Multilayer coil components

Abstract

To provide a lamination coil component capable of improving reliability.SOLUTION: In a lamination coil component 1, a position of a border between a first portion 7a and a third portion 7c in a second wiring part 7 located near a lateral face 2e is located closer to an end surface 2b in a first direction D1 than a position of a border between the first portion 7a and the third portion 7c in the second wiring part 7 located near a lateral face 2f. A position of a border between a second portion 7b and the third portion 7c in the second wiring part 7 located near the lateral face 2f is located closer to an end surface 2a in the first direction D1 than a position of a border between the second portion 7b and the third portion 7c in the second wiring part 7 located near the lateral face 2e.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a laminated coil component. [Background technology]

[0002] A known conventional laminated coil component is, for example, that described in Patent Document 1. The laminated coil component described in Patent Document 1 includes an element body having a pair of end faces facing each other in a first direction, a mounting surface and a main surface facing each other in a second direction, and a pair of side surfaces facing each other in a third direction, a coil disposed within the element body, and a pair of terminal electrodes disposed on the mounting surface of the element body. The coil includes a plurality of first wiring portions disposed on the main surface side, a plurality of second wiring portions disposed on the mounting surface side, and a plurality of connecting portions extending in the second direction and connecting the first wiring portions and the second wiring portions. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2015-141945 Summary of the Invention [Problem to be solved by the invention]

[0004] In the laminated coil component, each of the second wiring portions includes, as viewed from the second direction, a first portion that includes an area overlapping with a corresponding connecting portion and is located near one end face, a second portion that includes an area overlapping with the corresponding connecting portion and is located near the other end face, and a third portion that connects the first portion and the second portion and is inclined with respect to the first direction. In this configuration, if each of the second wiring portions has the same shape, the pitch between the third portions of adjacent second wiring portions becomes smaller than the pitch between the first portions and the pitch between the second portions. This makes the wiring rules (line width and spacing) for the second wiring portions stricter. Stricter wiring rules for the second wiring portions can increase the risk of short circuits or breaks in the third portions of the second wiring portions. As a result, the characteristics of the laminated coil component deteriorate or the laminated coil component may no longer function.

[0005] An object of one aspect of the present invention is to provide a laminated coil component that can improve reliability. [Means for solving the problem]

[0006] A laminated coil component according to one aspect of the present invention includes: an element body having a pair of end faces opposing each other in a first direction, a mounting surface and a main surface opposing each other in a second direction, and a pair of side surfaces opposing each other in a third direction; a pair of terminal electrodes arranged on the mounting surface of the element body; a coil arranged within the element body and electrically connected to the pair of terminal electrodes; a first connecting conductor connecting one end of the coil to one of the terminal electrodes; and a second connecting conductor connecting the other end of the coil to the other terminal electrode, wherein the first connecting conductor is arranged closer to the one end face and the other side face, and the second connecting conductor is arranged closer to the other end face and the one side face, and the coil includes a plurality of first wiring portions arranged on the main surface side, a plurality of second wiring portions arranged on the mounting surface side, and a plurality of connecting conductors extending in the second direction and connecting the first wiring portions and the second wiring portions. each of the plurality of second wiring portions has a first portion including an area overlapping with a corresponding connection portion and located closer to one end face when viewed from the second direction, a second portion including an area overlapping with the corresponding connection portion and located closer to the other end face, and a third portion connecting the first portion and the second portion and inclined with respect to the first direction; in adjacent second wiring portions, when viewed from the second direction, the position of the boundary between the first portion and the third portion in the second wiring portion located closer to one side face is located closer to the other end face in the first direction than the position of the boundary between the first portion and the third portion in the second wiring portion located closer to the other side face; and the position of the boundary between the second portion and the third portion in the second wiring portion located closer to the other side face is located closer to one end face in the first direction than the position of the boundary between the second portion and the third portion in the second wiring portion located closer to one side face.

[0007] In a laminated coil component according to one aspect of the present invention, in adjacent second wiring portions, when viewed from the second direction, the first boundary between the first portion and the third portion in the second wiring portion located closer to one side surface is located closer to the other end surface in the first direction than the second boundary between the first portion and the third portion in the second wiring portion located closer to the other side surface. Also, the third boundary between the second portion and the third portion in the second wiring portion located closer to the other side surface is located closer to the one end surface in the first direction than the fourth boundary between the second portion and the third portion in the second wiring portion located closer to one side surface. Thus, in the laminated coil component, the boundary positions are different for each second wiring portion. This allows the pitch between the first portions, the pitch between the second portions, and the pitch between the third portions of adjacent second wiring portions to be the same. Therefore, the laminated coil component can avoid stricter wiring rules, thereby suppressing an increased risk of short circuits or breakage in the third portions of the second wiring portions. As a result, the reliability of the laminated coil component can be improved.

[0008] In one embodiment, each of the plurality of second wiring portions has two bending points at a boundary between the first portion and the third portion and two bending points at a boundary between the second portion and the third portion, when viewed from the second direction, the two bending points between the first portion and the third portion in the second wiring portion are located at different positions in the first direction and the two bending points between the second portion and the third portion are located at different positions in the first direction, and in adjacent second wiring portions, when viewed from the second direction, the two bending points between the first portion and the third portion in the second wiring portion located closer to one side surface are located closer to the other end surface in the first direction than the two bending points between the first portion and the third portion in the second wiring portion located closer to the other side surface, and the two bending points between the second portion and the third portion in the second wiring portion located closer to the one end surface in the first direction than the two bending points between the second portion and the third portion in the second wiring portion located closer to one side surface. In this configuration, the pitch between the first portions and the pitch between the second portions can be the same as the pitch between the third portions in adjacent second wiring portions.

[0009] In one embodiment, each of the plurality of second wiring portions has two bending points at a boundary between the first portion and the third portion and two bending points at a boundary between the second portion and the third portion, when viewed from the second direction, the two bending points between the first portion and the third portion in the second wiring portion are located at the same position in the first direction and the two bending points between the second portion and the third portion are located at the same position in the first direction, and in adjacent second wiring portions, when viewed from the second direction, the two bending points between the first portion and the third portion in the second wiring portion located closer to one side surface are located closer to the other end surface in the first direction than the two bending points between the first portion and the third portion in the second wiring portion located closer to the other side surface, and the two bending points between the second portion and the third portion in the second wiring portion located closer to the one end surface in the first direction than the two bending points between the second portion and the third portion in the second wiring portion located closer to one side surface. In this configuration, the pitch between the first portions and the pitch between the second portions can be the same as the pitch between the third portions in adjacent second wiring portions.

[0010] In one embodiment, each of the multiple second wiring portions has two bending points at the boundary between the first portion and the third portion, and two bending points at the boundary between the second portion and the third portion, when viewed from the second direction; in the second wiring portion, the two bending points between the first portion and the third portion are located at different positions in the first direction, and the two bending points between the second portion and the third portion are located at different positions in the first direction; in adjacent second wiring portions, when viewed from the second direction, of the two bending points between the first portion and the third portion in the second wiring portion located closer to one side, the bending point located closer to the other side may be located at the same position in the first direction as the bending point located closer to one side of the two bending points between the first portion and the third portion in the second wiring portion located closer to the other side; and of the two bending points between the second portion and the third portion in the second wiring portion located closer to the other side, the bending point located closer to one side may be located at the same position in the first direction as the bending point located closer to the other side of the two bending points between the second portion and the third portion in the second wiring portion located closer to one side. In this configuration, in adjacent second wiring portions, the pitch between the first portions and the pitch between the second portions can be made the same as the pitch between the third portions.

[0011] In one embodiment, in adjacent second wiring portions, when viewed from the second direction, a first distance between a side surface of a first portion of the second wiring portion located closer to one side surface and a side surface of the first portion of the second wiring portion located closer to the other side surface, a second distance between a side surface of a second portion of the second wiring portion located closer to one side surface and a side surface of the second portion of the second wiring portion located closer to the other side surface, and a third distance between a side surface of a third portion of the second wiring portion located closer to one side surface and a side surface of the third portion of the second wiring portion located closer to the other side surface may be the same. This configuration makes it possible to avoid stricter wiring rules, thereby suppressing an increased risk of short circuits or disconnections in the third portions of the second wiring portions. [Effects of the Invention]

[0012] According to one aspect of the present invention, reliability can be improved. [Brief explanation of the drawings]

[0013] [Figure 1] FIG. 1 is a perspective view of a laminated coil component according to one embodiment. [Figure 2] FIG. 2 is a view of the laminated coil component as seen from the mounting surface side. [Figure 3] FIG. 3 is a diagram illustrating the configuration of the second wiring portion. [Figure 4] FIG. 4 is an enlarged view of a part of the second wiring portion shown in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0014] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description of the drawings, the same or corresponding elements are designated by the same reference numerals, and redundant description will be omitted.

[0015] A laminated coil component according to the present embodiment will be described with reference to Fig. 1. Fig. 1 is a perspective view of a laminated coil component according to one embodiment. As shown in Fig. 1, the laminated coil component 1 includes an element body 2, a first terminal electrode 3, a second terminal electrode 4, a coil 5, a first connecting conductor 10 (see Fig. 2), and a second connecting conductor 11. In Fig. 1, for ease of explanation, the element body 2 is shown by a two-dot chain line, and the coil 5 is shown transparently. In Fig. 2, for ease of explanation, the coil 5 is also shown transparently, and the first terminal electrode 3 and second terminal electrode 4 are shown by dashed lines.

[0016] The element body 2 has a rectangular parallelepiped shape. The rectangular parallelepiped shape includes a rectangular parallelepiped shape with chamfered corners and ridges, and a rectangular parallelepiped shape with rounded corners and ridges. The element body 2 has, as its outer surfaces, a pair of end faces 2a and 2b, a pair of main faces 2c and 2d, and a pair of side faces 2e and 2f. The end faces 2a and 2b face each other. The main faces 2c and 2d face each other. The side faces 2e and 2f face each other. Hereinafter, the facing direction of the end faces 2a and 2b is referred to as a first direction D1, the facing direction of the main faces 2c and 2d is referred to as a second direction D2, and the facing direction of the side faces 2e and 2f is referred to as a third direction D3. The first direction D1, the second direction D2, and the third direction D3 are approximately perpendicular to each other.

[0017] The end faces 2a, 2b extend in the second direction D2 to connect the principal faces 2c, 2d. The end faces 2a, 2b also extend in the third direction D3 to connect the side faces 2e, 2f. The principal faces 2c, 2d extend in the first direction D1 to connect the end faces 2a, 2b. The principal faces 2c, 2d also extend in the third direction D3 to connect the side faces 2e, 2f. The side faces 2e, 2f extend in the first direction D1 to connect the end faces 2a, 2b. The side faces 2e, 2f also extend in the second direction D2 to connect the principal faces 2c, 2d.

[0018] The main surface 2d is a mounting surface that faces another electronic device (not shown) when the laminated coil component 1 is mounted on the other electronic device (for example, a circuit board or a laminated electronic component). The end surfaces 2a and 2b are surfaces that are continuous with the mounting surface (i.e., the main surface 2d).

[0019] The length of the element body 2 in the first direction D1 is longer than the length of the element body 2 in the second direction D2 and the length of the element body 2 in the third direction D3. The length of the element body 2 in the second direction D2 is shorter than the length of the element body 2 in the third direction D3. That is, in this embodiment, the end faces 2a, 2b, main faces 2c, 2d, and side faces 2e, 2f have a rectangular shape. The length of the element body 2 in the second direction D2 may be equal to the length of the element body 2 in the third direction D3, or may be longer than the length of the element body 2 in the third direction D3.

[0020] In this embodiment, "equivalent" does not only mean equal, but also may mean values ​​that include slight differences or manufacturing errors within a preset range. For example, if multiple values ​​are within a range of ±5% of the average value of the multiple values, the multiple values ​​are defined as equivalent.

[0021] The element body 2 is formed by stacking multiple element body layers (not shown) in the second direction D2. That is, the stacking direction of the element body 2 is the second direction D2. In an actual element body 2, the multiple element body layers may be integrated to the extent that the boundaries between the layers are not visible, or may be integrated so that the boundaries between the layers are visible.

[0022] The element layer is a resin layer. The material of the element layer includes at least one selected from the group consisting of liquid crystal polymer, polyimide resin, crystalline polystyrene, epoxy resin, acrylic resin, bismaleimide resin, and fluorine resin. The element layer includes a filler. The filler is, for example, an inorganic filler. An example of the inorganic filler is silica. Note that the element layer does not necessarily need to include a filler.

[0023] The base layer may be configured to include a magnetic material. The magnetic material of the base layer may include, for example, a Ni-Cu-Zn ferrite material, a Ni-Cu-Zn-Mg ferrite material, or a Ni-Cu ferrite material. The magnetic material of the base layer may include, for example, an Fe alloy. The base layer may include, for example, a non-magnetic material. The non-magnetic material of the base layer may include, for example, a glass ceramic material or a dielectric material.

[0024] The first terminal electrode 3 and the second terminal electrode 4 are each provided on the element body 2. The first terminal electrode 3 and the second terminal electrode 4 are each arranged on the main surface 2d of the element body 2. The first terminal electrode 3 and the second terminal electrode 4 are provided on the element body 2 so as to be spaced apart from each other in the first direction D1. Specifically, the first terminal electrode 3 is arranged on the end surface 2a side of the element body 2. The second terminal electrode 4 is arranged on the end surface 2b side of the element body 2.

[0025] Each of the first terminal electrode 3 and the second terminal electrode 4 has a rectangular shape (rectangular shape). Each of the first terminal electrode 3 and the second terminal electrode 4 is arranged so that each side extends along the first direction D1 or the third direction D3. The first terminal electrode 3 and the second terminal electrode 4 protrude from the main surface 2d. That is, in this embodiment, each surface of the first terminal electrode 3 and the second terminal electrode 4 is not flush with the main surface 2d. The first terminal electrode 3 and the second terminal electrode 4 are made of a conductive material (for example, Cu).

[0026] Each of the first terminal electrode 3 and the second terminal electrode 4 may be provided with a plating layer (not shown) containing, for example, Ni, Sn, Au, or the like by electrolytic plating or electroless plating. The plating layer may include, for example, a Ni plating film containing Ni and covering the first terminal electrode 3 and the second terminal electrode 4, and an Au plating film containing Au and covering the Ni plating film. The plating layers provided on each of the first terminal electrode 3 and the second terminal electrode 4 may protrude from the main surface 2d.

[0027] The coil 5 is disposed within the element body 2. The coil 5 has a plurality of first wiring portions 6, a plurality of second wiring portions 7, and a plurality of pillar portions (connecting portions) 8. The coil 5 is configured by electrically connecting the first wiring portions 6, the second wiring portions 7, and the pillar portions 8. The coil axis of the coil 5 is provided along the third direction D3. The plurality of first wiring portions 6, the plurality of second wiring portions 7, and the plurality of pillar portions 8 are configured of a conductive material (for example, Cu). The first wiring portions 6, the second wiring portions 7, and the pillar portions 8 are disposed apart from the end faces 2a, 2b, the main faces 2c, 2d, and the side faces 2e, 2f.

[0028] Each of the first wiring portions 6 is arranged on the principal surface 2c side of the element body 2. Each of the first wiring portions 6 extends along the first direction D1. Each of the first wiring portions 6 connects two pillar portions 8. The first wiring portion 6 is bridged across the two pillar portions 8. One end of each of the first wiring portions 6 in the extension direction (the end on the end surface 2a side) is connected to one end of each of the pillar portions 8 (the end on the principal surface 2c side). The other end of each of the first wiring portions 6 in the extension direction (the end on the end surface 2b side) is connected to one end of each of the pillar portions 8.

[0029] Each of the second wiring portions 7 is disposed on the main surface 2d (mounting surface) side of the element body 2. Each of the second wiring portions 7 extends in the first direction D1. Each of the second wiring portions 7 connects two pillar portions 8. The second wiring portion 7 is bridged across the two pillar portions 8. One end of the second wiring portion 7 in the extension direction (the end on the end surface 2a side) is connected to the other end of the pillar portion 8 (the end on the main surface 2d side). The other end of the second wiring portion 7 in the extension direction (the end on the end surface 2b side) is connected to the other end of the pillar portion 8. The number of the multiple second wiring portions 7 is one less than the number of the multiple first wiring portions 6. In other words, if there are n first wiring portions 6, there will be n-1 second wiring portions 7.

[0030] The second wiring portion 7 has a first portion 7a, a second portion 7b, and a third portion 7c. When viewed from the second direction D2, the first portion 7a includes a region overlapping with the corresponding pillar portion 8 and is located closer to the end face 2a. The first portion 7a extends in the first direction D1. When viewed from the second direction D2, the second portion 7b includes a region overlapping with the corresponding pillar portion 8 and is located closer to the end face 2b. The second portion 7b extends in the first direction D1. The third portion 7c connects the first portion 7a and the second portion 7b. When viewed from the second direction D2, the third portion 7c is inclined with respect to the first direction D1.

[0031] The pillar portions 8 are respectively arranged on the end face 2a side and the end face 2b side of the element body 2. Each of the pillar portions 8 extends along the second direction D2. The pillar portions 8 connect the first wiring portion 6 and the second wiring portion 7. One end of each pillar portion 8 is connected to one end and the other end of the first wiring portion 6. The other end of each pillar portion 8 is connected to one end and the other end of the second wiring portion 7.

[0032] The first connecting conductor 10 connects the first terminal electrode 3 and one end of the coil 5. The first connecting conductor 10 is connected to the other end of the pillar portion 8 of the coil 5. The first connecting conductor 10 is arranged closer to the end face (one end face) 2a and closer to the side face (other side face) 2f. The first connecting conductor 10 is made of a conductive material (for example, Cu). The second connecting conductor 11 connects the second terminal electrode 4 and the other end of the coil 5. The second connecting conductor 11 is connected to the other end of the pillar portion 8 of the coil 5. The second connecting conductor 11 is arranged closer to the end face (other end face) 2b and closer to the side face (one side face) 2e. The second connecting conductor 11 is made of a conductive material (for example, Cu).

[0033] Next, the configuration of the second wiring portion 7 of the coil 5 will be described in detail. FIG. 3 is a diagram illustrating the configuration of the second wiring portion 7. FIG. 3 illustrates the second wiring portion 7 as viewed from the main surface 2c. As illustrated in FIG. 3, in the laminated coil component 1, in adjacent second wiring portions 7, when viewed from the second direction D2, the position of the boundary B between the first portion 7a and the third portion 7c in the second wiring portion 7 located closer to the side surface 2e is closer to the end surface 2b in the first direction D1 than the position of the boundary B between the first portion 7a and the third portion 7c in the second wiring portion 7 located closer to the side surface 2f. In addition, in adjacent second wiring portions 7, when viewed from the second direction D2, the position of the boundary B between the second portion 7b and the third portion 7c in the second wiring portion 7 located closer to the side surface 2f is closer to the end surface 2a in the first direction D1 than the position of the boundary B between the second portion 7b and the third portion 7c in the second wiring portion 7 located closer to the side surface 2e. In FIG. 3, the boundary B is indicated by a dashed line.

[0034] The second wiring portion 7 will be described in more detail. In the following description, for convenience of explanation, the multiple (four) second wiring portions 7 will be referred to as second wiring portion 7A, second wiring portion 7B, second wiring portion 7C, and second wiring portion 7D.

[0035] 3, for example, in adjacent second wiring portions 7A and 7B, when viewed from the second direction D2, the position of the boundary B between the first portion 7a and the third portion 7c in the second wiring portion 7A located closer to the side surface 2e is located closer to the end surface 2b in the first direction D1 than the position of the boundary B between the first portion 7a and the third portion 7c in the second wiring portion 7B located closer to the side surface 2f. Also, in adjacent second wiring portions 7A and 7B, when viewed from the second direction D2, the position of the boundary B between the second portion 7b and the third portion 7c in the second wiring portion 7B located closer to the side surface 2f is located closer to the end surface 2a in the first direction D1 than the position of the boundary B between the second portion 7b and the third portion 7c in the second wiring portion 7A located closer to the side surface 2e.

[0036] Similarly, for example, in adjacent second wiring portions 7B and 7C, when viewed from the second direction D2, the position of the boundary B between the first portion 7a and the third portion 7c in the second wiring portion 7B located closer to the side surface 2e is located closer to the end surface 2b in the first direction D1 than the position of the boundary B between the first portion 7a and the third portion 7c in the second wiring portion 7C located closer to the side surface 2f. Also, in adjacent second wiring portions 7B and 7C, when viewed from the second direction D2, the position of the boundary B between the second portion 7b and the third portion 7c in the second wiring portion 7C located closer to the side surface 2f is located closer to the end surface 2a in the first direction D1 than the position of the boundary B between the second portion 7b and the third portion 7c in the second wiring portion 7B located closer to the side surface 2e.

[0037] Similarly, for example, in adjacent second wiring portions 7C and 7D, when viewed from the second direction D2, the position of the boundary B between the first portion 7a and the third portion 7c in second wiring portion 7C located closer to side surface 2e is located closer to end surface 2b in the first direction D1 than the position of the boundary B between the first portion 7a and the third portion 7c in second wiring portion 7D located closer to side surface 2f. Also, in adjacent second wiring portions 7C and 7D, when viewed from the second direction D2, the position of the boundary B between the second portion 7b and the third portion 7c in second wiring portion 7D located closer to side surface 2f is located closer to end surface 2a in the first direction D1 than the position of the boundary B between the second portion 7b and the third portion 7c in second wiring portion 7C located closer to side surface 2e.

[0038] FIG. 4 is an enlarged view of a portion of the second wiring portion 7 shown in FIG. 3. In the example shown in FIG. 4, the second wiring portion 7C and the second wiring portion 7D will be described as an example. As shown in FIG. 4, the second wiring portion 7C has bending points P1 and P2 at the boundary B between the first portion 7a and the third portion 7c. The bending point P1 is a connecting portion (joining portion) between the side surface of the first portion 7a located closer to the side surface 2e and the side surface of the third portion 7c in the second wiring portion 7C. The bending point P2 is a connecting portion between the side surface of the first portion 7a located closer to the side surface 2f and the side surface of the third portion 7c in the second wiring portion 7C. The straight line connecting the bending points P1 and P2 corresponds to the boundary B between the first portion 7a and the third portion 7c in the second wiring portion 7C.

[0039] When viewed from the second direction D2, the bending point P1 is located closer to the end face 2b in the first direction D1 than the bending point P2. In other words, the bending point P2 is located closer to the end face 2a in the first direction D1 than the bending point P1. The distance between the end face of the first portion 7a located closer to the end face 2a and the bending point P1 is longer than the distance between the end face and the bending point P2.

[0040] The second wiring portion 7D has bending points P3 and P4 at the boundary B between the first portion 7a and the third portion 7c. The bending point P3 is a connecting portion between the side surface of the first portion 7a located closer to the side surface 2e and the side surface of the third portion 7c in the second wiring portion 7D. The bending point P4 is a connecting portion between the side surface of the first portion 7a located closer to the side surface 2f and the side surface of the third portion 7c in the second wiring portion 7D. The straight line connecting the bending points P3 and P4 corresponds to the boundary B between the first portion 7a and the third portion 7c in the second wiring portion 7D.

[0041] When viewed from the second direction D2, the bending point P3 is located closer to the end face 2b in the first direction D1 than the bending point P4. In other words, the bending point P4 is located closer to the end face 2a in the first direction D1 than the bending point P3. The distance between the end face of the first portion 7a located closer to the end face 2a and the bending point P3 is longer than the distance between the end face and the bending point P4.

[0042] In the adjacent second wiring portions 7C and 7D, the bending points P1 and P2 are located closer to the end face 2b in the first direction D1 than the bending points P3 and P4. In other words, the bending points P3 and P4 are located closer to the end face 2a in the first direction D1 than the bending points P1 and P2.

[0043] The bending points P1, P2, P3, and P4 can be connected by straight lines. The straight lines are inclined with respect to the third direction D3 when viewed from the second direction D2. Each of the second wiring portions 7A to 7D has a bending point at a connecting portion between the first portion 7a and the third portion 7c. All of the bending points can be connected by straight lines.

[0044] Each of the second wiring portions 7A to 7D also has a bending point at the connecting portion between the second portion 7b and the third portion 7c. All bending points can be connected by straight lines. The straight line connecting the bending points between the first portion 7a and the third portion 7c in each of the second wiring portions 7A to 7D is parallel to the straight line connecting the bending points between the second portion 7b and the third portion 7c in each of the second wiring portions 7A to 7D.

[0045] 3 , in the laminated coil component 1, for example, in adjacent second wiring portions 7A and 7B, when viewed from the second direction D2, a first pitch (first distance) L1 between a side surface of the first portion 7a of the second wiring portion 7A that is closer to the side surface 2e and a side surface of the first portion 7a of the second wiring portion 7B that is closer to the side surface 2e, a second pitch (second distance) L2 between a side surface of the second portion 7b of the second wiring portion 7A that is closer to the side surface 2e and a side surface of the second portion 7b of the second wiring portion 7B that is closer to the side surface 2e, and a third pitch (third distance) L3 between a side surface of the third portion 7c of the second wiring portion 7A that is closer to the side surface 2e and a side surface of the third portion 7c of the second wiring portion 7B that is closer to the side surface 2e are the same (L1 = L2 = L3). The first pitch L1, the second pitch L2, and the third pitch L3 are the shortest distances.

[0046] The laminated coil component 1 can be manufactured, for example, as follows. The element body 2 can be formed by laminating sheets that constitute element body layers. The coil 5 (first wiring portion 6, second wiring portion 7, pillar portion 8), first connecting conductors 10, and second connecting conductors 11 can be manufactured using a photolithography method. The "photolithography method" is not limited to any particular type of mask, as long as it processes a layer containing a photosensitive material into a desired pattern by exposing and developing it.

[0047] As described above, in the laminated coil component 1 according to the present embodiment, in adjacent second wiring portions 7, when viewed from the second direction D2, the position of the boundary B between the first portion 7a and the third portion 7c in the second wiring portion 7 located closer to the side surface 2e is located closer to the end surface 2b in the first direction D1 than the position of the boundary B between the first portion 7a and the third portion 7c in the second wiring portion 7 located closer to the side surface 2f. Also, in the laminated coil component 1, in adjacent second wiring portions 7, when viewed from the second direction D2, the position of the boundary B between the second portion 7b and the third portion 7c in the second wiring portion 7 located closer to the side surface 2f is located closer to the end surface 2a in the first direction D1 than the position of the boundary B between the second portion 7b and the third portion 7c in the second wiring portion 7 located closer to the side surface 2e.

[0048] In this way, in the laminated coil component 1, the position of the boundary B is changed for each second wiring portion 7. As a result, in the laminated coil component 1, the first pitch L1 between the first portions 7a, the second pitch L2 between the second portions 7b, and the third pitch L3 between the third portions 7c in adjacent second wiring portions 7 can be made the same (L1 = L2 = L3). Therefore, in the laminated coil component 1, it is possible to avoid stricter wiring rules, and to suppress an increased risk of short circuits or breakage in the third portions 7c of the second wiring portions 7. As a result, the reliability of the laminated coil component 1 can be improved.

[0049] In the laminated coil component 1 according to this embodiment, each of the multiple second wiring portions 7 has two bending points at the boundary between the first portion 7a and the third portion 7c and two bending points at the boundary between the second portion 7b and the third portion 7c, as viewed from the second direction D2. In the laminated coil component 1, in the second wiring portion 7 located closer to the side surface 2e, the two bending points between the first portion 7a and the third portion 7c are located at different positions in the first direction D1, and the two bending points between the second portion 7b and the third portion 7c are located at different positions in the first direction D1. In the laminated coil component 1, in the second wiring portion 7 located closer to the side surface 2f, the two bending points between the first portion 7a and the third portion 7c are located at different positions in the first direction D1, and the two bending points between the second portion 7b and the third portion 7c are located at different positions in the first direction D1. In the laminated coil component, in adjacent second wiring portions 7, when viewed from the second direction D2, the two bending points between the first portion 7a and the third portion 7c in the second wiring portion 7 located closer to the side surface 2e are located closer to the end surface 2b in the first direction D1 than the two bending points between the first portion 7a and the third portion 7c in the second wiring portion 7 located closer to the side surface 2f, and the two bending points between the second portion 7b and the third portion 7c in the second wiring portion 7 located closer to the side surface 2e are located closer to the end surface 2a in the first direction D1 than the two bending points between the second portion 7b and the third portion 7c in the second wiring portion 7 located closer to the side surface 2f. With this configuration, in adjacent second wiring portions 7, the first pitch L1 between the first portions 7a, the second pitch L2 between the second portions 7b, and the third pitch L3 between the third portions 7c can be made the same (L1 = L2 = L3).

[0050] Although the embodiments of the present invention have been described above, the present invention is not necessarily limited to the above-described embodiments, and various modifications are possible without departing from the spirit of the present invention.

[0051] In the above embodiment, as shown in Figure 4, when viewed from the second direction D2, the bending point P1 is located closer to the end face 2b in the first direction D1 than the bending point P2, and the bending point P3 is located closer to the end face 2b in the first direction D1 than the bending point P4, and in the adjacent second wiring portion 7C and second wiring portion 7D, the bending point P1 and the bending point P2 are located closer to the end face 2b in the first direction D1 than the bending point P3 and the bending point P4.

[0052] However, the bending point P1 and the bending point P2 may be located at the same position in the first direction D1 (the straight line connecting the bending point P1 and the bending point P2 is approximately parallel to the third direction D3), the bending point P3 and the bending point P4 may be located at the same position in the first direction D1 (the straight line connecting the bending point P3 and the bending point P4 is approximately parallel to the third direction D3), and in the adjacent second wiring portion 7C and the second wiring portion 7D, the bending point P1 and the bending point P2 may be located closer to the end face 2b in the first direction D1 than the bending point P3 and the bending point P4. Even in this configuration, in the adjacent second wiring portion 7, the first pitch L1 between the first portions 7a, the second pitch L2 between the second portions 7b, and the third pitch L3 between the third portions 7c can be made the same (L1 = L2 = L3).

[0053] Furthermore, bending point P1 may be located closer to end face 2b in the first direction D1 than bending point P2, and bending point P3 may be located closer to end face 2b in the first direction D1 than bending point P4, and bending point P2 and bending point P3 may be located at the same position in the first direction D1 in adjacent second wiring portions 7C and 7D. Also in this configuration, in adjacent second wiring portions 7, the first pitch L1 between the first portions 7a, the second pitch L2 between the second portions 7b, and the third pitch L3 between the third portions 7c can be made the same (L1 = L2 = L3).

[0054] In the above embodiment, an example has been described in which the first terminal electrode 3 and the second terminal electrode 4 protrude beyond the main surface 2d. However, the first terminal electrode 3 and the second terminal electrode 4 may be embedded in the element body 2. That is, the first terminal electrode 3 and the second terminal electrode 4 may be provided substantially flush with the main surface 2d. In this configuration, the plating layers provided on the first terminal electrode 3 and the second terminal electrode 4 may protrude beyond the main surface 2d. [Explanation of symbols]

[0055] 1... Laminated coil component, 2... Element body, 2a, 2b... End surface, 2c, 2d... Main surface, 2e, 2f... Side surface, 3... First terminal electrode, 4... Second terminal electrode, 5... Coil, 6... First wiring part, 7,7A,7B,7C,7D... Second wiring part, 7a... First part, 7b... Second part, 7c... Third part, 8 ...Pillar part (connection part), 10...First connection conductor, 11...Second connection conductor, B...Boundary, D1...First direction, D2...Second direction, D3...Third direction, L1...First pitch (first distance), L2...Second pitch (second distance), L3...Third pitch (third distance), P1, P2, P3, P4...Bending point.

Claims

1. an element body having a pair of end faces facing each other in a first direction, a mounting surface and a main surface facing each other in a second direction, and a pair of side faces facing each other in a third direction; a pair of terminal electrodes disposed on the mounting surface of the element body; a coil disposed within the element body and electrically connected to the pair of terminal electrodes; a first connecting conductor connecting one end of the coil to one of the terminal electrodes, and a second connecting conductor connecting the other end of the coil to the other of the terminal electrodes, the first connection conductor is disposed near one of the end faces and near the other of the side faces, the second connection conductor is disposed closer to the other end face and closer to one of the side faces, the coil includes a plurality of first wiring portions arranged on the main surface side, a plurality of second wiring portions arranged on the mounting surface side, and a plurality of connection portions extending in the second direction and connecting the first wiring portions and the second wiring portions, When viewed from the second direction, each of the plurality of second wiring portions has a first portion including an area overlapping the corresponding connection portion and positioned closer to one of the end faces; a second portion including an area overlapping the corresponding connection portion and positioned closer to the other end face; a linear third portion connecting the first portion and the second portion and inclined with respect to the first direction, In the second wiring portions adjacent to each other, when viewed from the second direction, a position of a boundary between the first portion and the third portion in the second wiring portion located closer to one of the side surfaces is located closer to the other end face in the first direction than a position of a boundary between the first portion and the third portion in the second wiring portion located closer to the other side surface; a boundary between the second portion and the third portion in the second wiring portion located closer to the other side surface is located closer to one of the end faces in the first direction than a boundary between the second portion and the third portion in the second wiring portion located closer to one of the side surfaces.

2. each of the plurality of second wiring portions has two bending points at the boundary between the first portion and the third portion, and two bending points at the boundary between the second portion and the third portion, when viewed from the second direction; in the second wiring portion, the two bending points of the first portion and the third portion are located at different positions in the first direction, and the two bending points of the second portion and the third portion are located at different positions in the first direction, In the adjacent second wiring portions, when viewed from the second direction, the two bending points between the first portion and the third portion of the second wiring portion located closer to one of the side surfaces are located closer to the other end face in the first direction than the two bending points between the first portion and the third portion of the second wiring portion located closer to the other side surface; and 2. The laminated coil component according to claim 1, wherein the two bending points between the second portion and the third portion in the second wiring portion located closer to the other side surface are located closer to the one end face in the first direction than the two bending points between the second portion and the third portion in the second wiring portion located closer to one of the side surfaces.

3. each of the plurality of second wiring portions has two bending points at the boundary between the first portion and the third portion, and two bending points at the boundary between the second portion and the third portion, when viewed from the second direction; in the second wiring portion, the two bending points of the first portion and the third portion are located at the same position in the first direction, and the two bending points of the second portion and the third portion are located at the same position in the first direction, In the adjacent second wiring portions, when viewed from the second direction, the two bending points between the first portion and the third portion of the second wiring portion located closer to one of the side surfaces are located closer to the other end face in the first direction than the two bending points between the first portion and the third portion of the second wiring portion located closer to the other side surface; and 2. The laminated coil component according to claim 1, wherein the two bending points between the second portion and the third portion in the second wiring portion located closer to the other side surface are located closer to the one end face in the first direction than the two bending points between the second portion and the third portion in the second wiring portion located closer to one of the side surfaces.

4. each of the plurality of second wiring portions has two bending points at the boundary between the first portion and the third portion, and two bending points at the boundary between the second portion and the third portion, when viewed from the second direction; in the second wiring portion, the two bending points of the first portion and the third portion are located at different positions in the first direction, and the two bending points of the second portion and the third portion are located at different positions in the first direction, In the adjacent second wiring portions, when viewed from the second direction, of the two bending points between the first portion and the third portion in the second wiring portion located closer to one of the side surfaces, the bending point located closer to the other side surface is located at the same position in the first direction as the bending point located closer to one of the side surfaces of the two bending points between the first portion and the third portion in the second wiring portion located closer to the other side surface, 2. The laminated coil component according to claim 1, wherein, of the two bend points between the second portion and the third portion in the second wiring portion located closer to the other side surface, the bend point located closer to one of the side surfaces is located at the same position in the first direction as the bend point located closer to the other side surface of the two bend points between the second portion and the third portion in the second wiring portion located closer to one of the side surfaces.

5. In the adjacent second wiring portions, when viewed from the second direction, a first distance between a side surface of the portion of the second wiring portion located near one of the side surfaces and a side surface of the portion of the second wiring portion located near the other side surface; a second distance between a side surface of the second portion of the second wiring portion located near one of the side surfaces and a side surface of the second portion of the second wiring portion located near the other side surface, the side surface being located near the one of the side surfaces; and 5. The laminated coil component according to claim 1, wherein a third distance between a side surface of the third portion of the second wiring portion located closer to one of the side surfaces and a side surface of the third portion of the second wiring portion located closer to the other side surface is the same.

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