Coil component

Patent metadata

Field	Value
Publication number	US-2020274392-A1
Application number	US-202016802372-A
Country	US
Kind code	A1
Filing date	Feb 26, 2020
Priority date	Feb 27, 2019
Publication date	Aug 27, 2020
Grant date	—

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 planar spiral shape,
wherein at least one turn constituting the first coil pattern is divided into a plurality of lines by a spiral slit, and wherein a space width between the plurality of lines differs depending on a planar position.

2 . The coil component as claimed in claim 1 , 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 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 starting point.

3 . The coil component as claimed in claim 2 , 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 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 starting point.

4 . The coil component as claimed in claim 2 , 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 starting point

5 . The coil component as claimed in claim 3 , further comprising:
a second coil pattern wound in a 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 a spiral slit into a plurality of lines including first and second lines, wherein an innermost turn of the second coil pattern is divided by a spiral slit into a 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.

6 . The coil component as claimed in claim 3 , further comprising a third coil pattern wound in a planar spiral shape,
wherein at least one turn constituting the third coil pattern is divided into a plurality of lines by a 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 starting point, and where the sixth virtual line extends in the third direction with the second reference point as a 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 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 a spiral slit into a plurality of lines including fifth and sixth lines, wherein an innermost turn of the fourth coil pattern is divided by a spiral slit into a 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 planar spiral shape,
wherein at least one turn constituting the fifth coil pattern is divided into a plurality of lines by a 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 positioned in an inner diameter area of the fifth coil pattern as a starting point, and where the eighth virtual line extends in the third direction with the third reference point as a starting point, and wherein the first and fifth coil patterns overlap each other such that the seventh virtual line passes the inner diameter area of the first coil pattern in a plan view.

10 . The coil component as claimed in claim 9 , wherein the third and fifth coil patterns are formed on a same insulating substrate.

11 . The coil component as claimed in claim 4 , further comprising a second coil pattern wound in a planar spiral shape,
wherein at least one turn constituting the second coil pattern is divided into a plurality of lines by a spiral slit, wherein a space width along a fifth virtual line is larger than a space width along a fourth virtual line, where the fourth virtual line extends in the first direction with a second reference point positioned in an inner diameter area of the second coil pattern as a starting point, and where the fifth virtual line extends in a direction 180° opposite to the first direction with the second reference point as a starting point, and wherein the first and second coil patterns are disposed such that the third and fourth virtual lines overlap each other.

12 . The coil component as claimed in claim 1 ,
wherein the first coil pattern has an innermost turn positioned on an innermost peripheral side, an outermost turn positioned on an outermost peripheral side, and an intermediate turn whose turn number counting from the innermost or outermost turn is at a center of a total number of turns, wherein each of the innermost turn, outermost turn, and intermediate turn is divided by a spiral slit into a plurality of lines, and wherein a line width of each of the plurality of lines constituting each of the inner and outermost turns is smaller than a line width of each of the plurality of lines constituting the intermediate turn.

13 . The coil component as claimed in claim 12 , wherein the line width of each of the plurality of lines constituting the innermost turn is smaller

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

• H01F27/2871

  Pancake coils · CPC title

• H02J50/12

  of the resonant type · CPC title

• H01F38/14 Primary

  Inductive couplings {(for wireless supply or distribution of electric power using inductive coupling H02J50/10)} · CPC title

• H02J50/10 Primary

  using inductive coupling · CPC title

• H02J50/402

  the two or more transmitting or the two or more receiving devices being integrated in the same unit, e.g. power mats with several coils or antennas with several sub-antennas · CPC title