Printed wiring board
According to one embodiment, a printed wiring board includes a wiring board, a connector part, a connection pad provided between the wiring board and the connector part and connected with the connector part with a solder material and a guide groove provided in the wiring board to be continuous to the connection pad, to guide a portion of the solder material from the connection pad.
1. A printed wiring board comprising:
a wiring board including a first main surface and a second main surface opposite to the first main surface;
a connector part;
a connection pad provided between the wiring board and the connector part and connected with the connector part with a solder material; and
a guide groove provided on the first main surface to extend from the connection pad, to guide a portion of the solder material from the connection pad.
2. The wiring board of claim 1 , further comprising:
a recessed region provided continuous to the guide groove, to receive the portion of the solder material.
3. The wiring board of claim 1 , further comprising:
a receptor film provided on the guide groove, to hold the portion of the solder material guided from the connection pad.
4. The wiring board of claim 3 , wherein
the receptor film is a resin film.
5. The wiring board of claim 1 , wherein
the wiring board includes an insulating substrate, an insulating layer and a conductor layer prepared between the insulating substrate and the insulating layer, and
at least a part of the guide groove, which is near the connection pad has a depth less than a thickness of the conductor layer.
6. The wiring board of claim 1 , wherein
the wiring board includes an insulating substrate, an insulating layer and a conductor layer prepared between the insulating substrate and the insulating layer, and
at least a part of the guide groove, which is near the connection pad has a depth which reaches the insulating substrate.
7. The wiring board of claim 1 , wherein the guide groove extends to be apart from the connector part.
8. The wiring board of claim 1 , wherein the guide groove extends in a direction towards at least a front end portion or a rear end portion of the connector part.
9. The wiring board of claim 1 , wherein the guide groove comprises:
a first guide groove which has a first depth, and is connected with the connection pad, and
a second guide groove which has a second depth greater than the first depth, and is continuous to the first guide groove.