Patent ID: 8044306
Filing Date: 2011-10-25
Classification: H05K,Y10T

Abstract:
1. A wiring board comprising: a base substrate; a conductive pattern formed on the base substrate; an insulation layer formed on the conductive pattern and the base substrate and comprising a resin-impregnated inorganic cloth; a conductive pattern formed on the insulating layer; a via formed in the insulation layer and connecting the conductive pattern formed on the base substrate and the conductive pattern formed on the insulating layer; and a through-hole comprising a plating film and a resin filling an interior space surrounded by the plating film of the through-hole, the plating film of the through-hole being connected to the conductive pattern formed on the base substrate, wherein the through-hole is penetrating through the base substrate and covered with the insulation layer, and the through-hole has an aspect ratio in a range of 2 to 5 and a hole diameter in a range of 10 μm to 150 μm.