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Printed wiring board, electronic device, and printed wiring board manufacturing method

  • US 8,614,898 B2
  • Filed: 06/09/2011
  • Issued: 12/24/2013
  • Est. Priority Date: 06/10/2010
  • Status: Active Grant
First Claim
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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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