Wiring board, electronic device, and wiring board manufacturing method
A wiring board includes: an insulating layer that includes a first surface over which an electronic component is mounted and a second surface opposite to the first surface; a conductive layer that is disposed on the second surface; a via that is provided inside a first through-hole that penetrates a portion between the first surface and the second surface of the insulating layer; an electrode that is disposed on the first surface and connected to the via; and a glass plate that is not contact with the conductive layer and is disposed on the first surface and includes a second through-hole through which the electrode is disposed.
1. A wiring board comprising:
a first insulating layer that includes a first surface over which an electronic component is mounted and a second surface opposite to the first surface;
a conductive layer that is disposed on the second surface;
a via that is provided inside a first through-hole that penetrates a portion between the first surface and the second surface of the insulating layer;
an electrode that is disposed on the first surface and connected to the via; and
a glass plate that is not in contact with the conductive layer or the electrode and is disposed on the first surface and includes a second through-hole through which the electrode is disposed.
2. The wiring board of claim 1 , wherein the electrode is smaller than an opening of the second through-hole in a planar view.
3. The wiring board of claim 2 , wherein the second through-hole includes an annular convex portion protruding in a tapered shape on an inner side of the opening along the opening so as to be an opening diameter smaller than those of the first through-hole and the second through-hole between a first opening in the first surface and a second opening in the second surface.
4. The wiring board of claim 1 , wherein the second through-hole has a truncated cone shape in which a first opening in the first surface is greater than a second opening in the second surface or the first opening in the first surface is smaller than the second opening in the second surface between the first surface and the second surface.
5. An electronic device comprising:
a wiring board; and
an electronic component that is mounted over the wiring board,
the wiring board includes
a first insulating layer including a first surface over which the electronic component is mounted, and a second surface opposite to the first surface,
a conductive layer that is disposed on the second surface,
a via that is disposed inside a first through-hole penetrating a portion between the first surface and the second surface of the insulating layer,
an electrode that is disposed on the first surface and connected to the via, and
a glass plate that is not in contact with the conductive layer or the electrode and is disposed on the first surface and includes a second through-hole through which the electrode is disposed.
6. The wiring board of claim 1 wherein the conductive layer extends at least partially into a second insulating layer.
7. The electronic device of claim 5 wherein the conductive layer extends at least partially into a second insulating layer.