# US 2014/0191829 A1 · Coil wiring element and method of manufacturing coil wiring element

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- Number: US 2014/0191829 A1
- Document ID: US20140191829A1
- Status: Published application
- Kind: A1
- Application number: 14/206,416
- Filed: 2014-03-12
- Published: 2014-07-10
- Earliest claimed: 2011-09-28
- Assignees: Fujikura Ltd.
- Applicants: Fujikura Ltd.
- Inventors: Yasuto CHIBA
- Web page: https://patentgrep.com/patent/US20140191829A1

## CPC

- H01F 5/00: Coils (superconducting coils H01F6/06; fixed inductances of the signal type H01F17/00)
- G01R 33/04: using the flux-gate principle
- H01F 5/003: {Printed circuit coils}
- H01F 41/041: {Printed circuit coils (apparatus or processes for manufacturing printed circuits in general H05K3/00)}
- H01F 41/046: {structurally combined with ferromagnetic material}
- Y10T 29/4902: Electromagnet, transformer or inductor
- H01F: MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- G01R: MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES (indicating correct tuning of resonant circuits H03J3/12)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A coil wiring element includes: a plurality of first wirings that are formed above a substrate and have a center portion and both end portions; a second resin portion that is formed above the substrate and support both end portions of each of the first wirings; a first resin portion that covers the center portion of each of the first wirings; a plurality of second wirings that are formed above the first resin portion and have both end portions; connecting portions that connect the first wirings to the second wirings and are supported by the second resin portion; and a coil wiring in which both end portions of the first wirings are connected to both end portions of the second wirings in series, the coil wiring being wound around the first resin portion in a spiral shape.

## Claims

### Claim 1

A coil wiring element comprising:
a plurality of first wirings that are formed above a substrate and have a center portion and both end portions;
a second resin portion that is formed above the substrate and support both end portions of each of the first wirings;
a first resin portion that covers the center portion of each of the first wirings;
a plurality of second wirings that are formed above the first resin portion and have both end portions;
connecting portions that connect the first wirings to the second wirings and are supported by the second resin portion; and
a coil wiring in which both end portions of the first wirings are connected to both end portions of the second wirings in series, the coil wiring being wound around the first resin portion in a spiral shape.

### Claim 2 (depends on 1)

The coil wiring element according to claim 1, wherein
the second resin portion has a side face, and
the first wirings, which are provided at and on the side face, are inclined with respect to one surface of the substrate toward a center of the coil wiring.

### Claim 3 (depends on 1)

The coil wiring element according to claim 1, wherein
a magnetic body is located inside the first resin portion.

### Claim 4

A method of manufacturing a coil wiring element, comprising:
forming a second resin portion on one surface of a substrate;
forming a first wiring that is formed above the substrate and has both end portions supported by the second resin portion;
forming a first resin portion that covers a center portion of the first wiring; and
forming a second wiring, that connects both end portions of the first wiring, above the first resin portion by use of a photolithographic technique patterning resist.