Inductor bridge and electronic device

Patent metadata

Field	Value
Publication number	US-11439005-B2
Application number	US-201816217096-A
Country	US
Kind code	B2
Filing date	Dec 12, 2018
Priority date	Jun 22, 2016
Publication date	Sep 6, 2022
Grant date	Sep 6, 2022

Abstract

An inductor bridge includes an inductor in a flexible, flat plate-shaped element body including resin bases that are laminated, and a wiring unit connected in series to the inductor. The inductor includes wound conductor patterns, each with a winding axis in a laminating direction of the resin bases and respectively provided on each of the resin bases, and an interlayer connection conductor interlayer-connecting the wound conductor patterns. The wiring unit includes a wiring pattern at a layer between a first surface of the wound conductor pattern and a layer farthest from the first surface and interlayer connection conductors conducted to the wiring pattern.

First claim

What is claimed is:

1. An inductor bridge bridge-connecting a first circuit and a second circuit, the inductor bridge comprising:
a flat plate-shaped element body having flexibility and including a plurality of resin bases that are laminated;
a first connection unit provided on a first surface of the element body and connected to the first circuit;
a second connection unit provided on the first surface and connected to the second circuit;
an inductor electrically connected between the first connection unit and the second connection unit and provided in the element body; and
a wiring unit connected in series to the inductor; wherein
the inductor includes wound conductor patterns, each of which has a winding axis in a laminating direction of the plurality of resin bases and is respectively provided on each of the plurality of resin bases, and an interlayer connection conductor interlayer-connecting the wound conductor patterns; and
the wiring unit includes a wiring pattern and a plurality of interlayer connection conductors connected to the wiring pattern, the wiring pattern being provided at a single layer or a plurality of layers, the single layer or the plurality of layers being different from the first surface and a layer of the wound conductor pattern farthest from the first surface and being located between the first surface and the layer farthest from the first surface.

2. The inductor bridge according to claim 1 , wherein
the wiring pattern is provided at the plurality of layers; and
the wiring pattern and the interlayer connection conductors are disposed stepwise from a layer closest to the layer farthest from the first surface to a layer close to the first surface.

3. The inductor bridge according to claim 1 , wherein
the wiring pattern includes a wiring pattern portion that overlaps the wound conductor pattern in planar view and a conductor pattern that does not overlap the wound conductor pattern in planar view; and
the wiring pattern portion that overlaps the wound conductor pattern is located farther from the wound conductor pattern than the conductor pattern that does not overlap the wound conductor pattern in the laminating direction.

4. The inductor bridge according to claim 1 , wherein the element body includes a bending portion that is bent at a position at which the wiring pattern is provided.

5. The inductor bridge according to claim 1 , wherein
the first connection unit is disposed on a connector mounting electrode provided at a first end of the element body, and connected to a first circuit in a mechanical contact manner; and
the second connection unit is disposed on a connector mounting electrode provided at a second end of the element body, and connected to a second circuit in a mechanical contact manner.

6. The inductor bridge according to claim 1 , wherein the plurality of resin bases are made of a liquid crystal polymer.

7. The inductor bridge according to claim 1 , wherein the wound conductor pattern and the wiring pattern are made of a Cu foil.

8. The inductor bridge according to claim 1 , wherein each of the wound conductor patterns includes at least one turn.

9. The inductor bridge according to claim 1 , wherein each of the wound conductor patterns is a rectangular or substantially rectangular spiral conductor pattern.

10. An electronic device comprising:
the inductor bridge according to claim 1 ;
the first circuit: and
the second circuit; wherein

the first circuit and the second circuit are connected to each other with the inductor bridge interposed therebetween.

11. The electronic device according to claim 10 , wherein
the wiring pattern is provided at the plurality of layers; and
the wiring pattern and the interlayer connection conductors are disposed stepwise from a layer closest to the layer farthest from the first surface to a layer close to the first surface.

12. The electronic device according to claim 10 , wherein
the wiring pattern includes a wiring pattern portion that overlaps the wound conductor pattern in planar view and a conductor pattern that does not overlap the wound conductor pattern in planar view; and
the wiring pattern portion that overlaps the wound conductor pattern is located farther from the wound conductor pattern than the conductor pattern that does not overlap the wound conductor pattern in the laminating direction.

13. The electronic device according to claim 10 , wherein the element body includes a bending portion that is bent at a position at which the wiring pattern is provided.

14. The electronic device according to claim 10 , wherein
the first connection unit is disposed on a connector mounting electrode provided at a first end of the element body, and connected to a first circuit in a mechanical contact manner; and
the second connection unit is disposed on a connector mounting electrode provided at a second end of the element body, and connected to a second circuit in a mechanical contact manner.

15. The electronic device according to claim 10 , wherein the plurality of resin bases are made of a liquid crystal polymer.

16. The electronic device according to claim 10 , wherein the wound conductor pattern and the wiring pattern are made of a Cu foil.

17. The electronic device according to claim 10 , wherein each of the wound conductor patterns includes at least one turn.

18. The electronic device according to claim 10 , wherein each of the wound conductor patterns is a rectangular or substantially rectangular spiral conductor pattern.

Assignees

• Murata Manufacturing Co

Inventors

• Morita Isamu
• Okamoto Bunta

Classifications

• H01F27/292

  Surface mounted devices · CPC title

• H05K1/165

  incorporating printed inductors · CPC title

• H01F2027/2809

  on stacked layers · CPC title

• H05K2201/0141

  Liquid crystal polymer [LCP] · CPC title

• H01F2017/006

  flexible printed inductors · CPC title