Electronic component
By positioning the shield conductor between the connecting conductors of adjacent inductors without overlapping them, the electronic component prevents magnetic flux leakage and capacitance formation, maintaining performance.
Patent Information
- Application Number
- JP2024127823
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-08-02
- Publication Date
- 2026-02-16
AI Technical Summary
The provision of a shield conductor on an electronic component to prevent magnetic flux leakage leads to capacitance formation between the inductor and the shield conductor, causing performance degradation.
The shield conductor is positioned between the connecting conductors of adjacent inductors, avoiding overlap with the inductors and minimizing capacitance formation, while preventing magnetic flux leakage.
This configuration maintains the performance of the electronic component by preventing both magnetic flux leakage and capacitance formation, ensuring optimal operational characteristics.
Smart Images

Figure 2026025197000001_ABST
Abstract
Description
[Technical Field]
[0001] The present disclosure relates to electronic components. [Background technology]
[0002] Patent Document 1 discloses an electronic component comprising: a laminate having a first surface and a second surface and in which a plurality of dielectric layers are stacked; an input terminal, an output terminal, and a ground terminal arranged on the second surface of the laminate; a common electrode arranged on the first surface side of the laminate; a ground electrode connected to the ground terminal; a first resonator and a second resonator arranged in a layer between the common electrode and the ground electrode; a shield electrode arranged on the first surface side of the common electrode and overlapping the entire common electrode when viewed in a plane from the stacking direction of the laminate; a first ground via connecting the shield electrode and the ground electrode via the common electrode; and a second ground via connecting the shield electrode and the ground electrode directly without going through the common electrode. [Prior art documents] [Patent documents]
[0003] [Patent Document 1] Japanese Patent Publication No. 2024-23011 Summary of the Invention [Problem to be solved by the invention]
[0004] In electronic components, a shield conductor (shield electrode) is provided on the element body (laminate) to prevent magnetic flux and other elements from leaking outside the electronic component. This prevents the performance of the electronic component from deteriorating due to the relationship between magnetic flux and other elements leaking from the electronic component and an external shield. However, if a shield conductor is arranged to cover an inductor, a capacitance is formed between the inductor and the shield conductor. This can cause a deterioration in the performance of the electronic component.
[0005] An object of one aspect of the present disclosure is to provide an electronic component that can suppress deterioration in characteristics even when a shield conductor is provided on an element body. [Means for solving the problem]
[0006] (1) An electronic component according to one aspect of the present disclosure includes: an element body having a pair of end faces facing each other in a first direction and a main surface and a mounting surface facing each other in a second direction; a ground terminal disposed on the mounting surface of the element body; a shield conductor disposed near the main surface of the element body; a conductor electrically connecting the ground terminal and the shield conductor; and a first inductor and a second inductor disposed within the element body, the first inductor and the second inductor each having an axial direction in the first direction, the first inductor including the first conductor and the second conductor extending in the second direction and the main surface of the first conductor. the second inductor has a third conductor and a fourth conductor extending in the second direction, and a second connecting conductor connecting the end of the third conductor on the main surface side to the end of the fourth conductor on the main surface side, the first inductor and the second inductor being arranged adjacent to each other in the first direction, and the shielding conductor is arranged in a position closer to the main surface than the first connecting conductor and the second connecting conductor in the second direction, and is located at least between the first connecting conductor and the second connecting conductor when viewed from the second direction, and has a portion that does not overlap with the first connecting conductor or the second connecting conductor.
[0007] In an electronic component according to one aspect of the present disclosure, the shield conductor is located between at least the first connecting conductor and the second connecting conductor when viewed from the second direction. This allows the shield conductor to prevent magnetic flux and the like from leaking to the outside of the electronic component from between the first connecting conductor (first inductor) and the second connecting conductor (second inductor). Therefore, the electronic component can prevent performance degradation due to leakage of magnetic flux and the like to the outside. Furthermore, the electronic component has a portion that does not overlap with the first connecting conductor or the second connecting conductor when viewed from the second direction. In this way, the electronic component does not overlap with all of the first inductor and the second inductor disposed within the base body. Therefore, the electronic component can reduce the capacitance formed between the shield conductor and the first inductor or the second inductor. Therefore, the electronic component can prevent performance degradation due to capacitance formation.
[0008] (2) In the electronic component of (1) above, the shielding conductor may have a portion located between the first connecting conductor and the second connecting conductor and a portion overlapping the first connecting conductor or the second connecting conductor when viewed from the second direction. In this configuration, the shielding conductor has a portion overlapping the first connecting conductor or the second connecting conductor, which can further prevent magnetic flux and the like from leaking from between the first connecting conductor and the second connecting conductor to the outside of the electronic component.
[0009] (3) The electronic component according to (1) or (2) above further includes a third inductor disposed within the element body, the third inductor having an axial direction in the first direction. The third inductor includes a fifth conductor and a sixth conductor extending in the second direction, and a third connecting conductor connecting an end of the fifth conductor on the main surface side with an end of the sixth conductor on the main surface side. The shield conductor may not overlap the third connecting conductor when viewed from the second direction. In this manner, the electronic component does not overlap the third inductor among the first inductor, the second inductor, and the third inductor disposed within the element body. That is, the shield conductor does not overlap any of the inductors in the electronic component. Therefore, no capacitance is formed between the shield conductor and the third inductor in the electronic component. This prevents degradation of the electronic component's performance due to capacitance formation.
[0010] (4) In any one of the electronic components (1) to (3) above, the area of the shielding conductor may be equal to or less than half the area of the main surface. This configuration allows the shielding conductor to be configured so as not to overlap any of the inductors disposed within the element body.
[0011] (5) In any one of the electronic components described above in (1) to (4), the width of the shielding conductor may be greater than the widths of the first connecting conductor and the second connecting conductor. In this configuration, by ensuring the width of the shielding conductor, it is possible to prevent magnetic flux and the like from leaking out of the electronic component from between the first connecting conductor and the second connecting conductor.
[0012] (6) In the electronic component of any one of (1) to (5) above, the conductor may be disposed between the first connecting conductor and the second connecting conductor when viewed from the second direction.
[0013] (7) In the electronic component of any one of (1) to (6), the conductor and an end portion of at least one of the first conductor, the second conductor, the third conductor, and the fourth conductor on the mounting surface side may be electrically connected by a connecting conductor. With this configuration, it is possible to adjust the coupling between the first inductor and the second inductor.
[0014] (8) In the electronic component of (7) above, the connecting conductor may connect the mounting surface side ends of two of the first conductor, the second conductor, the third conductor, and the fourth conductor at the same height in the second direction, and the length in the second direction of two of the first conductor, the second conductor, the third conductor, and the fourth conductor connected to the connecting conductor may be shorter than the length in the second direction of two of the conductors not connected to the connecting conductor. With this configuration, it is possible to adjust the coupling between the first inductor and the second inductor while ensuring the inductance of the inductor formed by the conductors.
[0015] (9) An electronic component according to one aspect of the present disclosure includes: an element body having a pair of end faces facing each other in a first direction, and a main surface and a mounting surface facing each other in a second direction; a ground terminal disposed on the mounting surface of the element body; a shield conductor disposed near the main surface of the element body; a conductor electrically connecting the ground terminal and the shield conductor; and a first inductor, a second inductor, and a third inductor disposed within the element body, the first inductor, the second inductor, and the third inductor each having an axial direction in the first direction, the first inductor connecting an end of the first conductor on the main surface side to an end of the second conductor on the main surface side. the second inductor has a third conductor and a fourth conductor extending in the second direction, and a second connecting conductor connecting the end of the third conductor on the main surface side to the end of the fourth conductor on the main surface side; the third inductor has a fifth conductor and a sixth conductor extending in the second direction, and a third connecting conductor connecting the end of the fifth conductor on the main surface side to the end of the sixth conductor on the main surface side; the first inductor and the second inductor are arranged adjacent to each other in the first direction; the shielding conductor is arranged in a position closer to the main surface than the first connecting conductor, the second connecting conductor, and the third connecting conductor in the second direction, and is located at least between the first connecting conductor and the second connecting conductor when viewed from the second direction, and does not overlap with the third connecting conductor.
[0016] In an electronic component according to one aspect of the present disclosure, the shield conductor is located between at least the first connecting conductor and the second connecting conductor when viewed from the second direction. This allows the shield conductor to prevent magnetic flux and the like from leaking to the outside of the electronic component from between the first connecting conductor (first inductor) and the second connecting conductor (second inductor). Therefore, the electronic component can prevent performance degradation due to leakage of magnetic flux and the like to the outside. Furthermore, in the electronic component, the shield conductor does not overlap with the third connecting conductor (third inductor) when viewed from the second direction. Thus, in the electronic component, the shield conductor does not overlap with at least the third inductor among the first inductor, second inductor, and third inductor arranged within the base body. That is, in the electronic component, the shield conductor does not overlap with any of the inductors. Therefore, no capacitance is formed between the shield conductor and the third inductor in the electronic component. Therefore, the electronic component can prevent performance degradation due to capacitance formation. [Effects of the Invention]
[0017] According to one aspect of the present disclosure, even when a shield conductor is provided on an element body, deterioration in characteristics can be suppressed. [Brief explanation of the drawings]
[0018] [Figure 1] FIG. 1 is a transparent perspective view of an electronic component according to one embodiment. [Figure 2] FIG. 2 is a side view of the electronic component shown in FIG. [Figure 3] FIG. 3 is an end view of the electronic component shown in FIG. [Figure 4] FIG. 4 is an end view of the electronic component shown in FIG. [Figure 5] FIG. 5 is an exploded perspective view of the electronic component shown in FIG. [Figure 6] FIG. 6 is a view of the electronic component as seen from one main surface side. [Figure 7] FIG. 7 is an equivalent circuit diagram of the electronic component. DETAILED DESCRIPTION OF THE INVENTION
[0019] 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.
[0020] An electronic component according to one embodiment will be described with reference to Figures 1, 2, 3 and 4. Figure 1 is a transparent perspective view of the electronic component according to one embodiment. Figure 2 is a side view of the electronic component shown in Figure 1. Figures 3 and 4 are end views of the electronic component shown in Figure 1. As shown in Figures 1 to 4, the electronic component 1 includes an element body 2, a first terminal electrode 3, a second terminal electrode 4, a third terminal electrode 5, and a resonator 6. In Figures 1 to 4, the element body 2 is indicated by a two-dot chain line.
[0021] 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.
[0022] 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.
[0023] The main surface 2d is a mounting surface that faces another electronic device (not shown) when the electronic 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).
[0024] 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.
[0025] 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.
[0026] The element body 2 is formed by stacking multiple element body layers (insulator layers) 7 (see FIG. 5) 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 7 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.
[0027] The base layer 7 is made of, for example, a sintered ceramic green sheet containing a dielectric material, such as at least one selected from a BaTiO3-based material, a Ba(Ti,Zr)O3-based material, a (Ba,Ca)TiO3-based material, a glass material, or an alumina material.
[0028] The first terminal electrode 3, the second terminal electrode 4, and the third terminal electrode 5 are each provided on the element body 2. The first terminal electrode 3, the second terminal electrode 4, and the third terminal electrode 5 are each arranged on the main surface 2d of the element body 2. The first terminal electrode 3, the second terminal electrode 4, and the third terminal electrode 5 each have a rectangular shape. The first terminal electrode 3, the second terminal electrode 4, and the third terminal electrode 5 are each arranged so that each side extends along the first direction D1 or the third direction D3. In this embodiment, the length of the first terminal electrode 3 in the first direction D1 is longer than the length of the second terminal electrode 4 and the third terminal electrode 5 in the first direction D1.
[0029] 2, the first terminal electrode 3, the second terminal electrode 4, and the third terminal electrode 5 are arranged spaced apart from one another in the first direction D1. The first terminal electrode 3 is arranged in a central position in the first direction D1 on the main surface 2d. The second terminal electrode 4 is arranged in a position closer to the end face 2a on the main surface 2d. The third terminal electrode 5 is arranged in a position closer to the end face 2b on the main surface 2d. The first terminal electrode 3 is arranged between the second terminal electrode 4 and the third terminal electrode 5 in the first direction D1.
[0030] The first terminal electrode 3, the second terminal electrode 4, and the third terminal electrode 5 each protrude from the main surface 2d. That is, in this embodiment, the surfaces of the first terminal electrode 3, the second terminal electrode 4, and the third terminal electrode 5 are not flush with the main surface 2d. The first terminal electrode 3, the second terminal electrode 4, and the third terminal electrode 5 each are made of a conductive material (for example, Cu).
[0031] Each of the first terminal electrode 3, the second terminal electrode 4, and the third terminal electrode 5 may be provided with a plating layer (not shown) containing, for example, Ni, Sn, Au, etc. by electrolytic plating or electroless plating. The plating layer may include a Ni plating film covering the first terminal electrode 3, the second terminal electrode 4, and the third terminal electrode 5, and an Au plating film containing Au and covering the Ni plating film.
[0032] Fig. 5 is an exploded perspective view of the electronic component 1 shown in Fig. 1. As shown in Figs. 1 to 5, the resonator 6 includes a first conductor 10, a second conductor 11, a third conductor 12, a fourth conductor 13, a fifth conductor 14, a sixth conductor 15, a seventh conductor 16, an eighth conductor 17, a ninth conductor (conductor) 18, a first inductor conductor (first connecting conductor) 19, a second inductor conductor (second connecting conductor) 20, a third inductor conductor (third connecting conductor) 21, a fourth inductor conductor 22, a shield conductor 23, a connecting conductor 24, a capacitor conductor 25, a capacitor conductor 26, a capacitor conductor 27, a capacitor conductor 28, a capacitor conductor 29, a capacitor conductor 30, a capacitor conductor 31, a capacitor conductor 32, a capacitor conductor 33, a capacitor conductor 34, a capacitor conductor 35, a capacitor conductor 36, and a capacitor conductor 37.
[0033] The first conductor 10 extends along the second direction D2. The first conductor 10 may be composed of a plurality of via conductors B1. The first conductor 10 is disposed near the side surface 2e at a position closer to the center in the first direction D1 (a position closer to the end surface 2a than the center). The first conductor 10 electrically connects the first inductor conductor 19 and the connecting conductor 24.
[0034] The second conductor 11 extends along the second direction D2. The second conductor 11 may be composed of a plurality of via conductors B2. The length of the second conductor 11 in the second direction D2 is longer than that of the first conductor 10. In other words, the length of the first conductor 10 in the second direction D2 is shorter than that of the second conductor 11. The second conductor 11 is arranged near the side surface 2f in a position closer to the center in the first direction D1 (a position closer to the end face 2a than the center). The second conductor 11 is arranged in a position not facing the first conductor 10 in the third direction D3. The second conductor 11 is arranged in a position closer to the end face 2a than the first conductor 10 in the first direction D1. The second conductor 11 electrically connects the first inductor conductor 19 and the capacitor conductor 28.
[0035] The third conductor 12 extends along the second direction D2. The third conductor 12 may be composed of a plurality of via conductors B3. The third conductor 12 is disposed near the side surface 2e at a position closer to the center in the first direction D1 (a position closer to the end surface 2b than the center). The third conductor 12 electrically connects the second inductor conductor 20 and the connecting conductor 24.
[0036] The fourth conductor 13 extends along the second direction D2. The fourth conductor 13 may be composed of a plurality of via conductors B4. The length of the fourth conductor 13 in the second direction D2 is longer than that of the third conductor 12. In other words, the length of the third conductor 12 in the second direction D2 is shorter than that of the fourth conductor 13. The fourth conductor 13 is arranged closer to the side surface 2f in a position closer to the center in the first direction D1 (a position closer to the end face 2b than the center). The fourth conductor 13 is arranged in a position not facing the third conductor 12 in the third direction D3. The fourth conductor 13 is arranged in a position closer to the end face 2b than the third conductor 12 in the first direction D1. The fourth conductor 13 electrically connects the second inductor conductor 20 and the capacitor conductor 29.
[0037] The fifth conductor 14 extends along the second direction D2. The fifth conductor 14 may be formed of a plurality of via conductors B5. The fifth conductor 14 is disposed near the end face 2a and the side face 2e. The fifth conductor 14 electrically connects the third inductor conductor 21 and the capacitor conductor 26.
[0038] The sixth conductor 15 extends along the second direction D2. The sixth conductor 15 may be composed of a plurality of via conductors B6. The fifth conductor 14 is arranged in a position closer to the end face 2a and closer to the side face 2f. The sixth conductor 15 is arranged in a position not facing the fifth conductor 14 in the third direction D3. The sixth conductor 15 is arranged in a position closer to the end face 2a than the fifth conductor 14 in the first direction D1. The sixth conductor 15 electrically connects the third inductor conductor 21 and the capacitor conductor 34.
[0039] The seventh conductor 16 extends along the second direction D2. The seventh conductor 16 may be composed of a plurality of via conductors B7. The seventh conductor 16 is disposed near the end face 2b and near the side face 2e. The seventh conductor 16 electrically connects the fourth inductor conductor 22 and the capacitor conductor 27.
[0040] The eighth conductor 17 extends along the second direction D2. The eighth conductor 17 may be composed of a plurality of via conductors B8. The eighth conductor 17 is arranged in a position closer to the end face 2b and closer to the side face 2f. The eighth conductor 17 is arranged in a position not facing the seventh conductor 16 in the third direction D3. The eighth conductor 17 is arranged in a position closer to the end face 2b than the seventh conductor 16 in the first direction D1. The eighth conductor 17 electrically connects the fourth inductor conductor 22 and the capacitor conductor 31.
[0041] In this embodiment, the first conductors 10, the third conductors 12, the fifth conductors 14, and the seventh conductors 16 are arranged on the same straight line in the first direction D1. The second conductors 11, the fourth conductors 13, the sixth conductors 15, and the eighth conductors 17 are arranged on the same straight line in the first direction D1.
[0042] The ninth conductor 18 extends along the second direction D2. The ninth conductor 18 may be composed of a plurality of via conductors B9. The ninth conductor 18 is disposed at the center of the second direction D2. The ninth conductor 18 is disposed between the first conductor 10 and the third conductor 12 when viewed from the third direction D3.
[0043] The first inductor conductor 19 electrically connects the first conductor 10 and the second conductor 11. The first inductor conductor 19 extends along the third direction D3. The first inductor conductor 19 has a substantially rectangular shape when viewed from the second direction D2. The first inductor conductor 19 connects an end of the first conductor 10 on one side (the main surface 2c side) and an end of the second conductor 11 on one side. The end of the first conductor 10 is connected to an end of the first inductor conductor 19 on the side surface 2e side, at a position closer to the end surface 2b. The end of the second conductor 11 is connected to an end of the first inductor conductor 19 on the side surface 2f side, at a center position in the first direction D1.
[0044] The first inductor conductor 19 includes an inductor pattern 19A and an inductor pattern 19B. The inductor pattern 19A and the inductor pattern 19B have the same shape. The inductor pattern 19A and the inductor pattern 19B are disposed opposite to each other in the second direction D2.
[0045] The first conductor 10, the second conductor 11, and the first inductor conductor 19 constitute a first inductor L1 (see FIG. 7). The axial direction of the first inductor L1 constituted by the first conductor 10, the second conductor 11, and the first inductor conductor 19 is a first direction D1.
[0046] The second inductor conductor 20 electrically connects the third conductor 12 and the fourth conductor 13. The second inductor conductor 20 extends along the third direction D3. The second inductor conductor 20 has a substantially rectangular shape when viewed from the second direction D2. The second inductor conductor 20 connects one end of the third conductor 12 and one end of the fourth conductor 13. The end of the third conductor 12 is connected to the end of the second inductor conductor 20 on the side of the side surface 2e, at a position closer to the end face 2a. The end of the fourth conductor 13 is connected to the end of the second inductor conductor 20 on the side of the side surface 2f, at a center position in the first direction D1.
[0047] The second inductor conductor 20 includes an inductor pattern 20A and an inductor pattern 20B. The inductor pattern 20A and the inductor pattern 20B have the same shape. The inductor pattern 20A and the inductor pattern 20B are disposed opposite to each other in the second direction D2.
[0048] The third conductor 12, the fourth conductor 13, and the second inductor conductor 20 form a second inductor L2 (see FIG. 7). The axial direction of the second inductor L2 formed by the third conductor 12, the fourth conductor 13, and the second inductor conductor 20 is the first direction D1.
[0049] The third inductor conductor 21 electrically connects the fifth conductor 14 and the sixth conductor 15. The third inductor conductor 21 extends along the third direction D3. The third inductor conductor 21 has a substantially rectangular shape when viewed from the second direction D2. The third inductor conductor 21 connects one end of the fifth conductor 14 and one end of the sixth conductor 15. The end of the fifth conductor 14 is connected to a position closer to the end face 2b at the end of the third inductor conductor 21 on the side face 2e side. The end of the sixth conductor 15 is connected to a position closer to the end face 2a at the end of the third inductor conductor 21 on the side face 2f side. The end of the fifth conductor 14 and the end of the sixth conductor 15 are located diagonally across the third inductor conductor 21.
[0050] The third inductor conductor 21 includes an inductor pattern 21A and an inductor pattern 21B. The inductor pattern 21A and the inductor pattern 21B have the same shape. The inductor pattern 21A and the inductor pattern 21B are disposed opposite to each other in the second direction D2.
[0051] The fifth conductor 14, the sixth conductor 15, and the third inductor conductor 21 form a third inductor L3 (see FIG. 7). The axial direction of the third inductor L3 formed by the fifth conductor 14, the sixth conductor 15, and the third inductor conductor 21 is the first direction D1.
[0052] The fourth inductor conductor 22 electrically connects the seventh conductor 16 and the eighth conductor 17. The fourth inductor conductor 22 extends along the third direction D3. The fourth inductor conductor 22 has a substantially rectangular shape when viewed from the second direction D2. The fourth inductor conductor 22 connects one end of the seventh conductor 16 and one end of the eighth conductor 17. The end of the seventh conductor 16 is connected to a position closer to the end face 2a at the end of the side face 2e of the fourth inductor conductor 22. The end of the eighth conductor 17 is connected to a position closer to the end face 2b at the end of the side face 2f of the fourth inductor conductor 22. The end of the seventh conductor 16 and the end of the eighth conductor 17 are located diagonally across from the fourth inductor conductor 22.
[0053] The fourth inductor conductor 22 includes an inductor pattern 22A and an inductor pattern 22B. The inductor pattern 22A and the inductor pattern 22B have the same shape. The inductor pattern 22A and the inductor pattern 22B are disposed opposite to each other in the second direction D2.
[0054] The seventh conductor 16, the eighth conductor 17, and the fourth inductor conductor 22 constitute a fourth inductor L4 (see FIG. 7). The axial direction of the fourth inductor L4 constituted by the seventh conductor 16, the eighth conductor 17, and the fourth inductor conductor 22 is the first direction D1.
[0055] 6, in this embodiment, the width W1 of the first inductor conductor 19 is equal to the width W2 of the second inductor conductor 20. The width W3 of the third inductor conductor 21 is equal to the width W of the fourth inductor conductor 22. In this embodiment, the width W1 of the first inductor conductor 19 and the width W2 of the second inductor conductor 20 are greater than the width W3 of the third inductor conductor 21 and the width W4 of the fourth inductor conductor 22 (W1, W2 > W3, W4). The lengths of the first inductor conductor 19, the second inductor conductor 20, the third inductor conductor 21, and the fourth inductor conductor 22 in the third direction D3 are equal to each other.
[0056] The first inductor conductor 19 (first inductor L1 (see FIG. 7)) and the second inductor conductor 20 (second inductor L2 (see FIG. 7)) are arranged adjacent to each other in the first direction D1. The first inductor conductor 19 and the third inductor conductor 21 (third inductor L3 (see FIG. 7)) are arranged adjacent to each other in the first direction D1. The second inductor conductor 20 and the fourth inductor conductor 22 (fourth inductor L4 (see FIG. 7)) are arranged adjacent to each other in the first direction D1. The distance K1 between the first inductor conductor 19 and the second inductor conductor 20 is greater than the distance K2 between the first inductor conductor 19 and the third inductor conductor 21 and the distance K3 between the second inductor conductor 20 and the fourth inductor conductor 22 (K1 > K2, K3). The distance K2 between the first inductor conductor 19 and the third inductor conductor 21 is equal to the distance K3 between the second inductor conductor 20 and the fourth inductor conductor 22 (K2 = K3).
[0057] The shield conductor 23 has a substantially rectangular shape. The shield conductor 23 is disposed closer to the principal surface 2c (closer to the principal surface 2c) than the first inductor conductor 19, the second inductor conductor 20, the third inductor conductor 21, and the fourth inductor conductor 22. In other words, the distance between the shield conductor 23 and the principal surface 2c is shorter than the distance between the first inductor conductor 19, the second inductor conductor 20, the third inductor conductor 21, and the fourth inductor conductor 22 and the principal surface 2c, respectively.
[0058] In this embodiment, the width W5 of the shield conductor 23 is larger than the width W1 of the first inductor conductor 19 and the width W2 of the second inductor conductor 20 (W5>W1, W2). That is, the width W5 of the shield conductor 23 is larger than the width W3 of the third inductor conductor 21 and the width W of the fourth inductor conductor 22 (W5>W3, W4). The length of the shield conductor 23 in the third direction D3 is equal to the corresponding lengths of the first inductor conductor 19, the second inductor conductor 20, the third inductor conductor 21, and the fourth inductor conductor 22. The area of the shield conductor 23 (the area when viewed from the second direction D2) is equal to or smaller than half the area of the main surface 2c.
[0059] 6 , the shield conductor 23 is located between the first inductor conductor 19 and the second inductor conductor 20 when viewed from the second direction D2. In this embodiment, the shield conductor 23 is located between the first inductor conductor 19 and the second inductor conductor 20 and overlaps with the first inductor conductor 19 and the second inductor conductor 20 when viewed from the second direction D2. The shield conductor 23 overlaps with a portion of each of the first inductor conductor 19 and the second inductor conductor 20. That is, the shield conductor 23 has a portion located between the first inductor conductor 19 and the second inductor conductor 20 and a portion overlapping with the first inductor conductor 19 and the second inductor conductor 20 when viewed from the second direction D2.
[0060] The overlapping area between the shielding conductor 23 and the first inductor conductor 19 is smaller than the non-overlapping area between the shielding conductor 23 and the first inductor conductor 19 (the exposed area of the first inductor conductor 19 when viewed from the second direction D2). The overlapping area between the shielding conductor 23 and the second inductor conductor 20 is smaller than the non-overlapping area between the shielding conductor 23 and the second inductor conductor 20 (the exposed area of the second inductor conductor 20 when viewed from the second direction D2). The shielding conductor 23 does not overlap with the third inductor conductor 21 or the fourth inductor conductor 22 when viewed from the second direction D2. In other words, the shielding conductor 23 does not overlap with any of the inductors arranged in the element body 2 when viewed from the second direction D2.
[0061] As shown in FIG. 5 , the connecting conductor 24 connects the first conductor 10, the third conductor 12, and the ninth conductor 18. The connecting conductor 24 extends in the first direction D1. The connecting conductor 24 is connected to the other end of the first conductor 10 and the third conductor 12. The connecting conductor 24 connects the other end of the first conductor 10 and the third conductor 12 at the same height in the second direction D2. The connecting conductor 24 is connected to the other end of the ninth conductor 18 in the second direction D2 (a midpoint in the extending direction of the ninth conductor 18). As a result, the first conductor 10 and the third conductor 12 are shorter in length in the second direction D2 than the ninth conductor 18.
[0062] The capacitor conductor 25 faces a part of each of the capacitor conductors 26 and 27. The capacitor conductor 26 is connected to the other end (main surface 2d side) of the fifth conductor 14. The capacitor conductor 27 is connected to the other end of the seventh conductor 16.
[0063] The capacitor conductor 28 is connected to the other end of the second conductor 11. The capacitor conductor 29 is connected to the other end of the fourth conductor 13. The capacitor conductor 30 is connected to the other end of the fifth conductor 14. The capacitor conductor 31 is connected to the other end of the seventh conductor 16. The capacitor conductor 32 faces a part of each of the capacitor conductors 28 and 29, and a part of each of the capacitor conductors 36 and 27. The capacitor conductor 33 is connected to the other end of the ninth conductor 18.
[0064] The capacitor conductor 34 is connected to the other end of the sixth conductor 15. The capacitor conductor 34 is electrically connected to the second terminal electrode 4 through a via conductor. The capacitor conductor 35 is connected to the other end of the eighth conductor 17. The capacitor conductor 35 is electrically connected to the third terminal electrode 5 through a via conductor. The capacitor conductor 36 is connected to the other end of the second conductor 11. The capacitor conductor 37 is connected to the other end of the fourth conductor 13. The capacitor conductor 38 is connected to the other end of the ninth conductor 18. The capacitor conductor 38 faces parts of the capacitor conductors 30 and 31.
[0065] 7 is an equivalent circuit diagram of the electronic component 1 shown in Fig. 1. As shown in Fig. 7, the electronic component 1 includes a first port P1, a second port P2, a ground Gnd, a first inductor L1, a second inductor L2, a third inductor L3, a fourth inductor L4, a fifth inductor L5, a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7, an eighth capacitor C8, a ninth capacitor C9, a tenth capacitor C10, an eleventh capacitor C11, and a twelfth capacitor C12.
[0066] The first port P1 is constituted by the second terminal electrode 4. The second terminal electrode 4 is an input / output terminal. The second port P2 is constituted by the third terminal electrode 5. The third terminal electrode 5 is an input / output terminal. The ground Gnd is constituted by the first terminal electrode 3. The first terminal electrode 3 is a ground terminal.
[0067] The first inductor L1 is configured to include a first conductor 10, a second conductor 11, and a first inductor conductor 19. The second inductor L2 is configured to include a third conductor 12, a fourth conductor 13, and a second inductor conductor 20. The third inductor L3 is configured to include a fifth conductor 14, a sixth conductor 15, and a third inductor conductor 21. The fourth inductor L4 is configured to include a seventh conductor 16, an eighth conductor 17, and a fourth inductor conductor 22. The fifth inductor L5 is configured to include a ninth conductor 18.
[0068] The first capacitor C1 is configured to include a capacitor conductor 33 and a capacitor conductor 36. The second capacitor C2 is configured to include a capacitor conductor 33 and a capacitor conductor 37. The third capacitor C3 is configured to include a capacitor conductor 30 and a capacitor conductor 34. The fourth capacitor C4 is configured to include a capacitor conductor 31 and a capacitor conductor 35.
[0069] The fifth capacitor C5 is configured to include a capacitor conductor 30 and a capacitor conductor 38. The sixth capacitor C6 is configured to include a capacitor conductor 31 and a capacitor conductor 38. The seventh capacitor C7 is configured to include a capacitor conductor 25 and a capacitor conductor 26. The eighth capacitor C8 is configured to include a capacitor conductor 25 and a capacitor conductor 27.
[0070] The ninth capacitor C9 is configured to include a capacitor conductor 26 and a capacitor conductor 28. The tenth capacitor C10 is configured to include a capacitor conductor 32 and a capacitor conductor 36. The eleventh capacitor C11 is configured to include a capacitor conductor 27 and a capacitor conductor 29. The twelfth capacitor C12 is configured to include a capacitor conductor 27 and a capacitor conductor 29.
[0071] As described above, in the electronic component 1 according to this embodiment, the shield conductor 23 is located at least between the first inductor conductor 19 and the second inductor conductor 20 when viewed from the second direction D2. This allows the shield conductor 23 to prevent magnetic flux and other elements from leaking from between the first inductor conductor 19 (first inductor L1) and the second inductor conductor 20 (second inductor L2) to the outside of the electronic component 1. This prevents the electronic component 1 from experiencing degradation in its performance due to the leakage of magnetic flux and other elements to the outside. Furthermore, in the electronic component 1, the shield conductor 23 has a portion that does not overlap with the first inductor conductor 19 or the second inductor conductor 20 when viewed from the second direction D2. In this way, the shield conductor 23 does not overlap with the entire first inductor L1 or the entire second inductor L2 disposed within the base body 2. This reduces the capacitance formed between the shield conductor 23 and the first inductor L1 or the second inductor L2 in the electronic component 1. This prevents the electronic component 1 from experiencing degradation in its performance due to the formation of capacitance.
[0072] In the electronic component 1 according to this embodiment, the shield conductor 23 does not overlap with the third inductor conductor 21 (third inductor L3) and the fourth inductor conductor 22 (fourth inductor L4) when viewed from the second direction D2. Thus, in the electronic component 1, of the first inductor L1, second inductor, third inductor L3, and fourth inductor L4 arranged in the element body 2, the shield conductor 23 does not overlap with at least the third inductor L3 and the fourth inductor L4. That is, in the electronic component 1, the shield conductor 23 does not overlap with any of the inductors. Therefore, in the electronic component 1, no capacitance is formed between the shield conductor 23 and the third inductor L3 or the fourth inductor L4. Therefore, in the electronic component 1, degradation of characteristics due to the formation of capacitance can be suppressed.
[0073] In the electronic component 1 according to this embodiment, when viewed from the second direction D2, the shield conductor 23 has a portion located between the first inductor conductor 19 and the second inductor conductor 20, and a portion overlapping with the first inductor conductor 19 and the second inductor conductor 20. In this configuration, the shield conductor 23 has a portion overlapping with the first inductor conductor 19 and the second inductor conductor 20, and therefore the shield conductor 23 can further prevent magnetic flux and the like from leaking from between the first inductor conductor 19 and the second inductor conductor 20 to the outside of the electronic component 1.
[0074] In the electronic component 1 according to this embodiment, the connecting conductor 24 connects the other end of the first conductor 10 and the other end of the third conductor at the same height in the second direction D2. The lengths of the first conductor 10 and the third conductor 12 in the second direction D2 are shorter than the length of the ninth conductor 18 in the second direction D2. In this configuration, the coupling between the first inductor L1 and the second inductor L2 can be adjusted by changing the height position of the connecting conductor 24 in the second direction D2, that is, by changing the lengths of the first conductor 10 and the third conductor 12. Furthermore, by ensuring the length of the ninth conductor 18, the inductance of the fifth inductor L5 can be ensured.
[0075] 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.
[0076] In the above embodiment, the electronic component 1 includes the first inductor L1, the second inductor L2, the third inductor L3, and the fourth inductor L4. However, the electronic component 1 may include at least two inductors, the first inductor L1 and the second inductor L2.
[0077] In the above embodiment, an example has been described in which the shield conductor 23 has portions that overlap with the first inductor conductor 19 and the second inductor conductor 20. However, it is sufficient that the shield conductor 23 is located at least between the first inductor conductor 19 and the second inductor conductor 20 when viewed from the second direction D2.
[0078] In the above embodiment, an example has been described in which the other end of the first conductor 10, the other end of the third conductor 12, and the ninth conductor 18 are electrically connected by the connecting conductor 24. However, the first conductor 10, the third conductor 12, and the ninth conductor 18 do not have to be connected by the connecting conductor 24.
[0079] The embodiment has been described as an example in which the other end of the first conductor 10, the other end of the third conductor 12, and the ninth conductor 18 are electrically connected by the connecting conductor 24. However, it is sufficient that at least one of the first conductor 10, the second conductor 11, the third conductor 12, and the fourth conductor 13 is connected to the ninth conductor 18 by the connecting conductor 24.
[0080] In the above embodiment, an example has been described in which the other end of the first conductor 10 and the other end of the third conductor 12 are connected at the same height in the second direction D2 by the connecting conductor 24. However, the other end of the first conductor 10 and the other end of the third conductor 12 may be connected at different heights. [Explanation of symbols]
[0081] 1...electronic component, 2...element body, 2a, 2b...end face, 2c, 2d...main surface, 10...first conductor, 11...second conductor, 12...third conductor, 13...fourth conductor, 14...fifth conductor, 15...sixth conductor, 18...ninth conductor (conductor), 19...first inductor conductor (first connecting conductor), 20...second inductor conductor (second connecting conductor), 21...third inductor conductor (third connecting conductor), 23...shield conductor, 24...connecting conductor, D1...first direction, D2...second direction, L1...first inductor, L2...second inductor, L3...third inductor.
Claims
1. an element body having a pair of end faces facing each other in a first direction, and a main surface and a mounting surface facing each other in a second direction; a ground terminal disposed on the mounting surface of the element body; a shield conductor disposed near the main surface of the element body; a conductor electrically connecting the ground terminal and the shield conductor; a first inductor and a second inductor disposed within the element body, the first inductor and the second inductor having respective axial directions aligned with the first direction; the first inductor includes a first conductor and a second conductor extending in the second direction, and a first connecting conductor connecting an end of the first conductor on the main surface side and an end of the second conductor on the main surface side, the second inductor includes a third conductor and a fourth conductor extending in the second direction, and a second connecting conductor connecting an end of the third conductor on the main surface side and an end of the fourth conductor on the main surface side, the first inductor and the second inductor are disposed adjacent to each other in the first direction, The shield conductor is the first connecting conductor and the second connecting conductor are disposed closer to the main surface in the second direction, An electronic component that is located at least between the first connecting conductor and the second connecting conductor when viewed from the second direction and has a portion that does not overlap with the first connecting conductor or the second connecting conductor.
2. 2. The electronic component according to claim 1, wherein the shielding conductor has, when viewed from the second direction, a portion located between the first connecting conductor and the second connecting conductor, and a portion overlapping the first connecting conductor or the second connecting conductor.
3. a third inductor disposed within the element body, the third inductor having an axial direction aligned with the first direction; the third inductor includes a fifth conductor and a sixth conductor extending in the second direction, and a third connecting conductor connecting an end of the fifth conductor on the main surface side and an end of the sixth conductor on the main surface side, The electronic component according to claim 1 , wherein the shield conductor does not overlap the third connecting conductor when viewed from the second direction.
4. 3. The electronic component according to claim 1, wherein the area of the shield conductor is equal to or less than half the area of the main surface.
5. The electronic component according to claim 1 , wherein the width of the shield conductor is greater than the widths of the first connecting conductor and the second connecting conductor.
6. The electronic component according to claim 1 , wherein the conductor is disposed between the first connecting conductor and the second connecting conductor when viewed from the second direction.
7. 3. The electronic component according to claim 1, wherein the conductor and an end portion of at least one of the first conductor, the second conductor, the third conductor, and the fourth conductor on the mounting surface side are electrically connected by a connecting conductor.
8. the connecting conductor connects end portions of two of the first conductor, the second conductor, the third conductor, and the fourth conductor that are located on the mounting surface side at the same height position in the second direction, 7. The electronic component according to claim 6, wherein the length in the second direction of two of the first conductor, the second conductor, the third conductor, and the fourth conductor that are connected to the connection conductor is shorter than the length in the second direction of two of the conductors that are not connected to the connection conductor.
9. an element body having a pair of end faces facing each other in a first direction, and a main surface and a mounting surface facing each other in a second direction; a ground terminal disposed on the mounting surface of the element body; a shield conductor disposed near the main surface of the element body; a conductor electrically connecting the ground terminal and the shield conductor; a first inductor, a second inductor, and a third inductor that are arranged within the element body, the first inductor, the second inductor, and the third inductor, each with an axial direction that is the first direction; the first inductor includes a first conductor and a second conductor extending in the second direction, and a first connecting conductor connecting an end of the first conductor on the main surface side and an end of the second conductor on the main surface side, the second inductor includes a third conductor and a fourth conductor extending in the second direction, and a second connecting conductor connecting an end of the third conductor on the main surface side and an end of the fourth conductor on the main surface side, the third inductor includes a fifth conductor and a sixth conductor extending in the second direction, and a third connecting conductor connecting an end of the fifth conductor on the main surface side and an end of the sixth conductor on the main surface side, the first inductor and the second inductor are disposed adjacent to each other in the first direction, The shield conductor is the first connecting conductor, the second connecting conductor, and the third connecting conductor are disposed closer to the main surface in the second direction, An electronic component that is located at least between the first connecting conductor and the second connecting conductor when viewed from the second direction, and does not overlap with the third connecting conductor.
Citation Information
Patent Citations
Filter device and high-frequency front-end circuit equipped with the same
JP2024023011A