FLEXIBLE PRINTED CIRCUIT BOARD
First Claim
Patent Images
1. A flexible printed circuit board comprising:
- an insulation layer which has a first surface and a second surface, and in which a through hole connecting the first surface and the second surface is formed;
a metallic first land which is provided on the first surface and which is provided around an opening in the first surface defined by the through hole;
a metallic second land which is provided on the second surface and which is provided around an opening in the second surface defined by the through hole, the insulation layer being sandwiched by the metallic first land and the metallic second land; and
a metallic connecting portion provided in the through hole to connect the metallic first land and the metallic second land,wherein a channel which connects the through hole and an outside of the metallic first land so that the through hole and the outside of the metallic first land are in fluid communication with each other is formed at a position lower than a top of the metallic first land.
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Abstract
There is provided a flexible printed circuit board. The flexible printed circuit board includes: a flexible insulation layer having a first surface and a second surface; a first land which is conductive and which is provided on the first surface of the flexible insulation layer; and a conductive member which is provided on the second surface of the flexible insulation layer. A recess is formed on the first land.
28 Citations
10 Claims
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1. A flexible printed circuit board comprising:
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an insulation layer which has a first surface and a second surface, and in which a through hole connecting the first surface and the second surface is formed; a metallic first land which is provided on the first surface and which is provided around an opening in the first surface defined by the through hole; a metallic second land which is provided on the second surface and which is provided around an opening in the second surface defined by the through hole, the insulation layer being sandwiched by the metallic first land and the metallic second land; and a metallic connecting portion provided in the through hole to connect the metallic first land and the metallic second land, wherein a channel which connects the through hole and an outside of the metallic first land so that the through hole and the outside of the metallic first land are in fluid communication with each other is formed at a position lower than a top of the metallic first land. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification