Patent Publication Number: US-11640866-B2

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. 10-2019-0025073 filed on Mar. 5, 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 
     Inductors and other coil components are representative passive electronic components used in electronics along with resistors and capacitors. 
     Coil components may be provided with marking parts for the purpose of direction identification, or the like, printed on circuit boards or the like. In general, marking parts are formed by printing a paste material containing a nonmagnetic substance on surfaces of components. 
     As the size of coil components is reduced, the influence of marking parts on magnetic characteristics of coil components is further increased. 
     SUMMARY 
     An aspect of the present disclosure is to provide a coil component which is easy to identify while an identification portion has a relatively reduced thickness. 
     An aspect of the present disclosure is to provide a coil component capable of having a reduced volume of a nonmagnetic body, in the same volume as that of the related art. 
     According to an aspect of the present disclosure, a coil component includes a body, a coil portion embedded in the body, first and second external electrodes spaced apart from each other on an external surface of the body and connected to the coil portion, and an identification portion in which a plurality of fine patterns spaced apart from one another are grouped and which is disposed on the external surface of the body. Each of the plurality of fine patterns includes an insulating resin. 
    
    
     
       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 perspective view schematically illustrating a coil component according to an embodiment; 
         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   ; 
         FIGS.  4  to  7    are enlarged views of portion A in  FIG.  1   , and illustrate an identification portion as an example; and 
         FIG.  8    is a perspective view schematically illustrating a coil component according to another embodiment. 
     
    
    
     DETAILED DESCRIPTION 
     The following detailed description is provided to assist the reader in gaining a comprehensive understanding of the methods, apparatuses, and/or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatuses, and/or systems described herein will be apparent to one of ordinary skill in the art. The sequences of operations described herein are merely examples, and are not limited to those set forth herein, but may be changed, as will be apparent to one of ordinary skill in the art, with the exception of operations necessarily occurring in a certain order. Also, descriptions of functions and constructions that would be well known to one of ordinary skill in the art may be omitted for increased clarity and conciseness. 
     The terminology used herein describes particular embodiments only, and the present disclosure is not limited thereby. As used herein, the singular forms “a,” “an,” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “including”, “comprises,” and/or “comprising” when used in this specification, specify the presence of stated features, integers, steps, operations, members, elements, and/or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, members, elements, and/or groups thereof. 
     Throughout the specification, it will be understood that when an element, such as a layer, region or wafer (substrate), is referred to as being “on,” “connected to,” or “coupled to” another element, it may be directly “on,” “connected to,” or “coupled to” the other element or other elements intervening therebetween may be present. In contrast, when an element is referred to as being “directly on,” “directly connected to,” or “directly coupled to” another element, there may be no elements or layers intervening therebetween. Like numerals refer to like elements throughout. As used herein, the term “and/or” includes any and all combinations of one or more of the associated listed items. 
     In addition, the term “coupled” is used not only in the case of direct physical contact between the respective constituent elements in the contact relation between the constituent elements, but also in the case in which other constituent elements are interposed between the constituent elements such that they are in respective contact with each other, being used as a comprehensive concept. 
     The drawings may not be to scale, and the relative size, proportions, and depiction of elements in the drawings may be exaggerated for clarity, illustration, and convenience. 
     In the drawing, the L direction may be defined as a first direction or a length direction, the W direction as a second direction or a width direction, and the T direction as a third direction or a thickness direction. 
     Hereinafter, a coil component according to an embodiment in the present disclosure will be described in detail with reference to the accompanying drawings. Referring to the accompanying drawings, the same or corresponding components are denoted by the same reference numerals, and redundant descriptions thereof will be omitted. 
     Various types of electronic components are used in electronic devices. Various types of coil components may be suitably used for noise removal or the like between these electronic components. 
     For example, as a coil component in an electronic device, a power inductor, a high frequency inductor (HF Inductor), a general bead, a bead for high frequency (GHz Bead), a common mode filter, or the liken used. 
     Embodiment 
       FIG.  1    is a perspective view schematically illustrating a coil component according to an embodiment.  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   .  FIGS.  4  to  7    are enlarged views of portion A in  FIG.  1    and illustrate an identification portion by way of example. 
     Referring to  FIGS.  1  to  7   , a coil component  1000  according to an embodiment may include a body  100 , a coil portion  200 , first and second external electrodes  300  and  400 , and an identification portion  500 , and may further include an internal insulating layer IL and an insulating film IF. 
     The body  100  forms the shape of the coil component  1000  according to the embodiment. The body  100  may be formed to have a hexahedral shape as a whole. 
     Hereinafter, an embodiment in the present disclosure will be described with reference to a case in which the body  100  has a hexahedral shape by way of example. However, these descriptions do not exclude coil components that include bodies formed in shapes other than hexahedral, within the scope of the present disclosure. 
     Referring to  FIGS.  2  and  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 in a thickness direction T. Each of the first to fourth surfaces  101 ,  102 ,  103  and  104  of the body  100  corresponds to a wall surface of the body  100 , connecting the fifth surface  105  and the sixth surface  106  of the body  100  to each other. In the following description, both ends of the body  100  among a plurality of wall surfaces thereof refer to the first surface  101  and the second surface  102  of the body  100 , and both opposing side surfaces of the body  100  among the plurality of wall surfaces thereof may refer to the third surface  103  and the fourth surface  104  of the body  100 . 
     The body  100  may be formed, in such a manner that, the coil component  1000  according to an embodiment, including external electrodes  300  and  400 , a first insulating layer  510  and a second insulating layer  520 , to be described later, may be formed to have specified dimensions such as, for example, a length of about 2.0 mm, a width of about 1.2 mm, and a thickness of about 0.65 mm. It will be appreciated that the the particular dimensions of the body  1000  are not limited, and therefore, a body with dimensions other than those explicitly described herein is within the scope of the present disclosure. As used herein, about refers to values different from the actual value of a dimension (or other quantity) resulting from process errors. 
     The body  100  may include a magnetic material and a resin. In detail, the body  100  may be formed by laminating one or more magnetic composite sheets including a resin and a magnetic material dispersed in the resin. In addition, the body  100  may also have a structure in addition to the structure in which the magnetic material is dispersed in the resin. For example, the body  100  may be formed of a magnetic material such as ferrite. 
     The magnetic material may be ferrite or a metal magnetic powder. 
     Ferrite powder may be one or more of spinel type ferrite such as Mg—Zn type, Mn—Zn type, Mn—Mg type, Cu—Zn type, Mg—Mn—Sr type, Ni—Zn type or the like, hexagonal ferrite such as Ba—Zn, Ba—Mg, Ba—Ni, Ba—Co, Ba—Ni—Co type, or the like, garnet type ferrite such as Y type or the like, and Li-based ferrite. 
     The metal magnetic powder 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 may be at least one or more selected from the group consisting of pure iron powder, Fe—Si alloy powder, Fe—Si—Al alloy powder, Fe—Ni alloy powder, Fe—Ni—Mo alloy powder, Fe—Ni—Mo—Cu alloy powder, Fe—Co alloy powder, Fe—Ni—Co alloy powder, Fe—Cr alloy powder, Fe—Cr—Si alloy powder, Fe—Si—Cu—Nb alloy powder, Fe—Ni—Cr alloy powder, and Fe—Cr—Al alloy powder. 
     The metal magnetic powder may be amorphous or crystalline. For example, the metal magnetic powder may be a Fe—Si—B—Cr amorphous alloy powder, but is not limited thereto. 
     The ferrite and the metal magnetic powder may have an average diameter of, e.g., about 0.1 μm to about 30 μm, respectively, but embodiments thereof are not limited thereto. 
     The body  100  may include two or more kinds of magnetic materials dispersed in a resin. In this case, the term “different kinds of magnetic materials” means that the magnetic materials dispersed in the resin are distinguished from each other by at least one of an average diameter, a composition, crystallinity and a shape. 
     The resin may include, but is not limited to, epoxy, polyimide, liquid crystal polymer, or the like, alone or in combination. 
     The body  100  includes the coil portion  200  and a core  110  passing through an internal insulating layer IL, to be described later. The core  110  may be formed by filling a through hole of the coil portion  200  with a magnetic composite sheet, but an embodiment thereof is not limited thereto. 
     The coil portion  200  is embedded in the body  100  to exhibit characteristics of a coil component. For example, when the coil component  1000  according to the embodiment is used as a power inductor, the coil portion  200  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. Both ends of the coil portion  200  may be exposed to the first and second surfaces  101  and  102  of the body  100 , respectively. 
     The coil portion  200  applied to this embodiment includes a first coil pattern  211 , a second coil pattern  212 , and a via  220 . 
     The first coil pattern  211 , the internal insulating layer IL and the second coil pattern  212  to be described later may be sequentially laminated in a thickness direction T of the body  100 . 
     Each of the first coil pattern  211  and the second coil pattern  212  may be formed to have a flat spiral shape. As an example, the first coil pattern  211  may include at least one turn about the core  110  of the body  100  on one surface of the internal insulating layer IL (a lower surface of IL in  FIG.  2   ). The second coil pattern  212  may include at least one turn about the core  110  of the body  100  on the other surface of the internal insulating layer IL (an upper surface of IL in  FIG.  2   ). The first and second coil patterns  211  and  212  may be wound in the same direction. 
     The via  220  penetrates through the internal insulating layer IL to electrically connect the first coil pattern  211  and the second coil pattern  212  to each other, to respectively be in contact with the first coil pattern  211  and the second coil pattern  212 . As a result, the coil portion  200  according to the embodiment may be formed as a single coil that generates a magnetic field in the thickness direction T of the body  100  in the body  100 . 
     At least one of the first coil pattern  211 , the second coil pattern  212 , and the via  220  may include at least one conductive layer. 
     As an example, in the case in which the second coil pattern  212  and the vias  220  are formed by a plating method, the second coil pattern  212  and the via  220  may each include a seed layer and an electroplating layer. The seed layer may be formed by an electroless plating method or a vapor deposition method such as sputtering or the like. The electroplating layer may have a single-layer structure or a multi-layer structure. The electroplating layer of the multi-layer structure may be formed to have a conformal film structure in which one electroplating layer is covered by another electroplating layer, and may also be formed to have a form in which only on one surface of one electroplating layer, another electroplating layer is laminated. A seed layer of the second coil pattern  212  and a seed layer of the via  220  may be integrally formed without forming a boundary therebetween, but an embodiment thereof is not limited thereto. The electroplated layer of the second coil pattern  212  and the electroplated layer of the via  220  may be integrally formed without forming a boundary therebetween, but an embodiment thereof is not limited thereto. 
     As another example, in a case in which the first coil pattern  211  and the second coil pattern  212  are separately formed and then laminated together on the internal insulating layer IL to form the coil portion  200 , the via  220  may include a high melting point metal layer and a low melting point metal layer having a melting point lower than that of the high melting point metal layer. In this case, the low melting point metal layer may be formed of a solder containing lead (Pb) and/or tin (Sn). The low melting point metal layer is at least partially melted due to pressure and temperature at the time of lamination, in such a manner that an intermetallic compound layer (IMC layer) may be formed in at least one of gaps between the low melting point metal layer and the first coil pattern  211 , between the low melting point metal layer and the second coil pattern  212 , and the high melting point metal layer and the low melting point metal layer. 
     In an example referring to  FIG.  2   , the first coil pattern  211  and the second coil pattern  212  may protrude from a lower surface and an upper surface of the internal insulating layer IL, respectively. In another example with reference to  FIG.  2   , the first coil pattern  211  may be embedded in the lower surface of the internal insulating layer IL in such a manner that a lower surface thereof is exposed to the lower surface of the internal insulating layer IL, and the second coil pattern  212  may be exposed to an upper surface of the internal insulating layer IL. In this case, a concave portion is formed in the lower surface of the first coil pattern  211 , such that the lower surface of the internal insulating layer IL and the lower surface of the first coil pattern  211  may not be located on the same plane. As another examples with reference to  FIG.  2   , the first coil pattern  211  may be embedded in the lower surface of the internal insulating layer IL in such a manner that the lower surface thereof is exposed to the lower surface of the internal insulating layer IL, and the second coil pattern  212  may be embedded in the upper surface of the internal insulating layer IL in such a manner that an upper surface thereof may be exposed to the upper surface of the internal insulating layer IL. 
     Ends of the first coil pattern  211  and the second coil pattern  212  may be exposed to the first and second surfaces  101  and  102  of the body  100 , respectively, to form first and second connecting portions  211 C and  212 C. An end of the first coil pattern  211  exposed to the first surface  101  of the body  100 , i.e., the first connecting portion  211 C, contacts a first external electrode  300  to be described later, to be electrically connected to the first external electrode  300 . An end of the second coil pattern  212  exposed to the second surface  102  of the body  100 , i.e., the second connecting portion  212 C, contacts a second external electrode  400  to be described later, to be electrically connected to the second external electrode  400 . 
     The first coil pattern  211 , the second coil pattern  212  and the vias  220  may respectively be formed of a conductive material, such as copper (Cu), aluminum (Al), silver (Ag), tin (Sn), gold (Au), nickel (Ni), lead (Pb), titanium (Ti), alloys thereof, or the like, but a material thereof is not limited thereto. 
     The first and second coil patterns  211  and  212  are formed on both surfaces of the internal insulating layer IL, respectively. For example, the internal insulating layer IL supports the first and second coil patterns  211  and  212 . 
     The internal insulating layer IL 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 photoimageable dielectric resin, or an insulating material in which a reinforcing material such as glass fiber or inorganic filler is impregnated with these insulating resins. For example, the internal insulating layer IL may be formed of an insulating material such as a prepreg, an Ajinomoto Build-up Film (ABF), an FR-4, a Bismaleimide Triazine (BT) resin, or photoimageable dielectric (PID), but an embodiment thereof is not limited thereto. 
     The inorganic filler may be one or more selected from the group consisting of silica (SiO 2 ), alumina (Al 2 O 3 ), silicon carbide (SiC), barium sulphate (BaSO 4 ), talc, mud, mica powder, aluminum hydroxide (AlOH 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 ). 
     In the case in which the internal insulating layer IL is formed of an insulating material including a reinforcing material, the internal insulating layer IL may provide relatively better rigidity. In the case in which the internal insulating layer IL is formed of an insulating material not containing a glass fiber, the internal insulating layer IL may be advantageous in terms of thinning an overall thickness of the coil component  1000  according to the embodiment. In the case in which the internal insulating layer IL is formed of an insulating material containing a photoimageable dielectric resin, the number of processes is reduced, which may be advantageous in terms of reducing the production cost and fine hole processing. 
     The first and second external electrodes  300  and  400  are spaced apart from each other on the sixth surface  106  of the body  100 , and are respectively connected to the coil portion  200 . The first external electrode  300  includes a first connection portion  310  disposed on the first surface  101  of the body  100  and connected to the first connecting portion  211 C, and a first extension  320  extending from the first connection portion  310  onto the sixth surface  106  of the body  100 . The second external electrode  400  includes a second connection portion  410  disposed on the second surface  102  of the body  100  and connected to the second connecting portion  212 C, and a second extension  420  extending from the second connection portion  410  onto the sixth surface  106  of the body  100 . The first extension  310  and the second extension  410  disposed on the sixth surface  106  of the body  100  are spaced apart from each other to prevent a short between the first external electrode  300  and the second external electrode  400 . 
     The first and second external electrodes  300  and  400  may be formed by a vapor deposition method such as sputtering or the like, a plating method, or a paste printing method. In forming the first and second external electrodes  300  and  400 , the first and second connection portions  310  and  410  and the extensions  320  and  420  may be formed by separate processes, and a boundary between the first and second connection portions  310  and  410  and the extensions  320  and  420  may be formed. Alternatively, the first and second connection portions  310  and  410  and the extensions  320  and  420  may be formed in the same process, to be integrally formed without forming a boundary therebetween. 
     The first and second external electrodes  300  and  400  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), alloys thereof, or the like, but a material thereof is not limited thereto. Each of the first and second external electrodes  300  and  400  may have a single layer structure or a structure including a plurality of layers. In the case of the structure having a plurality of layers, the first and second external electrodes  300  and  400  may each include a conductive resin layer including a conductive powder and a resin, a nickel plating layer including nickel (Ni), and a tin plating layer including tin (Sn), but an embodiment thereof is not limited thereto. 
     The first and second external electrodes  300  and  400  electrically connect the coil component  1000  to a printed circuit board or the like when the coil component  1000  according to an embodiment is mounted on the printed circuit board or the like. As an example, the coil component  1000  according to the embodiment may be mounted after the sixth surface  106  of the body  100  is disposed to face the printed circuit board. Therefore, the coil component  1000  according to the embodiment may be easily connected to a printed circuit board or the like due to the first and second extensions  320  and  420  together disposed on the sixth surface  106  of the body  100 . 
     On the other hand,  FIGS.  1  to  3    illustrate that the first and second external electrodes  300  and  400  applied to the embodiment are L-shaped, respectively, but are merely illustrative. For example, the first and second external electrodes  300  and  400  may be respectively formed in the form of a fifth surface electrode or a third surfaces electrode, or may be formed only on the sixth surface  106  of the body  100  to be spaced apart from other thereon. 
     The identification portion  500  is a group of a plurality of fine patterns P 1  and P 2  spaced apart from each other and is disposed on an outer surface of the body  100 . The identification portion  500  may be formed to specify a surface of formation of the first and second external electrodes  300  and  400 , from among outer surfaces of the body  100 , or to specify a mounting surface of the coil component  1000  when the coil component  1000  according to the embodiment is mounted on a printed circuit board. The plurality of fine patterns P 1  and P 2  constituting the group may include an insulating resin. 
     Generally, a marking part formed on an electronic component is formed by printing an insulating paste containing a nonmagnetic substance on an outer surface of the electronic component. The insulating paste may include an insulating resin and a nonmagnetic filler. Such a marking part is generally formed integrally on an entire outer surface of the electronic component to occupy the entire region of formation of the marking part. As an example, in a case in which a marking part is formed in a region having the area of 400 μm×400 μm in the outer surface of the electronic component, the marking part is integrally formed in the region, and has the same area as the area of the region on the outer surface of the body  100 . However, in a case in which the insulating paste is printed on the entirety of the region on the outer surface of the body  100 , the marking part is inevitably formed relatively thick due to characteristics of the insulating paste. In this case, as the size of the electronic component is reduced, the volume of the marking part relative to the volume of the entire component is inevitably relatively increased, affecting characteristics of the electronic component. 
     In consideration of such characteristic, in an embodiment of the present disclosure, when the identification portion  500  is formed by printing on a portion of the outer surface of the body  100 , the identification portion  500  is not formed integrally, but is formed in such a manner that a plurality of fine patterns P 1  and P 2  are clustered. The plurality of fine patterns P 1  and P 2  spaced apart from each other are respectively formed relatively smaller than a marking part of the related art, such that a thickness thereof may be relatively reduced. Therefore, the identification portion  500  according to an embodiment in the present disclosure, in which the plurality of fine patterns P 1  and P 2  are grouped, has the same occupancy area as that in the related art, on the outer surface of the body  100 , and has a relatively reduced thickness, as compared with that of the related art marking part. As a result, the identification portion  500  according to an embodiment may perform the same function as that of the related art marking part, while preventing degradation of characteristics of components. 
     Referring to  FIGS.  4  to  7   , the identification portion  500  may include first and second fine patterns P 1  and P 2  having a circular or polygonal cross-sectional shape. In addition, the identification portion  500  may include at least two fine patterns P 1  and P 2  having different cross-sectional shapes. As an example, referring to  FIG.  4   , the identification portion  500  may include a first fine pattern P 1  having a hexagonal cross sectional shape, and a second fine pattern P 2  disposed outside of the first fine pattern P 1  and having a shape allowing for the identification portion  500  to have a quadrangular shape as a whole of the identification portion  500 . 
     As another example, as illustrated in  FIG.  5   , the identification portion  500  may include a first fine pattern P 1  having a circular cross-sectional shape, and a second fine pattern P 2  disposed outside of the first fine pattern P 1  and having a shape allowing for the identification portion  500  to have a quadrangular shape as a whole of the identification portion  500 . 
     As yet another example, as illustrated in  FIG.  6   , the identification portion  500  includes a first fine pattern P 1  having a quadrangular cross-sectional shape having a rounded corner, and a second fine pattern P 2  disposed outside of the first fine pattern P 1  and having a shape allowing for the identification portion  500  to have a quadrangular shape as a whole of the identification portion  500 . 
     As a further example, as illustrated in  FIG.  7   , the identification portion  500  also include a first fine pattern P 1  having a quadrangular cross-sectional shape having a rounded corner, and a second fine pattern P 2  disposed outside of the first fine pattern P 1  and having a shape allowing for the identification portion  500  to have a quadrangular shape as a whole of the identification portion  500 . 
     As illustrated in  FIGS.  6  and  7   , the first fine pattern P 1  may be disposed to form a plurality of rows. In this case, as illustrated in  FIG.  6   , a center  520  of a first fine pattern P 1  which is one of plurality of entries of [ohk1] a first row, and a center  525  of another first fine pattern P 1  which is one of plurality of entries of a second row, may be located together on a virtual line segment  530  perpendicular to the first and second rows. In addition, as illustrated in  FIG.  7   , a center  520 ′ of a first fine pattern P 1  which is one of plurality of entries of the first row, and a center  525 ′ of another first fine pattern P 1  which is one of plurality of entries of the second row, may not be located together on a virtual line segment perpendicular to the first and second rows. On the other hand, although  FIGS.  1  and  4  to  7    illustrate that the outline of the identification portion  500  is formed to have a quadrangle as a whole, which is merely an example, for example, the identification portion  500  may be modified to have various shapes such as a polygon, a circle, an elliptical shape, or the like, in addition to a quadrangular shape as an overall outer appearance. In addition, as illustrated in  FIGS.  4  to  7   , the second fine pattern P 2  may include two or more fine patterns of which cross-sectional shapes are different from each other. 
     A width d of the plurality of fine patterns P 1  and P 2  may be about 50 μm or more. If the width d of the plurality of fine patterns P 1  and P 2  is less than about 50 μm, a portion of the plurality of fine patterns P 1  and P 2  may not be printed reproducibly and it may be difficult to identify the identification portion  500  with an identification device. On the other hand, since the shape of cross sections of the plurality of fine patterns P 1  and P 2  is not limited, the width d of the plurality of fine patterns P 1  and P 2  refers to a diameter when the shape of the cross section is circular, and refers to a distance between two sides facing each other, when the shape of the cross section is a polygon having two sides facing each other in parallel. 
     A thickness of the plurality of fine patterns P 1  and P 2  may be about 4.5 μm or more. If the thickness of the plurality of fine patterns P 1  and P 2  is less than about 4.5 μm, a portion of the plurality of fine patterns P 1  and P 2  may not be reproducibly printed and it may be difficult to identify the identification portion  500  by the identification device. 
     A spacing distance s between the plurality of fine patterns P 1  and P 2  may be from about 10 μm to about 30 μm or less. If the spacing distance s between the plurality of fine patterns P 1  and P 2  is less than about 10 μm, adjacent fine patterns P 1  and P 2  may be connected to each other to increase the thickness of the identification portion  500 . If the spacing distance s between the plurality of fine patterns P 1  and P 2  is more than about 30 μm, an error may occur when the identification portion  500  is identified by the identification device. 
     The insulating film IF may be formed along the surfaces of the first coil pattern  211 , the internal insulating layer IL, and the second coil pattern  212 . The insulating film IF protects and insulates the respective coil patterns  211  and  212 , and includes a known insulating material such as parylene. Any insulating material included in the insulating film IF may be used without particular limitations. The insulating film IF may be formed by vapor deposition or the like, but an embodiment thereof is not limited thereto. For example, the insulating film IF may be formed by forming an insulating material such as an insulating film on both surfaces of the internal insulating layer IL on which the first and second coil patterns  211  and  212  are formed. The above-described insulating film IF may be omitted in this embodiment depending on design requirements or the like. 
     Although not illustrated in the drawings, at least one of the first coil pattern  211  and the second coil pattern  212  may be formed of a plurality of layers. As an example, the coil portion  200  may have a structure in which a plurality of first coil patterns  211  are formed, in detail, one of the first coil patterns is laminated on another first coil pattern. In this case, an additional insulating layer may be disposed between the plurality of first coil patterns  211 , and a connecting via may be formed in the additional insulating layer to penetrate therethrough, to connect the adjacent first coil patterns to each other. 
     Further Embodiment 
       FIG.  8    is a perspective view schematically illustrating a coil component according to another embodiment in the present disclosure. 
     Referring to  FIGS.  1  to  8   , a coil component  2000  according to another embodiment further includes insulating layers  610 ,  620  and  630  as compared with those of the coil component  1000  according to the foregoing embodiment. Therefore, only the insulating layers  610 ,  620  and  630  will be described in the description according to the embodiment. For the remaining configurations according to the embodiment, the above description of the foregoing embodiment may be applied as it is thereto. 
     Referring to  FIG.  8   , the insulating layers  610 ,  620  and  630  surround a body  100 , and openings corresponding to first and second external electrodes  300  and  400  are formed. In the case of this embodiment, an identification portion  500  is disposed on the insulating layers  610 ,  620  and  630 . 
     The insulating layers  610 ,  620  and  630  may be, for example, a first insulating layer  610 , a second insulating layer  620  and a third insulating layer  630 , respectively. In detail, the first insulating layer  610  is disposed on the fifth surface  105  of the body  100  to cover the fifth surface  105  of the body  100 . The second insulating layer  620  is disposed on the sixth surface  106  of the body  100 . The third insulating layer  630  may be disposed on the first to fourth surfaces  101 ,  102 ,  103  and  104  of the body  100 . 
     The coil component  2000  according to the embodiment may be manufactured by manufacturing a coil substrate in which a plurality of bodies are connected to each other, and by dicing the coil substrate to separate a plurality of bodies, and then by forming external electrodes  300  and  400  on an outer surface of each body. In this case, the first and second insulating layers  610  and  620  may be disposed on both surfaces of the coil substrate before dicing the coil substrate. Asa result, in the case of each body after the dicing process, the sides of the first and second insulating layers  610  and  620  and the first to fourth surfaces  101 ,  102 ,  103  and  104  of the body  100  may be disposed on substantially the same plane. 
     The third insulating layer  630  may be formed on exposed first to fourth surfaces of each body after the dicing process described above. In this case, openings having the form corresponding to the first and second connection portions  310  and  410  of the external electrodes  300  and  400 , while exposing both ends of the coil portion  200 , may be formed in the third insulating layer  630  disposed on the first and second surfaces  101  and  102  of the body  100 . 
     The first to third insulating layers  610 ,  620  and  630  may be respectively formed by laminating an insulating film on the outer surface of the body  100  or by applying an insulating paste to the outer surface of the body  100 . 
     The first to third insulating layers  610 ,  620  and  630  may include a thermoplastic resin such as a polystyrene type, a vinyl acetate type, a polyester type, a polyethylene type, a polypropylene type, a polyamide type, a rubber, acrylic resin or the like, a thermosetting resin such as phenol-based, epoxy-based, urethane-based, melamine-based, alkyd-base resin or the like, a photoimageable resin, or a parylene. 
     The first to third insulating layers  610 ,  620  and  630  may further include a filler dispersed in the above-described insulating resin. The filler may be an inorganic filler or an organic filler, a powder phase of an insulating resin. As the inorganic filler, one or more selected from the group consisting of silica (SiO 2 ), alumina (Al 2 O 3 ), silicon carbide (SiC), barium sulphate (BaSO 4 ), talc, mud, mica powder, aluminum hydroxide (AlOH 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 ). 
     On the other hand, in forming the external electrodes  300  and  400  on the surface of the body  100  by the plating process, the first to third insulating layers  610 ,  620  and  630  may be used as a plating resist. 
     As set forth above, according to an embodiment, an identification portion may be formed to have a relatively thin thickness, while being easily identified. 
     According to an embodiment, the volume of a nonmagnetic body may be reduced, in the same volume of a coil component as that in the related art. 
     While this disclosure includes specific examples, it will be apparent to one of ordinary skill in the art that various changes in form and details may be made in these examples without departing from the spirit and scope of the claims and their equivalents. The examples described herein are to be considered in a descriptive sense only, and not for purposes of limitation. Descriptions of features or aspects in each example are to be considered as being applicable to similar features or aspects in other examples. Suitable results may be achieved if the described techniques are performed to have a different order, and/or if components in a described system, architecture, device, or circuit are combined in a different manner, and/or replaced or supplemented by other components or their equivalents. Therefore, the scope of the disclosure is defined not by the detailed description, but by the claims and their equivalents, and all variations within the scope of the claims and their equivalents are to be construed as being included in the disclosure.