Coil component and manufacturing method for the same

Patent metadata

Field	Value
Publication number	US-11830652-B2
Application number	US-201916527943-A
Country	US
Kind code	B2
Filing date	Jul 31, 2019
Priority date	Mar 6, 2019
Publication date	Nov 28, 2023
Grant date	Nov 28, 2023

Abstract

A coil component and a method for manufacturing the same are provided, and the coil component includes a body portion including a magnetic material, a support member disposed in the body portion, first and second conductor patterns disposed in both sides of the support member, opposing each other, a recess portion formed in a side surface of the support member, a via conductor disposed in the recess portion and connecting the first and second conductor patterns to each other, and a via pad disposed in an end portion of each of the first and second conductor patterns to connect the first and second conductor patterns to the via conductor, and having a line width greater than line widths of the first and second conductor patterns.

First claim

What is claimed is:

1. A coil component, comprising:
a body portion including a magnetic material;
a support member disposed in the body portion; and
first and second conductor patterns disposed on both sides of the support member, opposing each other,
wherein the support member has a protrusion portion protruding from a side surface of the support member and a recess portion disposed in the protrusion portion,
a via conductor is disposed in the recess portion and connects the first and second conductor patterns to each other,
each of the first and second conductor patterns includes a via pad disposed in an end portion thereof to connect the first and second conductor patterns to the via conductor, the via pad of one of the first and second conductor patterns having a line width greater than line widths of other portions of the first and second conductor patterns, and
one side surface of the protrusion portion and one side surface of the via conductor are co-planar.

2. The coil component of claim 1 , wherein the via pad of one of the first and second conductor patterns has a recess portion in which a portion of the side surface is open.

3. The coil component of claim 2 , wherein the via conductor is disposed in the recess portion of the support member and the recess portion of the via pad of one of the first and second conductor patterns, as one integral piece.

4. The coil component of claim 1 , wherein the via conductor has one side surface which is in contact with an inner wall of the recess portion, and another side surface which is not in contact with the inner wall of the recess portion.

5. The coil component of claim 2 , wherein the via conductor is disposed in the recess portion of the via pad of one of the first and second conductor patterns.

6. The coil component of claim 1 , wherein a cross-sectional area of the via pad of one of the first and second conductor patterns is 4 to 5 times a cross-sectional area of the via conductor.

7. The coil component of claim 1 , wherein an upper surface of the via pad includes a corner portion having a circular arc, and a straight line connecting the corner portion.

8. The coil component of claim 7 , wherein the via pad includes a plurality of corner portions each having a shape of a circular arc, and any point in the circular arc has a constant radius of curvature.

9. The coil component of claim 1 , wherein a center portion of the support member has a through-hole penetrating through the support member.

10. The coil component of claim 9 , wherein the through-hole is filled with the magnetic material.

11. The coil component of claim 9 , wherein the through-hole is connected to the recess portion to form a single hole.

12. A coil component, comprising:
a body portion including a magnetic material;
a support member disposed in the body portion; and
first and second conductor patterns disposed on both sides of the support member, opposing each other,
wherein each of the first and second conductor patterns includes a via pad at an inner end thereof, a line width of the via pad of one of the first and second conductor patterns being greater than line widths of other portions of the first and second conductor patterns,
the support member has a protrusion portion protruding from a side surface of the support member and a recess portion disposed in the protrusion portion,
the via pads of the first and second conductor patterns are connected to each other through a via conductor which penetrates the protrusion portion of the support member and is disposed in the recess portion,
a cross-sectional shape of the via conductor in a plane perpendicular to a stacking direction of the of the first and second conductor patterns is a half-circle, and
one side surface of the protrusion portion and one side surface of the via conductor are co-planar.

13. The coil component of claim 12 , wherein the recess portion, having a half-circle shape, accommodates a portion of the via conductor.

Assignees

• Samsung Electro Mech

Inventors

• Kim Jae Hun
• Moon Byeong Cheol

Classifications

• H01F2017/048

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

• H01F2017/002

  Details of via holes for interconnecting the layers · CPC title

• H01F2027/2809

  on stacked layers · CPC title

• H01F41/00

  Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties · CPC title

• H01F41/046

  structurally combined with ferromagnetic material · CPC title