JP6439384B2 - Coil parts - Google Patents

Description

The present invention relates to a coil component including an insulating layer in which a coil core is embedded and a coil electrode wound around the coil core.

  In an electronic device using a high-frequency signal, a coil component may be used to prevent noise. This type of coil component may be composed of a coil core formed of a magnetic material or the like and a coil electrode around which the coil core is wound. Here, the winding of the coil electrode is often performed manually, and eliminating this manual operation has been an issue in reducing the manufacturing cost of the coil component.

  Therefore, conventionally, a coil component has been proposed that does not require manual work for winding the coil electrode. For example, a coil component 100 described in Patent Document 1 shown in FIG. 10 includes a wiring board 101, an annular coil core 102 placed on one main surface of the wiring board 101, and a coil electrode wound around the coil core 102. 103.

  The coil electrode 103 includes a plurality of wiring films 104 formed on the upper surface of the wiring substrate 101 and a plurality of upper wiring elements 105 formed in a substantially U shape so as to surround the outer surface, upper surface, and inner surface of the coil core 102. It consists of. Here, each wiring film 104 is provided with an insertion hole for inserting the tip of one upper wiring element 105 at each end thereof, and the tip of the upper wiring element 105 is inserted into these insertion holes and soldered. The coil electrode 103 that spirally winds around the coil core 102 is formed. According to this configuration, since the coil electrode 103 can be formed without winding one wire around the coil core 102, the coil component 100 can be automated.

JP-A-8-203762 (see paragraphs 0012 to 0016, FIG. 1, etc.)

  By the way, this type of coil component is required to improve the coil characteristics without increasing the size of the coil component. As an example of improving the coil characteristics, it is conceivable to increase the number of turns of the coil electrode to obtain a high inductance. However, in the conventional coil electrode 103, the upper wiring portion 105 a passing through the upper side of the coil core 102 of each upper wiring element 105 has a coil core 102 (a central axis parallel to the winding direction of the coil electrode 103 of the coil core 102). The wiring films 104 are arranged obliquely with respect to the coil core 102 in plan view. As described above, when the directions of the upper wiring portions 105a and the wiring films 104 are different in a plan view and are arranged obliquely, it is difficult to increase the number of turns of the coil electrode 103.

  The present invention has been made in view of the above-described problems, and an object thereof is to provide a coil component that can easily increase the number of turns of a coil electrode that winds a coil core.

In order to achieve the above object, a coil component of the present invention includes an insulating layer in which a coil core is embedded, and a coil electrode wound around the coil core, and the coil electrode has one end of the coil core. A plurality of first wiring patterns arranged on one side and the other end arranged on the other side of the coil core, arranged on one main surface of the insulating layer, and one end arranged on one side of the coil core The other end of the coil core is disposed on the other side of the coil core, and a plurality of second wiring patterns arranged on the other main surface of the insulating layer so as to form a plurality of pairs with the first wiring patterns. A plurality of one-side conductors arranged on one side and connecting one end of each of the first wiring patterns and one end of the second wiring pattern paired with the first wiring pattern; Arranged on the other side of the coil core and connects the other end of each of the first wiring patterns to the other end of the second wiring pattern adjacent to the second wiring pattern that forms a pair with the first wiring pattern. A plurality of other conductors, and the first wiring patterns and the second wiring patterns are arranged so as to be orthogonal to a central axis parallel to a winding axis direction of the coil electrode of the coil core in a plan view. The one-side conductor and the other-side conductor have a width equal to a distance in plan view between the first wiring pattern and the second wiring pattern that form a pair, and the first wiring pattern And the contact position with the second wiring pattern are shifted from each other in plan view .

According to this structure, not only each 1st wiring pattern but each 2nd wiring pattern is arrange | positioned so that it may orthogonally cross in a planar view with the central axis parallel to the winding axis direction of the coil electrode of a coil core, and each 1st wiring pattern And the second wiring patterns are arranged in the same direction in plan view, the number of turns of the coil electrode can be easily increased. In addition, each one-side conductor and each other-side conductor have a width equal to the distance in plan view between the first wiring pattern and the second wiring pattern that form a pair, and thus the first and second pairs that form a pair. Even if the wiring patterns are shifted from each other in plan view, both (the first and second wiring patterns) can be easily connected by the one-side and other-side conductors. Another coil component of the present invention includes an insulating layer in which a coil core is embedded, and a coil electrode wound around the coil core, and one end of the coil electrode is disposed on one side of the coil core. And the other end is disposed on the other side of the coil core, and a plurality of first wiring patterns arranged on one main surface of the insulating layer, and one end is disposed on the one side of the coil core and the other end is the coil core. A plurality of second wiring patterns arranged on the other main surface of the insulating layer so as to form a plurality of pairs with each of the first wiring patterns, and arranged on the one side of the coil core. A plurality of one-side conductors connecting one end of each of the first wiring patterns and one end of the second wiring pattern paired with the first wiring pattern, and the other of the coil core A plurality of other sides that are arranged on the side and connect the other end of each of the first wiring patterns to the other end of the second wiring pattern adjacent to the second wiring pattern that forms a pair with the first wiring pattern Each of the first wiring patterns and each of the second wiring patterns is arranged so as to be orthogonal to a central axis parallel to a winding axis direction of the coil electrode of the coil core in a plan view. The one side conductor and each of the other side conductors have a width larger than a distance in plan view between the first wiring pattern and the second wiring pattern forming a pair, and a contact position with the first wiring pattern And the contact position with the second wiring pattern are shifted in plan view. According to this configuration, even if the first and second wiring patterns that are paired are shifted from each other in plan view, both (first and second wiring patterns) can be easily connected by the conductor on one side and the other side. Can do.

  The specific resistances of the one-side and other-side conductors may be smaller than the specific resistances of the first and second wiring patterns. When each of the first and second wiring patterns has a higher specific resistance than that of each of the one side and the other side conductors, the entire first and second wiring patterns can be improved to improve coil characteristics (for example, Q value). It is preferable to shorten the wiring length. If it does in this way, since the resistance value as the whole coil electrode can be lowered | hung, a coil characteristic improves. On the other hand, according to this configuration, each of the first and second wiring patterns is disposed so as to be orthogonal to the central axis parallel to the winding axis direction of the coil electrode of the coil core in a plan view. The entire wiring length of the pattern can be shortened. Therefore, the coil characteristics can be improved when the specific resistances of the respective one-side and other-side conductors are smaller than the specific resistances of the respective first and second wiring patterns.

  Each of the first wiring patterns may be arranged at a position that does not overlap any of the second wiring patterns in plan view. In this case, since the parasitic capacitance generated between the first wiring pattern and the second wiring pattern can be reduced, the coil characteristics of the coil component can be improved.

  Moreover, each said one side conductor and each said other side conductor may be formed with the metal pin. In the case of via conductors or through-hole conductors that require the formation of through-holes, it is necessary to provide a predetermined gap between adjacent conductors in order to form independent through-holes. There is a limit to increasing the number of turns of the coil. In the case of a metal pin that does not form a through hole, it is easy to narrow the gap between adjacent metal pins, so that the number of turns of the coil electrode can be easily increased.

  In addition, since the metal pin has a lower specific resistance than a via conductor or a through-hole conductor formed by filling a via hole with a conductive paste, the resistance value of the coil electrode as a whole can be reduced. Therefore, for example, a coil component excellent in coil characteristics such as Q value can be provided.

According to the present invention, each first wiring pattern and each second wiring pattern forming the coil electrode are arranged so as to be orthogonal to the central axis parallel to the winding axis direction of the coil electrode of the coil core in plan view, Since each 1st wiring pattern and each 2nd wiring pattern are arrange | positioned in the same direction by planar view, the winding number of a coil electrode can be increased easily. In addition, each one-side conductor and each other-side conductor have a width equal to the distance in plan view between the first wiring pattern and the second wiring pattern that form a pair, and thus the first and second pairs that form a pair. Even if the wiring patterns are shifted from each other in plan view, both (the first and second wiring patterns) can be easily connected by the one-side and other-side conductors.

It is a top view of the coil components concerning 1st Embodiment of this invention. It is a figure for demonstrating the wiring structure of the coil electrode of FIG. It is a figure which shows the modification of a coil electrode. It is a figure which shows the other modification of a coil electrode. It is a top view of the coil components concerning 2nd Embodiment of this invention. It is a top view of the coil components concerning 3rd Embodiment of this invention. It is a top view of the coil components concerning 4th Embodiment of this invention. It is a figure for demonstrating the upper side wiring pattern of FIG. It is a figure which shows the modification of an upper side and a lower side wiring pattern. It is a perspective view of the conventional coil components.

<First Embodiment>
A coil component 1a according to a first embodiment of the present invention will be described with reference to FIGS. 1 is a plan view of the coil component 1a, FIG. 2 is a diagram for explaining the wiring structure of the coil electrode 4, and is a perspective view of the main part of FIG.

  As shown in FIGS. 1 and 2, the coil component 1 a according to this embodiment includes an insulating layer 2 in which a coil core 3 is embedded, and two coil electrodes 4 wound around the coil core 3. It is mounted on an electronic device such as a mobile phone that uses the signal.

  The insulating layer 2 is formed of a resin such as an epoxy resin, for example, and is formed with a predetermined thickness so as to cover the coil core 3 and a plurality of metal pins 5a and 5b described later.

  The coil core 3 is formed of a magnetic material that is employed as a general coil core such as Mn—Zn ferrite. The coil core 3 of this embodiment has an annular shape.

  The coil electrode 4 is wound around the annular coil core 3 in a spiral shape, and has a plurality of metal pins 5 a and 5 b arranged around the coil core 3 in a state of being erected in the thickness direction of the insulating layer 2. And a plurality of upper wiring patterns 6a and a plurality of lower wiring patterns 6b. Each metal pin 5a, 5b is formed of a metal material generally adopted as a wiring electrode, such as Cu, Au, Ag, Al, or a Cu-based alloy. Moreover, each metal pin 5a, 5b can be formed by carrying out the shearing process etc. of the metal wire formed with either of these metal materials.

  Each upper wiring pattern 6 a is formed on the upper surface of the insulating layer 2. At this time, one end of each upper wiring pattern 6a is disposed inside the coil core 3 (corresponding to “one side” of the present invention), and the other end is disposed outside the coil core 3 (corresponding to “the other side” of the present invention). Arranged in the circumferential direction in the arranged state.

  Each lower wiring pattern 6b is formed on the lower surface of the insulating layer 2 so as to form a plurality of pairs with each upper wiring pattern 6a. At this time, each lower wiring pattern 6b is arranged in the circumferential direction in a state where one end is disposed inside the coil core 3 and the other end is disposed outside the coil core 3, similarly to each upper wiring pattern 6a.

  Each of the upper and lower wiring patterns 6a and 6b can be formed by screen printing using a conductive paste containing a metal such as Cu or Ag. Since the conductive paste is formed by mixing a filler formed of Cu or Ag and an organic solvent, in this embodiment, the upper and lower wiring patterns 6a and 6b are compared with the metal pins 5a and 5b. And the specific resistance is high.

  Each of the upper and lower wiring patterns 6a and 6b includes, for example, a base electrode formed of a conductive paste containing a metal such as Cu or Ag on the upper surface (or lower surface) of the insulating layer 2, and the base For example, the electrode may be formed in a two-layer structure with a surface electrode laminated by Cu plating. In this case, the resistance value can be lowered as compared with the case where the upper and lower wiring patterns 6a and 6b are formed only with the conductive paste. The upper wiring pattern 6a corresponds to the “first wiring pattern” of the present invention, and the lower wiring pattern 6b corresponds to the “second wiring pattern” of the present invention.

  Each of the metal pins 5a and 5b is arranged along the inner peripheral surface of the coil core 3 (hereinafter may be referred to as the inner metal pin 5a), and is arranged along the outer peripheral surface of the coil core 3 (hereinafter referred to as “inner metal pin 5a”). , Sometimes referred to as the outer metal pin 5b). In this embodiment, the upper end surface of each inner metal pin 5a and each outer metal pin 5b is exposed from the upper surface of the insulating layer 2, and the lower end surface of each inner metal pin 5a and each outer metal pin 5b is the insulating layer. 2 exposed from the lower surface. Here, each inner metal pin 5a corresponds to "one side conductor" of the present invention, and each outer metal pin 5b corresponds to "other side conductor" of the present invention.

  Each inner metal pin 5a connects one end of each upper wiring pattern 6a to one end of the lower wiring pattern 6b that forms a pair with the upper wiring pattern 6a. The upper and lower wiring patterns 6a and 6b forming a pair are arranged in parallel at a predetermined interval L1 in plan view. Each inner metal pin 5a has a width W1 equal to the interval L1 in plan view so that one end of the upper and lower wiring patterns 6a, 6b forming a pair can be connected to each other. That is, the width W1 of each inner metal pin 5a is adjusted according to the distance (interval L1) in plan view of the upper and lower wiring patterns 6a and 6b to be connected.

  Each inner metal pin 5a has a contact position with the upper wiring pattern 6a to be connected (contact position between the upper end surface of the inner metal pin 5a and the upper wiring pattern 6a) and a contact position (inner side) with the lower wiring pattern 6b. The contact position between the lower end surface of the metal pin 5a and the lower wiring pattern 6b is shifted from the plan view. Here, the case where “the width W1 of the inner metal pin 5a is equal to the interval L1” described above is included. The width W1 of the inner metal pin 5a may be larger than the interval L1.

  Each outer metal pin 5b has a lower side adjacent to the other end of each upper wiring pattern 6a and a predetermined side (counterclockwise in this embodiment) of the lower wiring pattern 6b paired with the upper wiring pattern 6a. The other end of the wiring pattern 6b is connected. Each outer metal pin 5b has a width W1 equal to the interval L1 in a plan view of the upper and lower wiring patterns 6a and 6b to be connected in the same manner as each inner metal pin 5a. Contact position (contact position between the upper end surface of the outer metal pin 5b and the upper wiring pattern 6a) and contact position between the lower wiring pattern 6b (contact position between the lower end surface of the outer metal pin 5b and the lower wiring pattern 6b) Are displaced from each other in plan view. Here, the above-mentioned “the width W1 of the outer metal pin 5b is equal to the interval L1” includes the case where it is substantially equal to the inner metal pin 5a. Further, like the inner metal pin 5a, the width W1 of the outer metal pin 5b may be larger than the interval L1.

  In this embodiment, each of the inner and outer metal pins 5a and 5b is formed in a columnar shape having a substantially elliptical cross section, but may be formed in a prismatic shape, for example. Also, the inner and outer metal pins 5a and 5b may be formed of via conductors.

  With the configuration as described above, the coil electrode 4 that is spirally wound around the coil core 3 is formed. In this embodiment, the coil electrode 4 is devised so that the number of turns of the coil electrode 4 can be easily increased. ing. Specifically, as shown in FIG. 1, each of the upper wiring patterns 6 a and the lower wiring patterns 6 b is viewed in plan view on the central axis CA <b> 1 of the coil core 3 parallel to the winding axis direction of the coil electrode 4. Are arranged so as to be orthogonal to each other. In other words, each of the upper and lower wiring patterns 6a and 6b is arranged in parallel in a direction orthogonal to the tangential direction of the outer periphery or inner periphery of the coil core 3 in plan view. Therefore, the conventional problem, that is, the upper wiring pattern 6a or the lower wiring pattern 6b is obliquely arranged, and the angle of the upper wiring pattern 6a with respect to the central axis CA1 and the angle of the lower wiring pattern 6b with respect to the central axis CA1 are The hindrance to increase in the number of turns of the coil electrode 4 due to the difference can be reduced. The upper and lower wiring patterns 6a and 6b may be arranged so as to be substantially orthogonal or substantially orthogonal to the central axis CA1 in plan view.

(Manufacturing method of coil parts)
Next, an example of a method for manufacturing the coil component 1a will be briefly described.

  First, the metal pins 5a and 5b are arranged on one main surface of the flat transfer plate. In this case, the upper end surfaces of the metal pins 5a and 5b are fixed to one main surface of the transfer plate, and the metal pins 5a and 5b are fixed in a standing state. Each metal pin 5a, 5b can be formed, for example, by shearing a metal wire (for example, Cu) having a substantially elliptical cross section.

  Next, a resin layer is formed on one main surface of the resin sheet with a release layer (flat plate shape). In this case, the resin sheet, the release layer, and the resin layer are arranged in this order, and the resin layer is formed in an uncured state.

  Next, after mounting the transfer plate on the resin sheet so that the lower end surfaces of the metal pins 5a and 5b are in contact with the resin layer, the resin of the resin layer is cured.

  Next, after peeling off the transfer plate, the coil core 3 is disposed at a predetermined position on the resin sheet, and the metal pins 5a and 5b and the coil core 3 are molded with, for example, epoxy resin to form the insulating layer 2 on the resin sheet. To do.

  Next, the resin sheet with a release layer is peeled off, and the front and back surfaces of the insulating layer 2 are polished or ground. Thereby, the upper end surface of each metal pin 5a, 5b is exposed from the upper surface of the insulating layer 2, and the lower end surface is exposed from the lower surface of the insulating layer 2.

  Finally, each upper wiring pattern 6a is formed on the upper surface of the insulating layer 2, and each lower wiring pattern 6b is formed on the lower surface of the insulating layer 2, thereby completing the coil component 1a. Each of the upper and lower wiring patterns 6a and 6b can be formed by screen printing using a conductive paste containing a metal such as Cu, for example. Further, the upper and lower wiring patterns 6a and 6b may be formed in a two-layer structure by performing Cu plating on the wiring pattern formed of this conductive paste. In addition, as another example of the method of forming the upper and lower wiring patterns 6a and 6b, for example, a predetermined pattern shape (upper or lower side) is formed by etching a plate member with a Cu foil attached to one main surface. The shape of the wiring patterns 6a and 6b). This plate-like member is prepared individually for each of the upper and lower wiring patterns 6a and 6b. In this case, the upper and lower wiring patterns 6a and 6b can be bonded to the upper end surface or the lower end surface of the metal pins 5a and 5b by ultrasonic bonding using the plate-like member.

  Therefore, according to the above-described embodiment, not only the upper wiring patterns 6a but also the lower wiring patterns 6b are arranged so as to be orthogonal to the central axis CA1 of the coil core 3 in plan view. And since each upper side wiring pattern 6a and each lower side wiring pattern 6b are arrange | positioned in the same direction by planar view, the number of turns of the coil electrode 4 can be increased easily compared with the past.

  In this type of coil component, coil characteristics (for example, Q value) can be improved by lowering the resistance value of the entire coil electrode. Therefore, when the specific resistance of the upper and lower wiring patterns 6a and 6b is high as in this embodiment, the coil characteristics can be improved by shortening the length of the upper and lower wiring patterns 6a and 6b. Can do. In this respect, in this embodiment, the upper and lower wiring patterns 6a and 6b are arranged so as to be orthogonal to the central axis CA1 of the coil core 3 in a plan view, so that the inner side compared to the conventional example arranged obliquely. The connection distance between the metal pin 5a and the outer metal pin 5b can be shortened. That is, since the portion occupied by the upper and lower wiring patterns 6a and 6b having a high specific resistance in the entire length of the coil electrode 4 can be reduced, the coil characteristics can be improved.

  Further, the width W1 of each inner and outer metal pin 5a, 5b is formed to be approximately equal to or larger than the interval L1 in plan view of the upper and lower wiring patterns 6a, 6b to be connected. Even if the upper and lower wiring patterns 6a and 6b are arranged so as to be shifted in plan view, they can be easily connected. Further, by forming the inner and outer metal pins 5a and 5b so that the width W1 is substantially equal to or larger than the interval L1, each upper side having a high specific resistance in the entire length of the coil electrode 4 is formed. Since the portion occupied by the lower wiring patterns 6a and 6b can be reduced, the resistance value of the coil electrode 4 as a whole can be lowered.

  In addition, each upper wiring pattern 6a is arranged at a position that does not overlap any lower wiring pattern 6b in plan view, and therefore, parasitic capacitance generated between the upper wiring pattern 6a and the lower wiring pattern 6b is reduced. Can be reduced.

  Further, in the case of the metal pins 5a and 5b, it is easy to narrow the gap between the adjacent metal pins 5a and 5b as compared with the via conductor or the through-hole conductor that requires the formation of a through hole in the insulating layer 2. Therefore, the number of turns of the coil electrode 4 can be easily increased. Further, for example, as shown in FIG. 1, the cross-section of the metal pins 5a and 5b is made to be substantially oval or substantially rectangular so that the upper and lower wiring patterns 6a and 6b can be formed to the minimum gap, and each upper side The lower wiring patterns 6a and 6b can be connected. Further, since the metal pins 5a and 5b have a lower specific resistance than a via conductor or a through-hole conductor formed by filling a via hole with a conductive paste, the resistance value of the coil electrode 4 as a whole can be lowered. Therefore, for example, the coil component 1a having excellent coil characteristics such as the Q value can be provided.

(Modification of metal pin)
Next, modified examples of the metal pins 5a and 5b will be described with reference to FIGS. 3 and 4 are diagrams for explaining a modification example of the metal pin, each corresponding to FIG.

  In the above-described embodiment, the case where each of the metal pins 5a and 5b is formed in a columnar shape having an elliptical cross section has been described, but the shape of each of the metal pins 5a and 5b can be changed as appropriate. For example, as shown in FIG. 3, each metal pin 50a, 50b may be formed in an L shape. Moreover, as shown in FIG. 4, you may have a constriction in the length direction of each metal pin 51a, 51b. Even with these structures, both the upper and lower wiring patterns 6a and 6b to be connected can be easily connected even if they are shifted in plan view as in the first embodiment.

Second Embodiment
A coil component 1b according to a second embodiment of the present invention will be described with reference to FIG. FIG. 5 is a plan view of the coil component 1b.

  The coil component 1b according to this embodiment differs from the coil component 1a of the first embodiment described with reference to FIGS. 1 and 2 in that each metal pin 52a, 52b is a circle as shown in FIG. It is formed in a columnar shape. Since other configurations are the same as those of the first embodiment, the description thereof is omitted by attaching the same reference numerals.

  In this case, each metal pin 52a, 52b has an upper end surface connected to the upper wiring pattern 6a and a lower end surface connected to the lower wiring pattern 6b. Moreover, the diameter R of the cross section of each metal pin 52a, 52b is formed in the magnitude | size substantially equal to the space | interval L1 in planar view of the upper side and lower side wiring pattern 6a, 6b to connect.

  Thus, when each metal pin 52a, 52b is formed in a columnar shape, the same effect as the coil component 1a of the first embodiment can be obtained by adjusting the size of the diameter R of the cross section. .

<Third Embodiment>
A coil component 1c according to a third embodiment of the present invention will be described with reference to FIG. FIG. 6 is a plan view of the coil component 1c.

  The coil component 1c according to this embodiment differs from the coil component 1a of the first embodiment described with reference to FIGS. 1 and 2 in that the coil core 3 is formed in an annular shape as shown in FIG. That is, each metal pin 53a, 53b is formed in a prismatic shape having a horizontally long rectangular cross section. Since the other configuration is the same as that of the coil component 1a of the first embodiment, description thereof is omitted by attaching the same reference numerals.

  In this case, the upper and lower wiring patterns 6a and 6b are arranged so as to be orthogonal to the central axis CA2 of the coil core 3 parallel to the winding axis direction of the coil electrode 4 in plan view. Specifically, as shown in FIG. 6, the upper wiring pattern 6a is arranged to be orthogonal to the tangent TL of the intersection A between the upper wiring pattern 6a and the central axis CA2. The same applies to each lower wiring pattern 6b.

  Further, the size (longitudinal length) of the cross section of each metal pin 53a, 53b is adjusted in accordance with the interval in the plan view of the upper and lower wiring patterns 6a, 6b to be connected, as in the first embodiment. Has been.

  According to this configuration, when the coil core 3 is configured in an annular shape, the same effect as that of the coil component 1a of the first embodiment can be obtained.

<Fourth embodiment>
A coil component 1d according to a fourth embodiment of the present invention will be described with reference to FIGS. 7 is a plan view of the coil component 1d, and FIG. 8 is a plan view of the upper wiring pattern 6a of FIG.

  The coil component 1d according to this embodiment is different from the coil component 1a according to the first embodiment described with reference to FIGS. 1 and 2 as shown in FIG. The configuration of 6b is different and the shapes of the metal pins 54a and 54b are different. Since the other configuration is the same as that of the coil component 1a of the first embodiment, description thereof is omitted by attaching the same reference numerals.

  The upper and lower wiring patterns 6a and 6b are formed in an L shape in plan view. For example, as shown in FIG. 8, each upper wiring pattern 6a includes a linear main body 6a1 orthogonal to the direction of the central axis CA1 of the coil core 3, and one end connected to the other end of the main body 6a1. And a bent portion 6a2. One end of the main body 6a1 is connected to the upper end surface of the inner metal pin 54a, and the other end of the bent portion 6a2 is connected to the upper end surface of the outer metal pin 54b. Similarly, each lower wiring pattern 6b has a main body portion 6b1 and a bent portion 6b2, and is formed in an L shape.

  In this embodiment, each of the metal pins 54a and 54b is formed in a columnar shape, and the cross section thereof is smaller than that of the metal pins 5a and 5b of the first embodiment. Yes.

  The connection structure of the coil electrode 4 will be specifically described. The main body portion 6a1 of each upper wiring pattern 6a is disposed so as not to overlap the main body portion 6b1 of any lower wiring pattern 6b in plan view. The other end of the bent portion 6a2 of each upper wiring pattern 6a is disposed so as to overlap with one end of the main body portion 6b1 (one end not connected to the bent portion 6b2) of one lower wiring pattern 6b in plan view. When overlapped, both 6a and 6b are connected by the outer metal pin 54b. On the other hand, the other end of each bent portion 6b2 of each lower wiring pattern 6b overlaps with one end of the main body portion 6a1 of one upper wiring pattern 6a (the end not connected to the bent portion 6a2) in plan view. The two 6a and 6b are connected by the inner metal pin 54a at the overlapping position.

  According to this configuration, it is possible to reduce the overlap of each upper wiring pattern 6a and each lower wiring pattern 6b in plan view while making the metal pins 5a and 5b thinner. Further, by providing the bent portions 6a2 and 6b2 in the upper and lower wiring patterns 6a and 6b, it is possible to easily reduce the overlapping of the upper and lower wiring patterns 6a and 6b in plan view.

(Modified example of upper and lower wiring patterns)
Next, a modification of the upper and lower wiring patterns 6a and 6b of the coil component 1d will be described with reference to FIG. FIG. 9 is a partial plan view.

  In the above-described embodiment, the case where the upper and lower wiring patterns 6a and 6b are formed in an L shape has been described. However, the inner and outer metals that connect the upper and lower wiring patterns 6a and 6b, respectively. The pins 54a and 54b may be formed in a strip shape having substantially the same width W2 as the interval L2 in plan view.

  In this case, the upper and lower wiring patterns 6a and 6b to be connected are arranged so as to overlap in plan view. Then, the inner or outer metal pins 54a and 54b are disposed at the overlapped positions, and the wiring patterns 6a and 6b are connected by the inner or outer metal pins 54a and 54b.

  The present invention is not limited to the above-described embodiments, and various modifications other than those described above can be made without departing from the spirit of the invention. For example, in each of the above-described embodiments, the case where the coil core 3 has an annular shape has been described. However, the coil core 3 may be formed in a rod shape. The shape of the coil component in this case is substantially the same as the perspective view of the main part of the coil component 1a shown in FIGS.

  Further, the insulating layer 2 may be formed of a ceramic material, for example.

  In addition, the present invention can be widely applied to various coil components including an insulating layer in which a coil core is embedded and a coil electrode wound around the coil core.

1a to 1d Coil parts 2 Insulating layer 3 Coil core 4 Coil electrode 5a, 50a, 51a, 52a, 53a, 54a Inner metal pin (one side conductor)
5b, 50b, 51b, 52b, 53b, 54b Outer metal pin (other side conductor)
6a Upper wiring pattern (first wiring pattern)
6b Lower wiring pattern (second wiring pattern)
6a1, 6b1 body part 6a2, 6b2 bent part

Claims (5)

An insulating layer with a coil core embedded therein;
A coil electrode wound around the coil core,
The coil electrode is
A plurality of first wiring patterns having one end disposed on one side of the coil core and the other end disposed on the other side of the coil core and arranged on one main surface of the insulating layer;
One end is disposed on one side of the coil core and the other end is disposed on the other side of the coil core, and is arranged on the other main surface of the insulating layer so as to form a plurality of pairs with each of the first wiring patterns. A plurality of second wiring patterns;
A plurality of one-side conductors arranged on the one side of the coil core and connecting one end of each first wiring pattern and one end of the second wiring pattern paired with the first wiring pattern;
Arranged on the other side of the coil core to connect the other end of each of the first wiring patterns and the other end of the second wiring pattern adjacent to the second wiring pattern that forms a pair with the first wiring pattern A plurality of other side conductors,
The first wiring patterns and the second wiring patterns are arranged so as to be orthogonal to a central axis parallel to a winding axis direction of the coil electrode of the coil core in a plan view ,
Each of the one-side conductors and each of the other-side conductors have a width equal to a distance in plan view between the first wiring pattern and the second wiring pattern that form a pair, and contact with the first wiring pattern The coil component , wherein the position and the contact position with the second wiring pattern are shifted from each other in plan view .   An insulating layer with a coil core embedded therein;
  A coil electrode wound around the coil core,
  The coil electrode is
  A plurality of first wiring patterns having one end disposed on one side of the coil core and the other end disposed on the other side of the coil core and arranged on one main surface of the insulating layer;
  One end is disposed on one side of the coil core and the other end is disposed on the other side of the coil core, and is arranged on the other main surface of the insulating layer so as to form a plurality of pairs with each of the first wiring patterns. A plurality of second wiring patterns;
  A plurality of one-side conductors arranged on the one side of the coil core and connecting one end of each first wiring pattern and one end of the second wiring pattern paired with the first wiring pattern;
  Arranged on the other side of the coil core to connect the other end of each of the first wiring patterns and the other end of the second wiring pattern adjacent to the second wiring pattern that forms a pair with the first wiring pattern A plurality of other side conductors,
  The first wiring patterns and the second wiring patterns are arranged so as to be orthogonal to a central axis parallel to a winding axis direction of the coil electrode of the coil core in a plan view,
  Each of the one-side conductors and each of the other-side conductors has a width larger than a distance in plan view between the first wiring pattern and the second wiring pattern that form a pair, and the first wiring pattern The coil component, wherein the contact position and the contact position with the second wiring pattern are shifted from each other in plan view. 3. The coil component according to claim 1, wherein a specific resistance of each of the one side conductor and the other side conductor is smaller than a specific resistance of each of the first and second wiring patterns.
Each first respective wiring pattern, a coil component according to claim 1 or 3, characterized in that it is disposed in a position that does not overlap with any of the second wiring pattern in plan view. Each one side conductor and the respective other side conductor, a coil component according to any of claims 1 to 4, characterized in that it is formed by a metal pin.

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