# US 7,746,210 B2 · Electronic device

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 7,746,210 B2
- Document ID: US7746210B2
- Status: Granted
- Kind: B2
- Application number: 12/237,826
- Filed: 2008-09-25
- Published: 2009-04-02
- Granted: 2010-06-29
- Earliest claimed: 2007-09-28
- Assignees: Fujitsu Media Devices Limited; Fujitsu Limited
- Inventors: Xiaoyu Ml; Takeo Takahashi; Tsuyoshi Matsumoto; Satoshi Ueda
- Web page: https://patentgrep.com/patent/US7746210B2

## CPC

- H01F 17/0013: {with stacked layers}
- H01F 27/29: Terminals; Tapping arrangements {for signal inductances}
- H01F 2017/002: {Details of via holes for interconnecting the layers}
- H01F 2017/0073: {with a special conductive pattern, e.g. flat spiral}
- H01F: MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES

## Abstract

An electronic device includes a substrate, a first coil that has a spiral shape and is provided on the substrate, a second coil that has a spiral shape, is provided above the first coil, and is spaced from the first coil, a first connection portion that electrically couples the first coil and the second coil, a wire that is provided on the substrate and connects one of the first coil and the second coil to outside, and a second connection portion that is mechanically connected to an outer side face of outermost circumference of the second coil and is mechanically connected on the substrate where one of the wire and the first coil is not provided.

## Claims

### Claim 1

An electronic device comprising:
a substrate;
a first coil that has a spiral shape and is provided on the substrate;
a second coil that has a spiral shape, is provided above the first coil, and is spaced from the first coil;
a first connection portion that electrically couples the first coil and the second coil;
a wire that is provided on the substrate and connects one of the first coil and the second coil to outside; and
a second connection portion that is mechanically connected to an outer side face of outermost circumference of the second coil and is mechanically connected on the substrate where one of the wire and the first coil is not provided.

### Claim 2 (depends on 1)

The electronic device as claimed in claim 1, wherein the second connection portion is not provided inside of the second coil.

### Claim 3 (depends on 1)

The electronic device as claimed in claim 1, wherein the second connection portion is electrically conductive.

### Claim 4 (depends on 2)

The electronic device as claimed in claim 2, wherein the second connection portion is arranged at substantially equal interval on the circumference of the second coil.

### Claim 5 (depends on 2)

The electronic device as claimed in claim 2 further comprising a third connection portion that is electrically coupled to the wire and the second coil on the substrate and is mechanically connected to the outer side face of the outermost circumference of the second coil,
wherein the second connection portion and the third connection portion are arranged at substantially equal interval on the circumference of the second coil.

### Claim 6 (depends on 1)

The electronic device as claimed in claim 1, wherein the first connection portion and the second connection portion are made of the same material.

### Claim 7 (depends on 5)

The electronic device as claimed in claim 5, wherein the first connection portion, the second connection portion and the third connection portion are made of the same material.

### Claim 8 (depends on 1)

The electronic device as claimed in claim 1, wherein the second connection portion includes an insulator.

### Claim 9 (depends on 1)

The electronic device as claimed in claim 1 further comprising a fourth connection portion that is mechanically connected to inner side face of innermost circumference of the second coil, is mechanically connected on the substrate where one of the wire and the first coil is not provided, and includes an insulator.