Circuit board
AssigneeShinko Electric Industries Co., Ltd.
InventorKenichi Mori
Life of this patent
Estimating the term…
Abstract
A circuit board includes a substrate having an end surface, and a principal surface on which an electronic component is mounted, a first region, provided on the principal surface, and coated with a moistureproof agent, a second region, provided on the principal surface, and prohibited from being coated with the moistureproof agent, and a groove having two ends, formed in the principal surface, between the first region and the second region. The two ends of the groove reach the end surface of the substrate. The groove includes a guiding part, configured to guide the moistureproof agent overflowing from the first region into the groove, provided at a portion of the groove farthest away from the end surface.
Claims7
A circuit board comprising:
- a substrate having an end surface, and a principal surface on which an electronic component is mounted;
- a first region, provided on the principal surface, and coated with a moistureproof agent;
- a second region, provided on the principal surface, and prohibited from being coated with the moistureproof agent;
- and
- a groove having two ends, formed in the principal surface, between the first region and the second region, wherein
- the two ends of the groove reach the end surface of the substrate,
- the groove includes a guiding part, configured to guide the moistureproof agent overflowing from the first region into the groove, provided at a portion of the groove farthest away from the end surface, and
- the guiding part, in a plan view, includes multiple protrusions formed on a sidewall surface of the groove closer to the first region and protruding in a direction inward of the groove.
Dependencies are inferred from the claim text.