Patent ID: 7589394
Filing Date: 2009-09-15
Classification: H01L,H05K

Abstract:
1. An interposer comprising: a substrate body having first and second through-holes that pass through from a first surface to a second surface of the substrate body; a capacitor formed by laminating a dielectric layer and a second electrode portion on a first electrode portion, said capacitor is formed in at least a partial area of an inner surface of the first through-hole, an inner surface of the second through-hole, and the first surface of the substrate body; an insulation layer formed by filling insulation material in a space within the first through-hole surrounded by the second electrode portion; a first post which passes through the insulation layer in the first through-hole, one end of the first post being electrically connected to the first electrode portion, the first post being electrically insulated from the second electrode portion via the insulation layer; and a second post, which fills in a space within the second through-hole, is surrounded by the second electrode portion and is electrically connected to the second electrode portion by contacting the second electrode portion at the peripheral surface, the second post being electrically insulated from the first electrode portion.