# US 2015/0146397 A1 · Wiring board and electronic device

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- Number: US 2015/0146397 A1
- Document ID: US20150146397A1
- Status: Published application
- Kind: A1
- Application number: 14/404,938
- Filed: 2013-05-30
- Published: 2015-05-28
- Earliest claimed: 2012-05-30
- Assignees: KYOCERA Corporation
- Applicants: KYOCERA Corporation
- Inventors: Yukio Fujihara; Kenjirou Fukuda
- Web page: https://patentgrep.com/patent/US20150146397A1

## CPC

- H05K 1/111: {Pads for surface mounting, e.g. lay-out}
- H05K 1/181: associated with surface mounted components
- H10H 20/857: Interconnections, e.g. lead-frames, bond wires or solder balls
- H05K 1/02: Details
- H05K 1/112: {directly combined with via connections}
- H05K 1/117: {Pads along the edge of rigid circuit boards, e.g. for pluggable connectors}
- H05K 2201/0367: Metallic bump or raised conductor not used as solder bump
- H05K 2201/09036: Recesses or grooves in insulating substrate
- H05K 2201/0939: Curved pads, e.g. semi-circular or elliptical pads or lands
- H10H 20/8506: {Containers}
- H10W 70/655: Fan-out layouts
- H10W 74/00: Encapsulations, e.g. protective coatings
- H10W 90/754: {between a chip and a stacked insulating package substrate, interposer or RDL}
- Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product
- H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

## Abstract

There is provided a wiring board capable of strengthening the bonding between an external terminal and a wiring of an external circuit board. A wiring board includes an insulating substrate having two main surfaces facing each other, side surfaces connecting to the two main surfaces and concave portions concave from the side surfaces and connecting to at least one of the two main surfaces; and external terminals disposed from one of the main surfaces to inner surfaces of the respective concave portions, each of the external terminals having a convex-shaped section disposed on one main surface side along each of the concave portions.

## Claims

### Claim 1

A wiring board, comprising:
an insulating substrate having two main surfaces facing each other, side surfaces connecting to the two main surfaces and concave portions concave from the side surfaces and connecting to at least one of the two main surfaces; and
external terminals disposed from one of the main surfaces to inner surfaces of the respective concave portions, each of the external terminals having a convex-shaped section disposed on one main surface side along each of the concave portions.

### Claim 2 (depends on 1)

The wiring board according to claim 1,
wherein the respective convex-shaped sections are disposed so as to surround the respective concave portions.

### Claim 3 (depends on 1)

The wiring board according to claim 1,
wherein the respective convex-shaped sections comprise plural convex portions, which are disposed along each of the concave portions.

### Claim 4 (depends on 1)

The wiring board according to claim 1,
wherein each of the convex-shaped sections is composed of one convex portion, which is disposed along each of the concave portions.

### Claim 5 (depends on 3)

The wiring board according to claim 3,
wherein each of the convex portions has a strip shape in a plan view thereof.

### Claim 6 (depends on 3)

The wiring board according to claim 3,
wherein an edge on a concave portion side of each of the convex portions has an arc shape in a plan view thereof.

### Claim 7 (depends on 4)

The wiring board according to claim 4,
wherein an edge on a concave portion side of the one convex portion has a similar shape to an edge of the concave portion in a plan view thereof.

### Claim 8 (depends on 1)

An electronic device, comprising:
the wiring board according to claim 1; and
an electronic component mounted on the wiring board.

### Claim 9 (depends on 4)

The wiring board according to claim 4,
wherein the one convex portion has a strip shape in a plan view thereof.

### Claim 10 (depends on 4)

The wiring board according to claim 4,
wherein an edge on a concave portion side of the one convex portion has an arc shape in a plan view thereof.