Coil component and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-2022310293-A1
Application number	US-202217695727-A
Country	US
Kind code	A1
Filing date	Mar 15, 2022
Priority date	Mar 23, 2021
Publication date	Sep 29, 2022
Grant date	—

Abstract

A coil component includes a main body having a main surface, an inductor wiring conductor arranged in the main body, and an extended conductor arranged in the main body so as to extend toward the main surface and electrically connected to the inductor wiring conductor. The extended conductor includes an end surface exposed on the main surface of the main body and an extending portion integrally formed with the end surface and arranged so as to extend along and on the main surface.

First claim

What is claimed is:

1 . A coil component comprising:
a main body having a main surface; an inductor wiring conductor arranged in the main body; and an extended conductor arranged in the main body so as to extend toward the main surface and electrically connected to the inductor wiring conductor; wherein the extended conductor includes an end surface exposed on the main surface, and an extending portion that is integrally configured with the end surface and is arranged so as to extend along and on the main surface.

2 . The coil component according to claim 1 , wherein
the extended conductor is arranged so as to extend in a direction orthogonal to the main surface.

3 . The coil component according to claim 1 , wherein
the extending portion is located only on one side of the end surface when viewed from a direction orthogonal to the main surface.

4 . The coil component according to claim 1 , further comprising:
a second extended conductor arranged in the main body so as to extend toward the main surface and electrically connected to the inductor wiring conductor, wherein the second extended conductor includes a second end surface exposed on the main surface and a second extending portion integrally configured with the second end surface and arranged so as to extend along and on the main surface, and the extending portion and the second extending portion are located in the same direction to each other with respect to the end surface and the second end surface, respectively.

5 . The coil component according to claim 1 , further comprising:
a second inductor wiring conductor arranged in the main body; and a third extended conductor arranged in the main body so as to extend toward the main surface and electrically connected to the second inductor wiring conductor; wherein the third extended conductor includes a third end surface exposed on the main surface, and a third extending portion integrally configured with the third end surface and arranged so as to extend along and on the main surface, and the extending portion and the third extending portion are located in the same direction to each other with respect to the end surface and the third end surface, respectively.

6 . The coil component according to claim 1 , wherein
the extended conductor is made of copper or a copper alloy.

7 . The coil component according to claim 1 , wherein
the main body includes a magnetic material.

8 . The coil component according to claim 1 , further comprising:
a plating film that covers the end surface and the extending portion.

9 . The coil component according to claim 2 , wherein
the extending portion is located only on one side of the end surface when viewed from a direction orthogonal to the main surface.

10 . The coil component according to claim 2 , further comprising:
a second extended conductor arranged in the main body so as to extend toward the main surface and electrically connected to the inductor wiring conductor, wherein the second extended conductor includes a second end surface exposed on the main surface and a second extending portion integrally configured with the second end surface and arranged so as to extend along and on the main surface, and the extending portion and the second extending portion are located in the same direction to each other with respect to the end surface and the second end surface, respectively.

11 . The coil component according to claim 3 , further comprising:
a second extended conductor arranged in the main body so as to extend toward the main surface and electrically connected to the inductor wiring conductor, wherein the second extended conductor includes a second end surface exposed on the main surface and a second extending portion integrally configured with the second end surface and arranged so as to extend along and on the main surface, and the extending portion and the second extending portion are located in the same direction to each other with respect to the end surface and the second end surface, respectively.

12 . The coil component according to claim 2 , further comprising:
a second inductor wiring conductor arranged in the main body; and a third extended conductor arranged in the main body so as to extend toward the main surface and electrically connected to the second inductor wiring conductor; wherein the third extended conductor includes a third end surface exposed on the main surface, and a third extending portion integrally configured with the third end surface and arranged so as to extend along and on the main surface, and the extending portion and the third extending portion are located in the same direction to each other with respect to the end surface and the third end surface, respectively.

13 . The coil component according to claim 3 , further comprising:
a second inductor wiring conductor arranged in the main body; and a third extended conductor arranged in the main body so as to extend toward the main surface and electrically connected to the second inductor wiring conductor; wherein the third extended conductor includes a third end surface exposed on the main surface, and a third extending portion integrally configured with the third end surface and arranged so as to extend along and on the main surface, and the extending portion and the third extending portion are located in the same direction to each other with respect to the end surface and the third end surface, respectively.

14 . The coil component according to claim 2 , wherein
the extended conductor is made of copper or a copper alloy.

15 . The coil component according to claim 2 , wherein
the main body includes a magnetic material.

16 . The coil component according to claim 2 , further comprising:
a plating film that covers the end surface and the extending portion.

17 . A method of manufacturing a coil component comprising:
preparing a structure which has a main surface, and inside which an inductor wiring conductor and an extended conductor electrically connected to the inductor wiring conductor are arranged, with the extended conductor extending toward the main surface; grinding the structure from the main surface side so as to expose an end surface of the extended conductor on the main surface side; and forming, in the grinding, an extending portion that is integrally configured with an end surface of the extended conductor and extends along and on the main surface after grinding.

18 . The method of manufacturing a coil component according to claim 17 ,
wherein in the grinding, the extended conductor is ground only in one direction.

19 . The method of manufacturing a coil component according to claim 17 , wherein
in the grinding, first abrasive grains and second abrasive grains smaller than the first abrasive grains are used, and after grinding with the first abrasive grains, grinding with the second abrasive grains is performed.

20 . The method of manufacturing a coil component according to claim 18 , wherein
in the grinding, first abrasive grains and second abrasive grains smaller than the first abrasive grains are used, and after grinding with the first abrasive grains, grinding with the second abrasive grains is performed.

Assignees

• Murata Manufacturing Co

Inventors

• Kawakami Yuuki
• Yoshioka Yoshimasa
• Tominaga Ryuichiro
• Kunimori Keisuke

Classifications

• H01F17/0006 Primary

  Printed inductances (printed coils for dynamo-electric machines H02K3/26; printed circuits H05K) · CPC title

• H01F41/04

  for manufacturing coils {(coils for transformer or inductances H01F27/28)} · CPC title

• H01F17/04

  with magnetic core · CPC title

• H01F41/041

  Printed circuit coils (apparatus or processes for manufacturing printed circuits in general H05K3/00) · CPC title

• H01F27/2804

  Printed windings · CPC title