Patent ID: 8149585

Claim:
An interposer comprising: a silicon substrate having a polished surface and a plurality of through holes; a capacitor formed on substantially an entire face of the polished surface of the silicon substrate, the capacitor comprising a lower electrode formed on the polished surface of the silicon substrate, a dielectric layer formed on the lower electrode, and an upper electrode formed on the dielectric layer, a plurality of through-hole conductors formed through the silicon substrate and electrically connected to the capacitor, the plurality of through-hole conductors comprising a through-hole conductor for signal, a through-hole conductor for power supply, and a through-hole conductor for ground, a plurality of through-hole lands which are formed on the polished surface of the silicon substrate and comprise a through-hole land for signal and a through-hole land for ground; a plurality of via conductors which are formed through the dielectric layer and comprise a via conductor for signal, a via conductor for power supply, and a via conductur for ground; and a plurality of via lands which are formed on the dielectric layer and comprise a via land for signal and a via land for power supply, wherein the through-hole conductor for signal is electrically connected to the through-hole land for signal, to the via conductor for signal, and to the via land for signal, the through-hole land for signal is electrically insulated from the lower electrode by a first clearance, the via land for signal is electrically insulated from the upper electrode by a second clearance, the through-hole conductor for power supply is electrically connected to the lower electrode, to the via conductor for power supply, and to the via land for power supply the via land for power supply is electrically insulated from the upper electrode by the second clearance, the through-hole conductor for ground is electrically connected to the through-hole land for ground, to the via conductor for ground, and to the upper electrode, and the through-hole land for ground is electrically insulated from the lower electrode by the first clearance.