| 摘要 |
A circuit board includes an insulative substrate having a first surface on which an electronic component is mounted, a second surface opposite to the first surface, and a through-hole open in the first surface and the second surface, a first conductive layer formed on the first surface so as to reach the through-hole, to which the electronic component is electrically connected, a second conductive layer formed on the second surface so as to reach the through-hole and electrically connected to the first conductive layer through the through-hole, a third conductive layer formed over the second surface so as to reach the through-hole, covering at least part of the second conductive layer, and filling at least part of the through-hole, a first protective glass layer covering the second conductive layer and the third conductive layer, and an adhesive layer formed on the first protective glass layer. |
