shaped, these are merely illustrative. For example, in a different manner to those illustrated in  FIGS. 1 and 2 , the first and second external electrodes  610  and  620  may be configured to have five-surface or three-surface electrode, respectively, or may be configured to be spaced apart from each other only on the second surface  102  of the body  100 . 
     Second Exemplary Embodiment 
       FIG. 5  is a view schematically illustrating a coil component according to a second exemplary embodiment of the present disclosure.  FIG. 6  is a cross-sectional view taken along line II-II′ of  FIG. 5 .  FIG. 7  is a view schematically illustrating the body of the coil component of  FIG. 5 .  FIG. 8A  is a perspective view illustrating the body of the coil component of  FIG. 7 , viewed from a fifth surface of the body.  FIG. 8B  is a view illustrating the body of  FIG. 7 , viewed from a fifth surface of the body, when the coil component of  FIG. 5  is inclined to and mounted on the printed circuit board. 
     Referring to  FIGS. 5 and 6 , a plurality of recognition patterns  410  and  420  may be spaced apart from each other on a first surface  101  of a body  100 , compared to the coil component  1000  according to the first exemplary embodiment of the present disclosure. Therefore, only the plurality of recognition patterns  410  and  420  different from the first exemplary embodiment will be described in describing this embodiment. The remaining configuration of this embodiment may be applied as it is in the first exemplary embodiment of the present disclosure. 
     A coil component  2000  according to this embodiment may include the plurality of recognition patterns  410  and  420  formed on the first surface  101  of the body  100  to be spaced apart from each other. Referring to  FIG. 7 , at least one of the plurality of recognition patterns  410  and  420  may extend from an edge region in which the first surface  101  of the body  100  and a third surface  103  of the body  100  are in contact with each other, toward an edge region in which the first surface  101  of the body  100  and a fourth surface  104  of the body  100  are in contact with each other. Since each of the plurality of recognition patterns  410  and  420  may have a straight linear shape, a distance (d 1 ) between the fifth surface  105  of the body  100  and the plurality of recognition patterns  410  and  420  or a distance (d 2 ) between the sixth surface  106  of the body  100  and the plurality of recognition patterns  410  and  420  may be maintained in a constant distance. 
     It is intended that the present disclosure is not limited by the foregoing embodiments and the accompanying drawings, but rather by the claims appended hereto. 
     According to a coil component of exemplary embodiments of the present disclosure, a direction to be mounted on a printed circuit board and whether inclination is present, when mounted on the printed circuit board, may be recognized at the same time. 
     While embodiments have been illustrated 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.