Coil component

Patent metadata

Field	Value
Publication number	US-12322540-B2
Application number	US-202117478278-A
Country	US
Kind code	B2
Filing date	Sep 17, 2021
Priority date	Nov 3, 2020
Publication date	Jun 3, 2025
Grant date	Jun 3, 2025

Abstract

A coil component includes a body, a support substrate disposed in the body, a coil unit disposed on the support substrate to be perpendicular to a first surface of the body and including first and second lead-out portions exposed to first surface of the body and spaced apart from each other, first and second external electrodes disposed to be spaced apart from each other on the first surface of the body and connected to the first and second lead-out portions, respectively, a slit portion formed in a region of one surface of the body between the first and second external electrodes, and a slit insulating layer disposed in the slit portion.

First claim

What is claimed is:

1. A coil component comprising:
a body; a support substrate disposed in the body;
a coil unit disposed on the support substrate to be perpendicular to a first surface of the body and including first and second lead-out portions exposed to the first surface of the body and spaced apart from each other; first and second external electrodes disposed to be spaced apart from each other on the first surface of the body and connected to the first and second lead-out portions, respectively; and a slit portion formed in a region of the first surface of the body between the first and second external electrodes; and a slit insulating layer disposed in the slit portion, wherein each of the first and second external electrodes is disposed to be spaced apart from the slit portion, and each of the first and second external electrodes is spaced apart from the slit insulating layer.

2. The coil component of claim 1 , further comprising a slit insulating layer extends to contact the first surface, and the slit insulating layer corresponds to a shape of the slit portion.

3. The coil component of claim 1 , wherein
each of the first and second lead-out portions includes lead patterns and auxiliary lead patterns disposed on both surfaces of the support substrate facing each other.

4. The coil component of claim 3 , wherein
each of the first and second lead-out portions further includes a connection via connecting the lead pattern and the auxiliary lead pattern through the support substrate.

5. The coil component of claim 1 , wherein
the first and second external electrodes are disposed to be spaced apart from each other in a first direction on the first surface of the body, and
the first and second external electrodes are spaced apart from first and second edge portions of the first surface of the body facing each other in the first direction.

6. The coil component of claim 5 , wherein
the first and second external electrodes are spaced apart from third and fourth edge portions of the first surface of the body, and
the third and fourth edge portions of the first surface of the body connect the first and second edge portions, respectively.

7. The coil component of claim 6 , further comprising:
a surface insulating layer disposed between the first and second external electrodes and the first to fourth edge portions of the first surface of the body.

8. The coil component of claim 7 , wherein
the body further includes a second surface facing the first surface thereof, a first end surface and a second end surface connecting the first surface and the second surface of the body and facing each other, and a first side surface and a second side surface connecting the first end surface and the second end surface and facing each other, and the surface insulating layer is disposed in at least a portion of each of the second surface, the first side surface, the second side surface, the first end surface, and the second end surface of the body.

9. The coil component of claim 8 , wherein
the body includes a magnetic metal powder and an insulating resin, and
the surface insulating layer is formed on an exposed surface of the magnetic metal powder exposed to at least one of the surfaces of the body and includes a metal of the magnetic metal powder.

10. The coil component of claim 8 , wherein
the surface insulating layer includes an insulating resin.

11. The coil component of claim 1 , wherein
each of the first and second external electrodes includes a bonding layer in contact with the first and second lead-out portions and a plating layer formed on the bonding layer.

12. The coil component of claim 11 , wherein
the bonding layer is a conductive resin layer including a conductive power and an insulating resin.

13. A coil component comprising:
a support substrate having a first surface; a coil unit comprising a coil pattern having at least one turn and first and second lead-out portions spaced apart from each other, the coil unit being disposed on the support substrate; a body encapsulating the support substrate and the coil unit such that the first surface of the support substrate extends along a length-thickness plane of the body, the body having a mounting surface in a width-length plane perpendicular to the first surface of the support substrate, the mounting surface exposing a portion of the first and second lead-out portions; a notch disposed on the mounting surface of the body, recessed into the mounting surface in a thickness direction and between the exposed portion of first and second lead-out portions, the notch extending along a width direction; a filler insulating layer filling at least a portion of the notch and extending to the mounting surface of the body; and first and second external electrodes disposed on the mounting surface to be spaced apart by the notch and spaced apart from the notch, wherein each of the first and second external electrodes is spaced apart from the filler insulating layer.

14. The coil component of claim 13 , wherein the first and second external electrodes respectively contact the exposed portion of the first and second lead-out portions.

15. The coil component of claim 13 , wherein the first and second external electrodes are spaced apart from edges of body on the mounting surface.

16. The coil component of claim 13 , wherein the first and second external electrodes are disposed on the mounting surface in the thickness direction.

17. The coil component of claim 13 , wherein the coil pattern comprises a first coil pattern disposed on the first surface of the support substrate and a second coil pattern disposed on a second surface of the support substrate opposing the first surface in the width direction.

18. The coil component of claim 17 , wherein the first lead-out portion extends from an outer end of the first coil pattern and contacts the first external electrode,
the second lead-out portion extends from an outer end of the second coil pattern and contacts the second external electrode, and
inner ends of the first and coil patterns are connected by a via penetrating the support substrate.

19. The coil component of claim 17 , further comprising first and second auxiliary lead portions disposed on the support substrate respectively opposing the first and second lead-out portions and having a portion thereof exposed through the mounting surface.

20. The coil component of claim 19 , wherein the first and second auxiliary lead portions connect respectively to the first and second lead-out portions by connection vias penetrating the support substrate, and wherein the first and second external electrodes respectively contact the first and second auxiliary lead portions.

Assignees

• Samsung Electro Mech

Inventors

• Yeo Jeong Gu
• Shin Myoung Ki
• Hwang Ji Hoon
• Lee Young Il

Classifications

• H01F27/2852

  Construction of conductive connections, of leads · CPC title

• H01F27/292 Primary

  Surface mounted devices · CPC title

• H01F2017/002

  Details of via holes for interconnecting the layers · CPC title

• H01F27/022

  Encapsulation · CPC title

• H01F27/2804

  Printed windings · CPC title