JP-7856074-B2 - Inductor components

JP7856074B2JP 7856074 B2JP7856074 B2JP 7856074B2JP-7856074-B2

Inventors

乾真規

Assignees

株式会社村田製作所

Dates

Publication Date: 20260511
Application Date: 20230919

Claims (3)

A rectangular parallelepiped body including a pair of end faces opposite each other in the length direction, a top and bottom face opposite each other in the height direction, and a pair of side faces opposite each other in the width direction, The internal wiring includes a coil that is provided inside the aforementioned body and is wound spirally along the coil axis, A first external electrode is electrically connected to one end of the internal wiring and provided on one of the pair of end faces, The device comprises a second external electrode electrically connected to the other end of the internal wiring and provided on the other end face of the pair of end faces, In a cross-section parallel to the coil axis direction and perpendicular to the direction in which the internal wiring extends, the internal wiring has four corners, and among the internal wiring, the internal wiring located at the furthest end in the direction parallel to the coil axis direction includes one in which the shape of the corner adjacent to the corner of the base body differs from the shape of the remaining three corners. In the aforementioned cross-section, the shape of the corner adjacent to the corner of the base body is a notched shape, a stepped shape, or a curved shape. The internal wiring comprises a first internal wiring located at one end in a direction parallel to the coil axis direction, a second internal wiring located at the other end, and a third internal wiring located between the first internal wiring and the second internal wiring. An inductor component in which, in the cross-section, the shape of the corner in the third internal wiring does not include any notched shape, stepped shape, or curved shape.
A rectangular parallelepiped body including a pair of end faces opposite each other in the length direction, a top and bottom face opposite each other in the height direction, and a pair of side faces opposite each other in the width direction, The internal wiring includes a coil that is provided inside the aforementioned body and is wound spirally along the coil axis, A first external electrode is electrically connected to one end of the internal wiring and provided on one of the pair of end faces, The device comprises a second external electrode electrically connected to the other end of the internal wiring and provided on the other end face of the pair of end faces, In a cross-section parallel to the coil axis direction and perpendicular to the direction in which the internal wiring extends, the internal wiring has four corners, and among the internal wiring, the internal wiring located at the furthest end in the direction parallel to the coil axis direction includes one in which the shape of the corner adjacent to the corner of the base body differs from the shape of the remaining three corners. In the aforementioned cross-section, the shape of the corner adjacent to the corner of the base body is a notched shape, a stepped shape, or a curved shape. An inductor component in which, in the cross-section, the corner adjacent to the corner of the base body has at least one corner such that the distance between it and the corner of the base body is less than or equal to the side gap of the product or 20 μm or less.
The inductor component according to claim 2, wherein, in the cross-section, each corner of the base body has at least two corners adjacent to the corner of the base body such that the distance between them and the corner of the base body is less than or equal to the side gap of the product or 20 μm or less.

Description

This invention relates to an inductor component. Patent Document 1 describes a device comprising a base body, a coil provided within the base body and wound spirally along an axis, and a first external electrode and a second external electrode provided on the base body and electrically connected to the coil, wherein the base body has a plurality of insulating layers stacked along the axis, the coil has a plurality of coil wirings stacked along the axis, and via wirings extending along the axis and connecting adjacent coil wirings in the axial direction, and each of the plurality of coil wirings is wound along a plane and electrically connected in series to form a spiral, and the plurality An inductor component is disclosed in which the coil wiring comprises a first coil wiring located on the one side in the direction parallel to the axis and connected to the first external electrode, and a second coil wiring located on the other side in the direction parallel to the axis and connected to the second external electrode, wherein the area of the one end face in the direction parallel to the axis of the via wiring is smaller than the area of the other end face in the direction parallel to the axis of the via wiring, and the thickness of the second coil wiring in the direction parallel to the axis is greater than the thickness of the first coil wiring in the direction parallel to the axis. Patent Document 2 discloses a laminated chip component comprising multiple stacked layers, wherein it has a conductor path formed by stacking three or more conductor layers, and in at least a portion of the conductor path, an outer conductor layer narrower than the intermediate conductor layer is formed above and below the intermediate conductor layer. Japanese Patent Publication No. 2022-128975Japanese Patent Publication No. 2003-257740 Figure 1 is a schematic perspective view showing an example of an inductor component according to Embodiment 1 of the present invention.Figure 2 is a schematic cross-sectional view showing an example of a cross-section along the line segment a1-a2 of the inductor component shown in Figure 1.Figure 3 is a schematic cross-sectional view showing an example of a cross-section along the line segment b1-b2 of the inductor component shown in Figure 1.Figure 4 is a schematic cross-sectional view showing an example of a corner of the main body and its vicinity in the inductor component shown in Figure 2 or Figure 3.Figure 5 is a schematic perspective view showing an example of an inductor component according to Embodiment 2 of the present invention.Figure 6 is a schematic cross-sectional view showing an example of a cross-section along the line segment a1-a2 of the inductor component shown in Figure 5.Figure 7 is a schematic cross-sectional view showing an example of a cross-section along the line segment b1-b2 of the inductor component shown in Figure 5.Figure 8 is a schematic perspective view showing an example of an inductor component according to Embodiment 3 of the present invention.Figure 9 is a schematic cross-sectional view showing an example of a cross-section along the line segment a1-a2 of the inductor component shown in Figure 8.Figure 10 is a schematic cross-sectional view showing an example of a cross-section along the line segment b1-b2 of the inductor component shown in Figure 9.Figure 11 is a schematic cross-sectional view showing an example of an inductor component according to Embodiment 4 of the present invention.Figure 12 is a schematic cross-sectional view showing an example of a corner of the main body and its vicinity in the inductor component shown in Figure 11. The inductor components of the present invention will be described below. However, the present invention is not limited to the configuration described below, and may be modified as appropriate without departing from the spirit of the invention. Furthermore, combinations of several of the preferred configurations described below also constitute the present invention. The embodiments described below are illustrative, and it goes without saying that partial substitution or combination of the configurations shown in different embodiments is possible. In Embodiment 2 and subsequent embodiments, descriptions of matters common to Embodiment 1 will be omitted, and the differences will be primarily explained. In particular, similar effects and benefits due to similar configurations will not be mentioned sequentially for each embodiment. In the following description, unless otherwise specified, each embodiment will simply be referred to as "the inductor component of the present invention." The following diagrams are schematic representations, and their dimensions, aspect ratios, and scales may differ from those of the actual product. In this specification, terms describing relationships between elements (e.g., "parallel," "perpendicular," "orthogonal," etc.) and terms describing the shapes of elements mean not only their literal,