Coil component

Patent metadata

Field	Value
Publication number	US-2020135382-A1
Application number	US-201916668700-A
Country	US
Kind code	A1
Filing date	Oct 30, 2019
Priority date	Oct 31, 2018
Publication date	Apr 30, 2020
Grant date	—

Abstract

Disclosed herein is an apparatus that includes a substrate having first and second surfaces opposite to each other, a first coil pattern formed on the first surface of the substrate, and a second coil pattern formed on the second surface of the substrate. The first coil pattern includes first and second lines, and the second coil pattern includes third and fourth lines. The first line is greater in a number of turn than the second line, and the third line is greater in a number of turn than the fourth line. The first line is connected to the fourth line, and the third line is connected to the second line.

First claim

What is claimed is:

1 . A coil component comprising:
a first coil part spirally wound in a plurality of turns; and a second coil part spirally wound in a plurality of turns, wherein at least an innermost peripheral turn of the first coil part is divided into a plurality of lines including first and second lines by a spiral-shaped slit, wherein at least an innermost peripheral turn of the second coil part is divided into a plurality of lines including third and fourth lines by a spiral-shaped slit, wherein the innermost peripheral turn of the first line is larger in angular distance than the innermost peripheral turn of the second line, wherein the innermost peripheral turn of the third line is larger in angular distance than the innermost peripheral turn of the fourth line, wherein an inner peripheral end of the first line is connected to an inner peripheral end of the fourth line, and wherein an inner peripheral end of the second line is connected to an inner peripheral end of the third line.

2 . The coil component as claimed in claim 1 ,
wherein the first line is positioned peripherally outside the second line, and wherein the third line is positioned peripherally outside the fourth line.

3 . The coil component as claimed in claim 1 ,
wherein at least the innermost peripheral turn of each of the first and second coil parts is divided into n lines, wherein a total angular distance of the n lines constituting the innermost peripheral turn of the first coil part is n/2 turns, and wherein a total angular distance of the n lines constituting the innermost peripheral turn of the second coil part is n/2 turns.

4 . The coil component as claimed in claim 3 ,
wherein at least the innermost peripheral turn of the first coil part is divided into two lines including the first and second lines, wherein at least the innermost peripheral turn of the second coil part is divided into two lines including the third and fourth lines, wherein each of the innermost peripheral turns of the first and third lines is ¾ turns, and wherein each of the innermost peripheral turns of the second and fourth lines is ¼ turns.

5 . The coil component as claimed in claim 3 ,
wherein at least the innermost peripheral turn of the first coil part is divided into three lines including the first and second lines, and a fifth line, wherein at least the innermost peripheral turn of the second coil part is divided into three lines including the third and fourth lines, and a sixth line, wherein any one of the first, second and fifth lines is ½ turns, and remaining two thereof are one turn in total, and wherein any one of the third, fourth, and sixth lines is ½ turns, and remaining two thereof are one turn in total.

6 . The coil component as claimed in claim 5 ,
wherein any one of the first, second and fifth lines is radially sandwiched between remaining two thereof, and wherein any one of the third, fourth and sixth lines is radially sandwiched between remaining two thereof.

7 . The coil component as claimed in claim 3 ,
wherein at least the innermost peripheral turn of the first coil part is divided into four lines including the first and second lines, and fifth and seventh lines, wherein at least the innermost peripheral turn of the second coil part is divided into four lines including the third and fourth lines, and sixth and eighth lines, wherein any two of the first, second, fifth and seventh lines are one turn in total, and remaining two thereof are one turn in total, and wherein any two of the third, fourth, sixth and eighth lines are one turn in total, and remaining two thereof are one turn in total.

8 . The coil component as claimed in claim 1 ,
wherein the first coil part is formed on one surface of an insulating substrate, and wherein the second coil part is formed on other surface of the insulating substrate.

9 . The coil component as claimed in claim 8 , wherein the substrate is transparent or translucent.

10 . The coil component as claimed in claim 9 ,
wherein each turn of the first and second coil parts has a circumferential region in which a radial position is not changed and a shift region in which the radial position is shifted, and wherein the circumferential region of each turn of the first coil part and the circumferential region of each turn of the second coil part coincide with each other in planar position.

11 . An apparatus comprising:
a substrate having first and second surfaces opposite to each other; a first coil pattern formed on the first surface of the substrate; and a second coil pattern formed on the second surface of the substrate, wherein the first coil pattern includes first and second lines, wherein the second coil pattern includes third and fourth lines, wherein the first line is greater in a number of turn than the second line, wherein the third line is greater in a number of turn than the fourth line, wherein the first line is connected to the fourth line, and wherein the third line is connected to the second line.

12 . The apparatus of claim 11 ,
wherein a first difference between the number of turn of the first line and the number of turn of the second line is less than 1 turn, and wherein a second difference between the number of turn of the third line and the number of turn of the fourth line is less than 1 turn.

13 . The apparatus of claim 12 , wherein each of the first and second differences is equal to or more than ¼ turns.

14 . The apparatus of claim 13 ,
wherein each of first, second, third, and fourth lines has an inner peripheral end and an outer peripheral end, wherein the inner peripheral ends of the first and fourth lines are connected to each other by a first via conductor penetrating the substrate, and wherein the inner peripheral ends of the second and third lines are connected to each other by a second via conductor penetrating the substrate.

15 . The apparatus of claim 14 ,
wherein the outer peripheral ends of the first and second lines are connected to each other on the first surface of the substrate, and wherein the outer peripheral ends of the third and fourth lines are connected to each other on the second surface of the substrate.

16 . The apparatus of claim 15 ,
wherein the number of turns of the first and third lines are the same as each other, and wherein the number of turns of the second and fourth lines are the same as each other.

17 . The apparatus of claim 11 ,
wherein the first coil pattern further includes fifth line, wherein the second coil pattern further includes sixth line, wherein the fifth line is different in a number of turn from the first and second lines, wherein the sixth line is different in a number of turn from the third and fourth lines, and wherein fifth line is connected to the sixth line.

18 . The apparatus of claim 17 ,
wherein each of first, second, third, fourth, fifth, and sixth lines has an inner peripheral end and an outer peripheral end, wherein the inner peripheral ends of the first and fourth lines are connected to each other by a first via conductor penetrating the substrate, wherein the inner peripheral ends of the second and third lines are connected to each other by a second via conductor penetrating the substrate, wherein the inner peripheral ends of the fifth and sixth lines are connected to each other by a third via conductor penetrating the substrate, wherein the outer peripheral ends of the first, second, and fifth lines are connected to each other on the fi

Assignees

• Tdk Corp

Inventors

• Hayama Junpei
• Chiyo Noritaka
• Kaneko Shigeru
• Moriki Tomohiro
• Ohishi Takahiro
• Tomonari Toshio

Classifications

• H01F5/003 Primary

  Printed circuit coils · CPC title

• H01F27/2804 Primary

  Printed windings · CPC title

• H01F27/06

  Mounting, supporting or suspending transformers, reactors or choke coils {not being of the signal type} · CPC title

• H01F41/041

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

• H01F2027/2809

  on stacked layers · CPC title