Patent ID: 9070637
Filing Date: 2015-06-30
Classification: H01L

Abstract:
1. A substrate comprising: a base substrate having a first surface and a second surface opposite to each other; a via hole formed in the base substrate, the via hole being open at the first and second surfaces, the via hole having an internal surface in the base substrate; a first insulating layer including a thermal oxidation layer, the thermal oxidation layer being formed on the first surface and the internal surface; a second insulating layer being connected with the first insulating layer, and the second insulating layer being disposed on the second surface of the base substrate; a device circuit being formed above the first surface of the base substrate through the first insulating layer; a conductive body being disposed in the via hole, the conductive body being surrounded by the first insulating layer and including a protruding section which protrudes from the second surface of the base substrate and is adjacent to the second insulating layer; and a wiring layer being electrically connected to the conductive body, the wiring layer being disposed above the first surface through the first insulating layer, wherein a first thickness of the first insulating layer disposed on the first surface and a second thickness of the first insulating layer disposed on the internal surface are the same.