Coil component

Patent metadata

Field	Value
Publication number	US-12300415-B2
Application number	US-202017018455-A
Country	US
Kind code	B2
Filing date	Sep 11, 2020
Priority date	Oct 2, 2019
Publication date	May 13, 2025
Grant date	May 13, 2025

Abstract

Disclosed herein is a coil component that includes a substrate having a first surface, and a first coil pattern formed on the first surface of the substrate. The first coil pattern includes a plurality of turns having an innermost turn and an outermost turn. Each of the innermost and outermost turns is radially divided into a plurality of lines. The innermost turn is greater in a number of lines than the outermost turn.

First claim

What is claimed is:

1. A coil component comprising:
a substrate having first and second surfaces;
a first coil pattern formed on the first surface of the substrate and spirally wound in a plurality of turns; and
a second coil pattern formed on the second surface of the substrate and spirally wound in a plurality of turns,
wherein the plurality of turns of the first coil pattern includes a first turn including an outermost turn, a second turn including an innermost turn, and a third turn positioned between the first turn and the second turn,
wherein the plurality of turns of the second coil pattern includes a fourth turn including an outermost turn, a fifth turn including an innermost turn, and a sixth turn positioned between the fourth and the fifth turn,
wherein the first turn is radially divided into a plurality of lines including a first line and a seventh line by a spiral-shaped slit,
wherein the second turn is radially divided into a plurality of lines including a second line, a third line, and an eighth line by a spiral-shaped slit,
wherein the third turn includes a first branch point from the first line to the second and third lines,
wherein the fourth turn is radially divided into a plurality of lines including a fourth line and a ninth line by a spiral-shaped slit,
wherein the fifth turn is radially divided into a plurality of lines including a fifth line, a sixth line, and a tenth line by a spiral-shaped slit,
wherein the sixth turn includes a second branch point from the fourth line to the fifth and sixth lines,
wherein the first line is isolated from the seventh and eighth lines at least on the second and third turns,
wherein the fourth line is isolated from the ninth and tenth lines at least on the fourth and fifth turns,
wherein the third line is positioned on an inner peripheral side than the second line,
wherein the sixth line is positioned on an inner peripheral side than the fifth line,
wherein an inner peripheral end of the second line is connected to an inner peripheral end of the sixth line through a first connection part formed so as to penetrate the substrate, and
wherein an inner peripheral end of the third line is connected to an inner peripheral end of the fifth line through a second connection part formed so as to penetrate the substrate.

2. The coil component as claimed in claim 1 , wherein the second, third, fifth, and sixth lines are smaller in pattern width than the first and fourth lines.

3. The coil component as claimed in claim 1 , wherein the second, third, fifth, and sixth lines are smaller in pattern thickness than the first and fourth lines.

4. A coil component comprising:
a substrate having first and second surfaces;
a first coil pattern formed on the first surface of the substrate and spirally wound in a plurality of turns; and
a second coil pattern formed on the second surface of the substrate and spirally wound in a plurality of turns,
wherein the first coil pattern includes a first line and second and third lines positioned on an inner peripheral side than the first line and branching from the first line,
wherein the second coil pattern includes a fourth line and fifth and sixth lines positioned on an inner peripheral side than the fourth line and branching from the fourth line,
wherein the third line is positioned on an inner peripheral side than the second line,
wherein the sixth line is positioned on an inner peripheral side than the fifth line,
wherein an inner peripheral end of the second line is connected to an inner peripheral end of the sixth line through a first connection part formed so as to penetrate the substrate,
wherein an inner peripheral end of the third line is connected to an inner peripheral end of the fifth line through a second connection part formed so as to penetrate the substrate,
wherein the first line is continuously increased in pattern width toward a portion at which the first line branches into the second and third lines, and
wherein the fourth line is continuously increased in pattern width toward a portion at which the fourth line branches into the fifth and sixth lines.

Assignees

• Tdk Corp

Inventors

• Chiyo Noritaka
• Maruyama Takakazu
• Ohishi Takahiro
• Moriki Tomohiro
• Kaneko Shigeru

Classifications

• H01F27/34

  Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields · CPC title

• H01F2027/348

  Preventing eddy currents · CPC title

• H01F2017/0073

  with a special conductive pattern, e.g. flat spiral · CPC title

• H01F2017/004

  with the coil helically wound around an axis without a core · CPC title

• H01F27/2804 Primary

  Printed windings · CPC title