Coil electronic component
A coil electronic component includes a support member and a plurality of insulating patterns supported by the support member. Each of the plurality of insulating patterns includes an innermost insulating pattern adjacent to a through-hole of the support member, an outermost insulating pattern on the opposing side of the insulating patterns, and a plurality of central insulating patterns between the innermost insulating pattern and the outermost insulating pattern. At least one of the plurality of central insulating patterns has its largest width at a lower surface thereof where it is in contact with the support member.
1. A coil electronic component comprising:
a body including a plurality of coil patterns, a plurality of insulating patterns between adjacent coil patterns, an insulation coating portion in contact with upper surfaces of the coil patterns, and a support member supporting the coil patterns and the insulating patterns; and
external electrodes on external surfaces of the body,
wherein the plurality of insulating patterns includes an outermost insulating pattern, an innermost insulating pattern, and a plurality of central insulating patterns between the outermost insulating pattern and the innermost insulating pattern,
at least one of the plurality of insulating patterns extends with a constant width over an entire thickness of the at least one insulating pattern, and one or more of the plurality of central insulating patterns has a variable width, in a cross-sectional view of a thickness direction,
where the variable width of the one or more central insulating patterns is larger in a lower portion thereof that is in contact with the support member than in an upper portion thereof disposed above the lower portion, and
wherein the at least one of the plurality of insulating patterns having the constant width and the one or more of the plurality of central insulating patterns having the variable width are alternately arranged on the support member in a winding direction.
2. The coil electronic component of claim 1 , wherein the plurality of coil patterns include a plurality of upper coil patterns on an upper surface of the support member and a plurality of lower coil patterns on a lower surface of the support member, and
the upper coil patterns and the lower coil patterns are electrically connected to each other by vias in the support member.
3. The coil electronic component of claim 1 , wherein the one or more central insulating patterns each include a change portion between the upper and lower portions thereof, and the change portions each have boundary surfaces in the change portions.
4. The coil electronic component of claim 3 , wherein a lower width of the one or more central insulating patterns below the boundary surfaces is larger than an upper width of the one or more central insulating patterns above the boundary surfaces.
5. The coil electronic component of claim 1 , wherein the insulation coating portion extends across upper surfaces of the plurality of insulating patterns.
6. The coil electronic component of claim 1 , wherein the one or more central insulating patterns each include a change portion between the upper and lower portions thereof, and an upper width of the one or more central insulating patterns is substantially constant above the change portions, and a lower width of the one or more central insulating patterns is substantially constant below the change portions.
7. The coil electronic component of claim 1 , wherein the plurality of insulating patterns are connected to each other to form an insulating wall having a plurality of openings, the one or more central insulating patterns each include a change portion between the upper and lower portions thereof, and the change portions in the central insulating patterns are intermittently arranged in the insulating wall.
8. A coil electronic component comprising:
a support member;
a plurality of coil patterns supported by the support member and connected to each other; and
insulating portions supported by the support member and coating side surfaces and upper surfaces of the coil patterns,
wherein side surface insulating portions coating the side surfaces of the coil patterns are configured integrally with upper surface insulating portions coating the upper surface of the coil patterns, and
the side surface insulating portions include one or more change portions, where the width of the side surface insulating portion changes so as to be largest at lower surfaces of the insulating portions where the side surface insulating portions are in contact with the support member, and one or more even portions, where the width of the side surface insulating portion is even over an entire thickness of the side surface insulating portion, and the one or more change portions and the one or more even portions are alternately arranged on the support member in a winding direction.
9. The coil electronic component of claim 8 , wherein the insulating portions include upper insulating portions on an upper surface of the support member and lower insulating portions on a lower surface of the support member opposing the upper surface, and
the change portions are in both of the upper insulating portions and the lower insulating portions.
10. The coil electronic component of claim 8 , wherein the change portions are arranged in straight line sections of a coil portion of the plurality of coil patterns.
11. The coil electronic component of claim 8 , further comprising a magnetic material encapsulating the insulating portions and the support member, wherein the magnetic material comprises a composite of magnetic particles and a resin.
12. The coil electronic component of claim 11 , wherein connecting surfaces that connect the side surface insulating portions to the upper surface insulating portions have a curved shape.
13. The coil electronic component of claim 8 , wherein the plurality of coil patterns include a plurality of upper coil patterns on an upper surface of the support member and a plurality of lower coil patterns on a lower surface of the support member opposing the upper surface, and the upper coil patterns and the lower coil patterns are electrically connected to each other by vias in the support member.
14. The coil electronic component of claim 13 , further comprising a first external electrode connected to one end portion of an outermost coil pattern among the upper coil patterns and a second external electrode connected to one end portion of an outermost coil pattern among the lower coil patterns.
15. A coil electronic component comprising:
a support member, including a through-hole;
a coil disposed on a surface of the support member, the coil having a coil shape extending around the through-hole, and the coil comprising a plurality of coil patterns connected to each other, where adjacent coil patterns are spaced apart from each other in a cross-sectional view extending in a thickness direction orthogonal to the surface of the support member;
a plurality of insulating layers including:
an innermost insulating pattern on an inner side surface of the coil adjacent to the through-hole;
an outermost insulating pattern on an outer side surface of the coil on an outer peripheral side of the coil; and
a plurality of central insulating patterns in between adjacent coil patterns of the coil, including:
one or more lower central insulating portions in contact with the support member and extending with a substantially constant first width in the thickness direction; and
upper central insulating portions above the lower central insulating portions and extending with a substantially constant second width in the thickness direction;
an insulation coating portion on upper surfaces of the coil patterns and on upper surfaces of the central insulating patterns;
a magnetic body filling the through-hole and encapsulating the coil; and
external electrodes on respective side surfaces of the magnetic body opposing each other in a length direction perpendicular to the thickness direction,
wherein at least one of the plurality of central insulating patterns extends with a constant width over an entire thickness of the at least one of the plurality of central insulating patterns in the thickness direction, and at least another one of the plurality of central insulating patterns has a variable width, in which the first width is larger than the second width, in the thickness direction.
16. The coil electronic component of claim 15 , wherein the innermost insulating pattern, the outermost insulating pattern, the plurality of central insulating patterns, and insulation coating portion are portions of an integrally configured insulation layer.
17. The coil electronic component of claim 15 , wherein the one or more lower central insulating portions comprises a plurality of lower central insulating portions intermittently arranged along the length direction.
18. The coil electronic component of claim 15 ,
wherein the plurality of central insulating patterns further include one or more change portions between the one or more lower central insulating portions and the upper central insulating portions, and
wherein the change portions are abrupt change portions where the lower central insulating portion is in contact with the upper central insulating portion.
19. A coil electronic component comprising:
a support member;
a plurality of coil patterns supported by the support member and connected to each other; and
insulating portions supported by the support member and coating side surfaces and upper surfaces of the coil patterns,
wherein a width of a lower surface of one or more of the plurality of coil patterns is smallest where the coil patterns are in contact with the support member, and
at least one of the plurality of coil patterns has a width that is smaller at a lower portion thereof in contact with the support member than at an upper portion thereof spaced away from the support member, and has a side surface that is orthogonal to the support member and is planar over an entire thickness of the at least one coil pattern in a direction orthogonal to the support member.
20. The coil electronic component of claim 19 , wherein the one or more of the plurality of coil patterns include a change portion where a width changes.
21. The coil electronic component of claim 20 , wherein a plurality of change portions, where the width of the one or more of the plurality of coil patterns changes, are intermittently arranged along the coil pattern.
22. The coil electronic component of claim 19 , wherein the coil patterns include upper coil patterns on an upper surface of the support member and lower coil patterns on a lower surface of the support member opposing the upper surface, and
change portions, where the width of the one or more of the plurality of coil patterns changes, are in both of the upper coil patterns and the lower coil patterns.