Printed wiring board, electronic device, and printed wiring board manufacturing method
First Claim
Patent Images
1. A printed wiring board comprising:
- an insulating resinous substrate having an aperture unit;
a first terminal unit and a second terminal unit consisting of a conductor and formed on top of the resinous substrate; and
a fuse unit that electrically couples the first terminal unit and the second terminal unit to each other;
wherein at least a part of the fuse unit is disposed over the aperture unit, and is covered by a porous inorganic covering material having insulating properties, andthe inorganic covering material has a coefficient of thermal expansion approximately equal to that of the fuse unit.
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Abstract
A printed wiring board includes an insulating resinous substrate having an aperture unit, a first terminal unit and a second terminal unit consisting of a conductor and formed on top of the resinous substrate, and a fuse unit that electrically couples the first terminal unit and the second terminal unit to each other. At least a part of the fuse unit is disposed over the aperture unit, and in addition, is covered by a porous inorganic covering material having insulating properties.
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Citations
50 Claims
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1. A printed wiring board comprising:
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an insulating resinous substrate having an aperture unit; a first terminal unit and a second terminal unit consisting of a conductor and formed on top of the resinous substrate; and a fuse unit that electrically couples the first terminal unit and the second terminal unit to each other; wherein at least a part of the fuse unit is disposed over the aperture unit, and is covered by a porous inorganic covering material having insulating properties, and the inorganic covering material has a coefficient of thermal expansion approximately equal to that of the fuse unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50)
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Specification