Coil component

Patent metadata

Field	Value
Publication number	US-11715976-B2
Application number	US-202016802372-A
Country	US
Kind code	B2
Filing date	Feb 26, 2020
Priority date	Feb 27, 2019
Publication date	Aug 1, 2023
Grant date	Aug 1, 2023

Abstract

Disclosed herein is a coil component that includes a first coil pattern wound in a planar spiral shape. At least one turn constituting the first coil pattern is divided into a plurality of lines by a spiral slit, and a space width between the plurality of lines differs depending on a planar position.

First claim

What is claimed is:

1. A coil component comprising a first coil pattern wound in a first planar spiral shape,
wherein at least one turn constituting the first coil pattern is divided into a first plurality of lines by a first spiral slit,
wherein a space width along a first virtual line and a space width along a second virtual line differ from each other, where the first virtual line extends in a first direction with a first reference point positioned in an inner diameter area of the first coil pattern as a first starting point, and where the second virtual line extends in a second direction substantially perpendicular to the first direction with the first reference point as a second starting point, and
wherein CW 0 x >CW 0 y and CW 0 x /CW 0 y >D 0 x /D 0 y are satisfied, where an outer size of the first coil pattern in the first direction is CW 0 x , where an outer size of the first coil pattern in the second direction is CW 0 y , where a size of the inner diameter area of the first coil pattern in the first direction is D 0 x , and where a size of the inner diameter area of the first coil pattern in the second direction is D 0 y.

2. The coil component as claimed in claim 1 , wherein a space width along the first virtual line and a third virtual line are larger than a space width along the second virtual line and a fourth virtual line, where the third virtual line extends in a direction 180° opposite to the first direction with the first reference point as a third starting point, and where the fourth virtual line extends in a direction 180° opposite to the second direction with the first reference point as a fourth starting point.

3. The coil component as claimed in claim 2 , further comprising:
a second coil pattern wound in a second planar spiral shape; and
a first insulating substrate having first and second surfaces opposite to each other,
wherein the first coil pattern is formed on the first surface of the first insulating substrate,
wherein the second coil pattern is formed on the second surface of the first insulating substrate,
wherein an innermost turn of the first coil pattern is divided by the first spiral slit into the first plurality of lines including first and second lines,
wherein an innermost turn of the second coil pattern is divided by a second spiral slit into a second plurality of lines including third and fourth lines,
wherein the first line is positioned on an inner peripheral side with respect to the second line,
wherein the third line is positioned on an inner peripheral side with respect to the fourth line,
wherein inner peripheral ends of the first and fourth lines are connected to each other through a first through hole conductor penetrating the first insulating substrate, and
wherein inner peripheral ends of the second and third lines are connected to each other through a second through hole conductor penetrating the first insulating substrate.

4. The coil component as claimed in claim 1 , wherein a space width along the first virtual line is larger than a space width along the second virtual line and a third virtual line, where the third virtual line extends in a direction 180° opposite to the first direction with the first reference point as a third starting point.

5. The coil component as claimed in claim 1 , further comprising:
a sixth coil pattern wound in a sixth planar spiral shape; and
a magnetic sheet,
wherein the first and sixth coil patterns are disposed so as to overlap the magnetic sheet in a plan view,
wherein the first and sixth coil patterns are connected in parallel,
wherein the first coil pattern is disposed closer to the magnetic sheet than the sixth coil pattern, and
wherein a length of a wire forming the sixth coil pattern is longer than a length of a wire forming the first coil pattern.

6. A coil component comprising first and third coil patterns wound in first and third planar spiral shapes, respectively,
wherein at least one turn constituting the first coil pattern is divided into a first plurality of lines by a first spiral slit,
wherein a space width between the first plurality of lines differs depending on a planar position,
wherein a space width along a first virtual line and a space width along a second virtual line differ from each other, where the first virtual line extends in a first direction with a first reference point positioned in an inner diameter area of the first coil pattern as a first starting point, and where the second virtual line extends in a second direction substantially perpendicular to the first direction with the first reference point as a second starting point,
wherein a space width along the first virtual line and a third virtual line are larger than a space width along the second virtual line and a fourth virtual line, where the third virtual line extends in a direction 180° opposite to the first direction with the first reference point as a third starting point, and where the fourth virtual line extends in a direction 180° opposite to the second direction with the first reference point as a fourth starting point,
wherein at least one turn constituting the third coil pattern is divided into a third plurality of lines by a third spiral slit,
wherein a space width along a fifth virtual line is larger than a space width along a sixth virtual line, where the fifth virtual line extends in the first direction with a second reference point positioned in an inner diameter area of the third coil pattern as a fifth starting point, and where the sixth virtual line extends in the direction 180° opposite to the first direction with the second reference point as a sixth starting point, and
wherein the first and third coil patterns overlap each other such that the sixth virtual line passes the inner diameter area of the first coil pattern in a plan view.

7. The coil component as claimed in claim 6 , further comprising a switch that exclusively supply current to one of the first and third coil patterns.

8. The coil component as claimed in claim 6 , further comprising:
a fourth coil pattern wound in a fourth planar spiral shape; and
a second insulating substrate having first and second surfaces opposite to each other,
wherein the third coil pattern is formed on the first surface of the second insulating substrate,
wherein the fourth coil pattern is formed on the second surface of the second insulating substrate,
wherein an innermost turn of the third coil pattern is divided by the third spiral slit into a third plurality of lines including fifth and sixth lines,
wherein an innermost turn of the fourth coil pattern is divided by a fourth spiral slit into a fourth plurality of lines including seventh and eighth lines,
wherein the fifth line is positioned on an inner peripheral side with respect to the sixth line,
wherein the seventh line is positioned on an inner peripheral side with respect to the eighth line,
wherein inner peripheral ends of the fifth and eighth lines are connected to each other through a third through hole conductor penetrating the second insulating substrate, and
wherein inner peripheral ends of the sixth and seventh lines are connected to each other through a fourth through hole conductor penetrating the second insulating substrate.

9. The coil component as claimed in claim 6 , further comprising a fifth coil pattern wound in a fifth planar spiral shape,
wherein at least one turn constituting the fifth coil pattern is divided into a fifth plurality of lines by a fifth spiral slit,
wherein a space width along an eighth virtual line is larger than a space width along a seventh virtual line, where the seventh virtual line extends in the first direction with a third reference point pos

Assignees

• Tdk Corp

Inventors

• Chiyo Noritaka
• Tomonari Toshio
• Kaneko Shigeru
• Hirata Shigenori
• Watanabe Akihito
• Asou Hirohumi
• Hayama Junpei
• Ohtsuka Shigeki
• Ohishi Takahiro
• Imai Takaaki
• Moriki Tomohiro
• Maruyama Takakazu

Classifications

• H02J50/10 Primary

  using inductive coupling · CPC title

• H01F5/04

  Arrangements of electric connections to coils, e.g. leads · CPC title

• H01F27/2828

  Construction of conductive connections, of leads · CPC title

• H04B5/0037

  Electricity · mapped topic

• H04B5/0081

  Electricity · mapped topic