| 摘要 |
<p>PURPOSE:To provide a multilayer wiring board capable of preventing insulating substance for the adhesion of resin, etc., from flowing much into holes, capable of preventing part insertion from becoming difficult, and capable of preventing a circuit pattern from malfunctioning. CONSTITUTION:A first base material 12 had holes 15 penetrating first and second layer surface at specified parts. And a second base material 13 has circular protrusions 17 having outside diameter larger than the holes 15.</p> |
