Patent Publication Number: US-2020279687-A1

Title: Coil component

Description:
CROSS-REFERENCE TO RELATED APPLICATION(S) 
     This application claims benefit of priority to Korean Patent Application No. 10-2019-0023544 filed on Feb. 28, 2019 in the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference in its entirety. 
     BACKGROUND 
     The present disclosure relates to a coil component. 
     An inductor, a coil component, is a representative passive electronic component used together with a resistor and a capacitor in electronic devices. 
     In a case of a coil component in which a value of a length of a body is similar to a value of a width, it may be difficult to specify the surface to which a lead-out portion of a coil portion is exposed, and as a result, it may be difficult to specify the surface on which an external electrode is to be disposed. 
     SUMMARY 
     An aspect of the present disclosure is to provide a coil component which may be easily manufactured. 
     According to an aspect of the present disclosure, a coil component includes a body having one surface and another surface opposing each other, and a plurality of walls each connecting the one surface to the other surface, an internal insulating layer disposed in the body, and a coil portion disposed on the internal insulating layer. The coil portion includes first and second coil patterns disposed on opposing surfaces of the internal insulating layer, respectively, a first main lead-out portion and a first auxiliary lead-out portion extending from the first coil pattern and respectively exposed to a front surface and one side surface of the body connected to each other among the plurality of walls of the body, and a second main lead-out portion and a second auxiliary lead-out portion extending from the second coil pattern and respectively exposed to a rear surface and another side surface of the body connected to each other among the plurality of walls of the body. 
     According to another aspect of the present disclosure, a coil component includes a body and a coil disposed in the body and including at least one coil winding between opposing first and second ends thereof. The first end of the coil includes a first main lead-out portion and a first auxiliary lead-out portion exposed to different respective surfaces of the body at locations spaced apart from each other. 
    
    
     
       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 schematic perspective diagram illustrating a coil component according to an example embodiment of the present disclosure; 
         FIG. 2  is a cross-sectional diagram taken along line I-I′ in  FIG. 1 ; 
         FIG. 3  is a cross-sectional diagram taken along line II-II′ in  FIG. 1 ; 
         FIGS. 4 and 5  are diagrams illustrating a position in which an external electrode may be formed, viewed from above; and 
         FIG. 6  is a schematic perspective diagram illustrating a coil component according to another example embodiment of the present disclosure. 
     
    
    
     DETAILED DESCRIPTION 
     Hereinafter, embodiments of the present disclosure will be described as follows with reference to the attached drawings. 
     The terms used in the exemplary embodiments are used to simply describe an exemplary 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 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 exemplary embodiments in the present disclosure are not limited thereto. 
     In the drawings, an L direction is a first direction or a length direction, a W direction is a second direction or a width direction, a T direction is a third direction or a thickness direction. 
     In the descriptions described with reference to the accompanied drawings, the same elements or elements corresponding to each other will be described using the same reference numerals, and overlapped descriptions will not be repeated. 
     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 inductor, a general bead, a high frequency bead, a common mode filter, and the like. 
     Embodiment 
       FIG. 1  is a schematic perspective diagram illustrating a coil component according to an example embodiment.  FIG. 2  is a cross-sectional diagram taken along line I-I′ in  FIG. 1 .  FIG. 3  is a cross-sectional diagram taken along line II-II′ in  FIG. 1 .  FIGS. 4 and 5  are diagrams illustrating a position in which an external electrode is formed, viewed from above. 
     Referring to  FIGS. 1 to 5 , a coil component  1000  may include a body  100 , an internal insulating layer  200 , a coil portion  300 , and first and second external electrode  400  and  500 . 
     The body  100  may form an exterior of the coil component  1000 . The body  100  may have a hexahedral shape. 
     In the description below, an example in which the body  100  has a hexahedral shape is presented, but an embodiment is not limited thereto. 
     Referring to  FIGS. 2 to 5 , the body  100  may include 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. The first to fourth surfaces  101 ,  102 ,  103 , and  104  of the body  100  may correspond to walls of the body connecting the fifth surface  105  and the sixth surface  106  of the body. In the description below, front and rear surfaces opposing each other among the plurality of walls of the body may refer to the first surface  101  and the second surface  102 , and both side surfaces of the body opposing each other among the plurality of walls of the body  100  may refer to the third surface  103  and the fourth surface  104  of the body. 
     As an example, the body  100  may have a length of 4.0 mm, a width of 4.0±0.2 mm, and a thickness of 1.0 mm. In other words, referring to  FIGS. 4 and 5 , a distance A between the first surface  101  and the second surface  102  of the body  100  may be 4.0 mm, and a distance between the third surface  103  and the fourth surface  104  of the body  100  may be 4.0±0.2 mm. Thus, an absolute value of a difference between the length A and the width B of the body may be 0.2 mm or less. However, an example embodiment thereof is not limited to the size of the body  100  described above. Even though the size of the body is different from the aforementioned example, an example in which a length and a width of the body  100  are similar to each other such that it may be difficult to identify a length direction and a width direction of the body  100  by only an exterior of the body  100  may also be included in the scope of the present disclosure. The above-described size of the body  100  does not reflect a process error, and the like, and thus, an actual size of the body  100  may be different from the above-mentioned values due to a process error, and the like. 
     The body  100  may include a magnetic material and a resin material. For example, the body  110  may be formed by layering one or more magnetic composite sheets including a magnetic material dispersed in a resin. Alternatively, the body  100  may have a structure different from the structure in which a magnetic material is dispersed in a resin. For example, the body  100  may be formed of a magnetic material such as a ferrite. 
     The magnetic material may be a ferrite or a magnetic metal powder. 
     The ferrite may include, for example, one or more materials among a spinel ferrite such as an Mg—Zn ferrite, an Mn—Zn ferrite, an Mn—Mg ferrite, a Cu—Zn ferrite, an Mg—Mn—Sr ferrite, an Ni—Zn ferrite, and the like, a hexagonal ferrite such as a Ba—Zn ferrite, a Ba—Mg ferrite, a Ba—Ni ferrite, a Ba—Co ferrite, a Ba—Ni—Co ferrite, and the like, a garnet ferrite such as a Y ferrite, and a Li ferrite. 
     The magnetic metal powder may include one or more elements selected from a group consisting of iron (Fe), silicon (Si), chromium (Cr), cobalt (Co), molybdenum (Mo), aluminum (Al), niobium (Nb), copper (Cu), and nickel (Ni). For example, the magnetic metal powder may be one or more materials among a pure iron powder, a Fe—Si alloy powder, a Fe—Si—Al alloy powder, a Fe—Ni alloy powder, a Fe—Ni—Mo alloy powder, Fe—Ni—Mo—Cu alloy powder, a Fe—Co alloy powder, a Fe—Ni—Co alloy powder, a Fe—Cr alloy powder, a Fe—Cr—Si alloy powder, a Fe—Si—Cu—Nb alloy powder, a Fe—Ni—Cr alloy powder, and a Fe—Cr—Al alloy powder. 
     The magnetic metal powder may be amorphous or crystalline. For example, the magnetic metal powder may be a Fe—Si—B—Cr amorphous alloy powder, but an exemplary embodiment of the magnetic metal powder is not limited thereto. 
     The ferrite and the magnetic metal powder may have an average diameter of 0.1 μm to 30 μm, but an example of the average diameter is not limited thereto. 
     The body  100  may include two or more types of magnetic materials dispersed in a resin. The notion that types of the magnetic materials are different may indicate that one of an average diameter, a composition, crystallinity, and a form of one of the magnetic materials is different from those of the other magnetic material. 
     The resin may include one of an epoxy, a polyimide, a liquid crystal polymer, or mixture thereof, but the example of the resin is not limited thereto. 
     The body  100  may include a core  110  penetrating through the coil portion  300  and the internal insulating layer  200 . The core  110  may be formed by filling a through hole of the coil portion  300  and/or of the internal insulating layer  200  with a magnetic composite sheet, but an exemplary embodiment thereof is not limited thereto. 
     The internal insulating layer  200  may be buried in the body  100 . The internal insulating layer  200  may include the coil portion  300 . The internal insulating layer  200  may support the coil portion  300 . 
     The internal insulating layer  200  may be formed of an insulating material including a thermosetting insulating resin such as an epoxy resin, a thermoplastic insulating resin such as a 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 internal insulating layer  200  may be formed of an insulating material such as prepreg, Ajinomoto Build-up Film (ABF), FR-4, a bismaleimide triazine (BT) resin, a photoimageable dielectric (PID), and the like, but an example of the material of the internal insulating layer is not limited thereto. 
     As an inorganic filler, one or more elements 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, aluminium 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 internal insulating layer  200  is formed of an insulating material including a reinforcing material, the internal insulating layer  200  may provide improved stiffness. When the internal insulating layer  200  is formed of an insulating material which does not include a glass fiber, the internal insulating layer  200  may be desirable to reducing an overall thickness of the coil component  1000 . When the internal insulating layer  200  is formed of an insulating material including a photosensitive insulating resin, the number of processes may be reduced such that manufacturing costs may be reduced, and a fine via may easily be processed. 
     The coil portion  300  in the example embodiment may include at least one coil winding or turn (and potentially plural coil windings or turns) between opposing first and second ends thereof. For example, the coil portion  300  may include a first coil pattern  311  and a second coil pattern  312  connected in series between the first and second ends thereof. The coil portion  300  may further include a first main lead-out portion  311   a  and a first auxiliary lead-out portion  311   b  at the first end thereof, and a second main lead-out portion  312   a  and a second auxiliary lead-out portion  312   b  at the second end thereof. 
     The internal insulating layer  200  may extend to be exposed to a support portion disposed in a central region of the body  100  to support the first and second coil patterns  311  and  312  and exposed to the first to fourth surfaces  101 ,  102 ,  103 , and  104  of the body  100  from the support portion, and may include first to fourth protrusions  211 ,  212 ,  213 , and  214  respectively supporting the first main lead-out portion  311   a , the first auxiliary lead-out portion  311   b , the second main lead-out portion  312   a , and the second auxiliary lead-out portion  312   b.    
     Referring to  FIGS. 2 and 3 , for example, the first main lead-out portion  311   a  may be disposed on a lower surface of the first protrusion  211 , the first auxiliary lead-out portion  311   b  may be disposed on a lower surface of the second protrusion  212 , the second main lead-out portion  312   a  may be disposed on an upper surface of the third protrusion  213 , and the second auxiliary lead-out portion  312   b  may be disposed on an upper surface of the fourth protrusion  214 , respectively, in the directions indicated in  FIGS. 2 and 3 . 
     As a result, the first protrusion  211  and the first main lead-out portion  311   a  may be exposed to the first surface  101  of the body, the second protrusion  212  and the first auxiliary lead-out portion  311   b  may be exposed to the third surface  103  of the body  100 , the third protrusion  213  and the second main lead-out portion  312   a  may be exposed to the second surface  102 , and the fourth protrusion  214  and the second auxiliary lead-out portion  312   b  may be exposed to the fourth surface  104  of the body  100 . Thus, due to the first to fourth protrusions  211 ,  212 ,  213 , and  214 , the internal insulating layer  200  may be exposed to the first to fourth surfaces  101 ,  102 ,  103 , and  104  of the body  100 , respectively. 
     The coil portion  300  may be disposed on the internal insulating layer  200  and may be buried in the body  100 , and may embody properties of the coil component. For example, when the coil component  1000  is used as a power inductor, the coil portion  300  may store an electric field as a magnetic field such that an output voltage may be maintained, thereby stabilizing power of an electronic device. 
     The coil portion  300  in the example embodiment may include the first coil pattern  311 , the second coil pattern  312 , the first main lead-out portion  311   a , the first auxiliary lead-out portion  311   b , the second main lead-out portion  312   a , the second auxiliary lead-out portion  312   b , and a via  320 . 
     The first coil pattern  311 , the internal insulating layer  200 , and the second coil pattern  312  may be layered in order in a thickness direction T of the body  100 . 
     The first coil pattern  311  and the second coil pattern  312  may have a planar spiral shape. As an example, the first coil pattern  311  may form at least one turn with reference to or around a core  110  of the body on one surface (e.g., on a lower surface of the internal insulating layer  200  with reference to  FIG. 2 ) of the internal insulating layer  200 . The second coil pattern  312  may form at least one turn with reference to or around the core  110  of the body on the other surface (e.g., on an upper surface of the internal insulating layer  200  with reference to  FIG. 2 ) of the internal insulating layer  200 . The first coil pattern  311  and the second coil pattern  312  may be coiled or wound in the same direction. 
     The first main lead-out portion  311   a  and the first auxiliary lead-out portion  311   b  may extend from the first coil pattern  311 , and may be spaced apart from each other and exposed to the first and third surfaces  101  and  103  of the body  100 , respectively. For example, the first main lead-out portion  311   a  may only be exposed to the first surface  101  of the body  100 , and the first auxiliary lead-out portion  311   b  may only be exposed to the third surface  103  of the body  100 . 
     The second main lead-out portion  312   a  and the second auxiliary lead-out portion  312   b  may extend from the second coil pattern  312 , and may be spaced apart from each other and exposed to the second and fourth surfaces  102  and  104  of the body  100 , respectively. For example, the second main lead-out portion  312   a  may only be exposed to the second surface  102  of the body  100 , and the second auxiliary lead-out portion  312   b  may only be exposed to the fourth surface  104  of the body  100 . 
     As a result, the coil component  1000  in the example embodiment may be configured such that, regardless of the pair of opposing side surfaces identified in a process of identifying and specifying surfaces on which first and second external electrodes  400  and  500  are formed among the surfaces of the body  100 , the first and second external electrodes  400  and  500  may easily be connected to the coil portion  300 . Thus, even when it is difficult to identify a width direction and a length direction in the case that a width and a length of the body  100  are similar to each other, by disposing the first and second external electrodes  400  and  500  on two surfaces opposing each other among the first to fourth surfaces  101 ,  102 ,  103 , and  104  of the body  100 , the first and second external electrodes  400  and  500  may be connected to opposing ends of the coil portion  300 . 
     For example, as illustrated in  FIG. 4 , the first and second external electrodes  400  and  500  may be formed on the first and second surfaces  101  and  102  of the body  100  opposing each other in a length direction L of the body  100 , or as illustrated in  FIG. 5 , the first and second external electrodes  400  and  500  may be formed on the third and fourth surfaces  103  and  104  of the body  100  opposing each other in a width direction W of the body  100 , thereby easily connecting the first and second external electrodes  400  and  500  to the coil portion  300 . Accordingly, the coil component  100  in the example embodiment may not require any identification mark, generally used when the first and second external electrodes  400  and  500  are formed. 
     The first main lead-out portion  311   a  and the first auxiliary lead-out portion  311   b  may be formed in the same process as the process of forming the first coil pattern  311 , and a boundary may not be formed therebetween. Thus, the first main lead-out portion  311   a , the first auxiliary lead-out portion  311   b , and the first coil pattern  311  may be integrated with each other. The second main lead-out portion  312   a  and the second auxiliary lead-out portion  312   b  may be formed in the same process as the process of forming the second coil pattern, and a boundary may not be formed therebetween. Thus, second main lead-out portion  312   a , the second auxiliary lead-out portion  312   b , and the second coil pattern may be integrated with each other. 
     An area of the first main lead-out portion  311   a  exposed to the first surface  101  of the body  100 , an area of the first auxiliary lead-out portion  311   b  exposed to the third surface  103  of the body  100 , an area of the second main lead-out portion  312   a  exposed to the second surface  102  of the body  100 , and an area of the second auxiliary lead-out portion  312   b  exposed to the fourth surface  104  of the body  100  may be substantially the same. In this case, irrespective of the surfaces on which the first and second external electrodes  400  and  500  are disposed among the first to fourth surfaces  101 ,  102 ,  103 , and  104  of the body  100 , connection reliability between the coil portion  300  and the first and second external electrodes  400  and  500  may be maintained constantly. 
     The via  320  may penetrate through the internal insulating layer  200  and may be in contact with the first coil pattern  311  and the second coil pattern  312  to electrically connect the first coil pattern  311  and the second coil pattern  312  to each other. For example, the via  320  may penetrate through one region of the support portion of the internal insulating layer  200 . As a result, the coil portion  300  in the example embodiment may be formed as a single coil generating an electric field in a thickness direction T of the body  100  in the body  100 . 
     The first coil pattern  311  and the second coil pattern  312  may be configured such that thicknesses may be less than widths. Accordingly, an aspect ratio (A/R), a ratio of a thickness to a width, of each turn of the first coil pattern  311  and the second coil pattern  312  may be less than 1. Thus, the coil component  1000  may have a relatively low thickness, and an electronic device including the coil component  1000  may also have a relatively low thickness. 
     At least one of the first coil pattern  311 , the second coil pattern  312 , the first main lead-out portion  311   a , the first auxiliary lead-out portion  311   b , the second main lead-out portion  312   a , the second auxiliary lead-out portion  312   b , and the via  320  may include at least one or more conductive layers. 
     As an example, when the second coil pattern  312 , the second main lead-out portion  312   a , the second auxiliary lead-out portion  312   b , and the via  320  are formed by a plating method, the second coil pattern  312 , the second main lead-out portion  312   a , the second auxiliary lead-out portion  312   b , and the via  320  each may include a seed layer and an electroplating layer. The seed layer may be formed by an electroless plating process or may be formed by a vapor deposition process such as a sputtering process. The electroplating layer may have a single-layer structure, or may have a multilayer structure. The electroplating layer having a multilayer structure may have a conformal film structure in which one of the electroplating layers is covered by the other electroplating layer, or may have a form in which one of the electroplating layers is disposed on one surface of the other plating layers. 
     The seed layers of the second coil pattern  312 , the second main lead-out portion  312   a , and the second auxiliary lead-out portion  312   b , and the seed layer of the via  320  may be integrated with one another such that no boundary may be formed therebetween, but an exemplary embodiment thereof is not limited thereto. The electroplating layers of the second coil pattern  312 , the second main lead-out portion  312   a , and the second auxiliary lead-out portion  312   b  and the electroplating layer of the via  320  may be integrated with one another such that no boundary may be formed therebetween, but an exemplary embodiment thereof is not limited thereto. 
     As an example, when the coil portion  300  is formed by forming the first coil pattern  311  and the second coil pattern  312  separately and layering the first coil pattern  311  and the second coil pattern  312  on the internal insulating layer  200  (e.g., on opposing surfaces of the internal insulating layer  200 ), the via  320  may include a metal layer having a high melting point, and a metal layer having a low melting point relatively lower than the melting point of the metal layer having a high melting point. The metal layer having a low melting point may be formed of a solder including lead (Pb) and/or tin (Sn). The metal layer having a low melting point may be partially melted due to pressure and temperature generated during the layer process, and an inter-metallic compound layer (IMC layer) may be formed on boundaries between the metal layer having a low melting point and the first coil pattern  311 , between the metal layer having a low melting point and the second coil pattern  312 , and between the metal layer having a high melting point and the metal layer having a low melting point. 
     As an example, the first coil pattern  311  and the second coil pattern  312  may be formed on and protrude from a lower surface and an upper surface of the internal insulating layer  200 , respectively. As another example, the first coil pattern  311  may be buried in a lower surface of the internal insulating layer  200 , and a lower surface of the first coil pattern  311  may be exposed through the lower surface of the internal insulating layer  200 , and the second coil pattern  312  may be formed on and protrude from the upper surface of the internal insulating layer  200 . In this case, a concave portion may be formed on the lower surface of the first coil pattern  311 , the first coil pattern  311  may be disposed in the concave portion, and a lower surface of the internal insulating layer  200  and a lower surface of the first coil pattern  311  may not be coplanar with each other. 
     As another example, the first coil pattern  311  may be buried in a lower surface of the internal insulating layer  200 , and the lower surface of the first coil pattern  311  may be exposed through the lower surface of the internal insulating layer  200 , and the second coil pattern  312  may be buried in an upper surface of the internal insulating layer  200 , and the upper surface of the second coil pattern  312  may be exposed through the upper surface of the internal insulating layer  200 . 
     The first coil pattern  311 , the second coil pattern  312 , the first main lead-out portion  311   a , the first auxiliary lead-out portion  311   b , the second main lead-out portion  312   a , the second auxiliary lead-out portion  312   b , and a 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), or alloys thereof, but an example of the material is not limited thereto. 
     The first and second external electrodes  400  and  500  may be disposed on the sixth surface  106  of the body  100  and may be spaced apart from each other, and may be connected to the coil portion  300 . For example, the first external electrode  400  may include a first connection portion  410  connected to the first main lead-out portion  311   a  of the coil portion  300  and disposed on the first surface  101 , and a first extended portion  420  extending onto the sixth surface  106  of the body  100  from the first connection portion  410 . The second external electrode  500  may include a second connection portion  510  disposed on the second surface  102  of the body  100  and connected to the second main lead-out portion  312   a  of the coil portion  300 , and a second extended portion  520  extending onto the sixth surface  106  of the body  100  from the second connection portion  510 . The first extended portion  420  and the second extended portion  520  disposed on the sixth surface  106  of the body  100  may be spaced apart from each other to prevent shorts between the first external electrode  400  and the second external electrode  500 . 
     The first and second external electrodes  400  and  500  may be formed through a vapor deposition process such as a sputtering process, a plating process, or a paste printing process. When the first and second external electrodes  400  and  500  are formed, the connection portions  410  and  510  and the extended portions  420  and  520  may be formed through separate processes, and boundaries may be formed therebetween. Alternatively, the connection portions  410  and  510  and the extended portions  420  and  520  may be formed through the same process such that boundaries may not be formed therebetween, and the connection portions  410  and  510  and the extended portions  420  and  520  may be integrated with each other. 
     The first and second external electrodes  400  and  500  may be formed of copper (Cu), aluminum (Al), silver (Ag), tin (Sn), gold (Au), nickel (Ni), lead (Pb), titanium (Ti), or alloys thereof, but an example of the material is not limited thereto. The first and second external electrodes  400  and  500  each may have a single layer structure, or may have a structure including a plurality of layers. When the first and second external electrodes  400  and  500  have a structure including a plurality of layers, the first and second external electrodes  400  and  500  each may include a conductive resin layer including conductive powder and resin, a nickel-plated layer including nickel (Ni) and a tin-plated layer including tin (Sn), but an example embodiment thereof is not limited thereto. 
     The first and second external electrodes  400  and  500  may electrically connect the coil component  1000  to a printed circuit board, and the like, when the coil component  1000  is mounted on the printed circuit board. As an example, the coil component  1000  may be mounted after the sixth surface  106  of the body  100  is disposed towards a printed circuit board, and the coil component  1000  may easily be connected to the printed circuit board, and the like, through the first and second extended portions  420  and  520  disposed together on the sixth surface  106  of the body  100 . 
       FIG. 1  illustrates the example in which the first and second external electrodes  400  and  500  each are a five-sided electrode (e.g., each are disposed on five surfaces of the body  110 ), but an example embodiment is not limited thereto. The first and second external electrodes  400  and  500  each may be a three-sided electrode or an L-shaped electrode differently from the example illustrated in  FIG. 1 . 
     Although not illustrated, the coil component  1000  may include the first coil pattern  311 , the second coil pattern  312 , the first main lead-out portion  311   a , the first auxiliary lead-out portion  311   b , the second main lead-out portion  312   a , the second auxiliary lead-out portion  312   b , and an insulating film formed along a surface of the internal insulating layer  200 . The insulating film may cover surfaces of and thereby protect the first coil pattern  311 , the second coil pattern  312 , the first main lead-out portion  311   a , the first auxiliary lead-out portion  311   b , the second main lead-out portion  312   a , and the second auxiliary lead-out portion  312   b , and may insulate the first coil pattern  311 , the second coil pattern  312 , the first main lead-out portion  311   a , the first auxiliary lead-out portion  311   b , the second main lead-out portion  312   a , and the second auxiliary lead-out portion  312   b  from the body  100 . The insulating film may include a material such as parylene, and the like. An insulting material included in the insulating film may not be limited to any particular material. The insulating film may be formed through a vapor deposition process, or the like, but the method for forming the insulating film is not limited thereto. The insulating film may be formed by stacking an insulating material on both surfaces of the internal insulating layer  200  on which the first and second coil patterns  311  and  312  are disposed. The insulating film may not be provided depending on a design if desired. 
     Although not illustrated, at least one of the first coil pattern  311  and the second coil pattern  312  may have a plurality of layers. As an example, the coil portion  300  may have a structure in which a plurality of the first coil patterns  311  are formed, and one of the first coil patterns  311  may be layered on the other one of the first coil patterns  311 . In this case, an additional insulating layer may be disposed between the plurality of first coil patterns  311 , and a connection via penetrating through the additional insulating layer may be disposed to connect adjacent first coil patterns  311  to each other. 
     Another Embodiment 
       FIG. 6  is a schematic perspective diagram illustrating a coil component according to an example embodiment. 
     Referring to  FIGS. 1 to 6 , a coil component  2000  in the example embodiment may further include an external insulating layer  600  as compared to the coil component  1000  described in the aforementioned example embodiment. Thus, in the description below, only the external insulating layer  600  will be described. As for the other elements of the example embodiment, the same descriptions described in the aforementioned example embodiment may be applied. 
     Referring to  FIG. 6 , the external insulating layer  600  may cover an external surface of the body  100  surrounding the body  100 . The external insulating layer  600  may include openings exposing first and second main lead-out portions  311   a  and  312   a  to connect first and second external electrodes  400  and  500  to a coil portion  300 . 
     For example, the external insulating layer  600  may include a first external insulating layer disposed on a first surface  101  of a body  100 , a second external insulating layer disposed on a second surface  102  of the body  100 , a third external insulating layer disposed on a third surface  103  of the body  100 , a fourth external insulating layer  104  disposed on a fourth surface  104  of the body  100 , a fifth external insulating layer disposed on a fifth surface  105  of the body  100 , and a sixth external insulating layer disposed on a sixth surface  106  of the body  100 . The first to sixth external insulating layers may be integrated with each other through a dipping process. Alternatively, two or more of the first to sixth external insulating layers may form a boundary. The first to sixth external insulating layers may be formed by coating surfaces of the body  100  with an insulating paste, or may be formed by layering insulating films on a surface of the body  100  and curing the insulating films. 
     The external insulating layer  600  including an opening may be used as a mask when the external electrodes  400  and  500  are formed on the body  100 . 
     The external insulating layer  600  may include a thermoplastic resin such as a polystyrene resin, a vinyl acetate resin, a polyester resin, a polyethylene resin, a polypropylene resin, a polyamide resin, a rubber resin, an acrylic resin, and the like, a thermosetting resin such as a phenolic resin, an epoxy resin, a urethane resin, a melamine resin, an alkyd resin, and the like, a photosensitive resin, or an insulating resin such as a parylene resin, and the like. 
     The opening may be formed by, after forming the external insulating layer  600  to cover the first to sixth surfaces  101 ,  102 ,  103 ,  104 ,  105 , and  106  of the body  100 , exposing at least portions of two surfaces opposing each other among the first to fourth surfaces  101 ,  102 ,  103 , and  104  of the body. Alternatively, the external insulating layer  600  may not be disposed on at least portions of two surfaces opposing each other among the first to fourth surfaces  101 ,  102 ,  103 , and  104  of the body  100  to form the opening. 
     According to the aforementioned example embodiments, as it may not be necessary to specify the surface on which the external electrode is formed, costs and time for manufacturing a coil component may reduce. 
     While the exemplary embodiments have been shown and described above, it will be apparent to those skilled in the art that modifications and variations could be made without departing from the scope of the present invention as defined by the appended claims.