Coil component and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-9899136-B2
Application number	US-201615395075-A
Country	US
Kind code	B2
Filing date	Dec 30, 2016
Priority date	May 13, 2016
Publication date	Feb 20, 2018
Grant date	Feb 20, 2018

Abstract

A coil component includes a body portion, a coil portion, and an electrode portion. The body portion includes a magnetic material, the coil portion is disposed in the body portion, and the electrode portion is disposed on the body portion and electrically connected to the coil portion. The coil portion includes a first coil layer in which a plurality of conductors having a planar spiral shape are stacked, a second coil layer in which a plurality of conductors having a planar spiral shape are stacked, and a first bump disposed between the first and second coil layers to electrically connect the first and second coil layers to each other. The first coil layer and the second coil layer are electrically connected to each other through the first bump to form a single coil having coil turns adjacent to each other in horizontal and vertical directions.

First claim

What is claimed is:

1. A coil component comprising:
a body portion including a magnetic material;
a coil portion disposed in the body portion; and
an electrode portion disposed on the body portion and electrically connected to the coil portion,
wherein the coil portion includes:
a first coil layer in which a plurality of conductors having a planar spiral shape are stacked;
a second coil layer in which a plurality of conductors having a planar spiral shape are stacked; and
a first bump disposed between the first and second coil layers to electrically connect the first and second coil layers to each other, and

the first coil layer and the second coil layer are electrically connected to each other through the first bump to form a single coil having coil turns adjacent to each other in horizontal and vertical directions.

2. The coil component of claim 1 , wherein the first coil layer and the second coil layer include respective first conductors, second conductors, and third conductors disposed between the respective first conductors and the respective second conductors to connect the respective first conductors and the respective second conductors to each other, respectively, and
line widths of the first conductors and the second conductors are wider than those of the third conductors.

3. The coil component of claim 2 , wherein each of the first conductors, second conductors, and third conductors of the first coil layer and the second coil layer have a planar spiral shape.

4. The coil component of claim 2 , wherein the coil portion further includes:
a first resin layer in which the first conductor of the first coil layer and the first conductor of the second coil layer are embedded;
a first insulating layer disposed between the first conductor and the second conductor of the first coil layer; and
a second insulating layer disposed between the first conductor and the second conductor of the second coil layer,
the first bump extends through the first resin layer between the first conductor of the first coil layer and the first conductor of the second coil layer,
the third conductor of the first coil layer extends through the first insulating layer, and
the third conductor of the second coil layer extends through the second insulating layer.

5. The coil component of claim 4 , wherein the first resin layer has a thickness greater than thicknesses of the first insulating layer and the second insulating layer.

6. The coil component of claim 4 , wherein the first resin layer includes a photoimageable dielectric (PID) or a curable insulating material containing a magnetic filler.

7. The coil component of claim 4 , wherein the first insulating layer and the second insulating layer both include photoimageable dielectrics (PIDs).

8. The coil component of claim 4 , wherein the first bump includes an intermetallic compound (IMC).

9. The coil component of claim 1 , wherein the first coil layer and the second coil layer include respective first conductors, second conductors, third conductors disposed between the respective first conductors and the respective second conductors to connect the respective first conductors and the respective second conductors to each other, and fourth conductors disposed on the respective second conductors and directly connected to the second conductors, respectively, and
line widths of the first conductors and the second conductors are wider than line widths of the third conductors.

10. The coil component of claim 9 , wherein the coil portion further includes:
a first resin layer in which the first conductor of the first coil layer and the first conductor of the second coil layer are embedded;
a second resin layer in which the second conductor of the first coil layer is embedded;
a third resin layer in which the second conductor of the second coil layer is embedded;
a first insulating layer disposed between the first resin layer and the second resin layer; and
a second insulating layer disposed between the first resin layer and the third resin layer,
the first bump extends through the first resin layer between the first conductor of the first coil layer and the first conductor of the second coil layer,
the third conductor of the first coil layer extends through the first insulating layer, and
the third conductor of the second coil layer extends through the second insulating layer.

11. The coil component of claim 1 , wherein the coil portion further includes:
a third coil layer in which a plurality of conductors having a planar spiral shape are stacked;
a fourth coil layer in which a plurality of conductors having a planar spiral shape are stacked;
a second bump disposed between the third coil layer and the fourth coil layer to electrically connect the third coil layer and the fourth coil layer to each other; and
a third bump disposed between the first coil layer and the third coil layer to electrically connect the first coil layer and the third coil layer to each other, and
the first to fourth coil layers are electrically connected to each other through the first to third bumps to form a single coil having coil turns adjacent to each other in the horizontal and vertical directions.

12. The coil component of claim 11 , wherein the first to fourth coil layers include respective first conductors, second conductors, and third conductors disposed between the respective first conductors and the respective second conductors to connect the respective first conductors and the respective second conductors to each other, respectively, and
line widths of the first conductors and the second conductors are wider than line widths of the third conductors.

13. The coil component of claim 12 , wherein the coil portion further includes:
a first resin layer in which the first conductor of the first coil layer and the first conductor of the second coil layer are embedded;
a second resin layer in which the first conductor of the third coil layer and the first conductor of the fourth coil layer are embedded;
a third resin layer in which the second conductor of the first coil layer and the second conductor of the third coil layer are embedded;
a first insulating layer disposed between the first conductor and the second conductor of the first coil layer;
a second insulating layer disposed between the first conductor and the second conductor of the second coil layer;
a third insulating layer disposed between the first conductor and the second conductor of the third coil layer; and
a fourth insulating layer disposed between the first conductor and the second conductor of the fourth coil layer,
the first bump extends through the first resin layer between the first conductor of the first coil layer and the first conductor of the second coil layer,
the second bump extends through the second resin layer between the first conductor of the third coil layer and the first conductor of the fourth coil layer,
the third bump extends through the third resin layer between the second conductor of the first coil layer and the second conductor of the third coil layer,
the third conductor of the first coil layer extends through the first insulating layer,
the third conductor of the second coil layer extends through the second insulating layer,
the third conductor of the third coil layer extends through the third insulating layer, and
the third conductor of the fourth coil layer extends through the fourth insulating layer.

14. The coil component of claim 1 , wherein the magnetic material of the body portion covers an upper portion and a lower portion of the coil portion and fills a through-hole formed in

Assignees

• Samsung Electro Mech

Inventors

• Lee Sa Yong
• Kang Myung Sam
• Min Tae Hong
• Kang Seon Ha
• Hwang Mi Sun
• Seo Il Jong

Classifications

• H01F27/29

  Terminals; Tapping arrangements {for signal inductances} · CPC title

• H01F27/255 Primary

  made from particles (H01F27/26 takes precedence) · CPC title

• H01F27/292

  Surface mounted devices · CPC title

• H01F2017/048

  with encapsulating core, e.g. made of resin and magnetic powder · CPC title

• H01F17/0013 Primary

  with stacked layers · CPC title