Patent ID: 6952049

Claim:
A printed wiring substrate having a planar surface and a built-in capacitor having vertical sides on which an IC chip is mounted, said printed wiring substrate comprising a capacitor accommodation cavity selected from the group consisting of a closed-bottom cavity and a through hole cavity extending in the thickness direction of the printed wiring substrate and a capacitor disposed in said cavity, wherein the vertical sides of the capacitor and the printed wiring substrate are fixed together with an insulating resin filling a gap between the cavity and the capacitor, characterized in that: the capacitor comprises: a pair of electrodes or electrode groups; and the capacitor comprises a plurality of capacitor terminals, wherein the respective capacitor terminals are electrically connected to one or the other of the paired electrodes or electrode groups; the printed wiring substrate comprises a plurality of substrate terminals; the IC chip comprises a plurality of connection-to-capacitor terminals and a plurality of connection-to-substrate terminals; the plurality of capacitor terminals of the capacitor are respectively flip-chip-bonded directly to a plurality of connection-to-capacitor terminals of the IC chip; and the plurality of substrate terminals of the printed wiring substrate are respectively flip-chip-bonded to a plurality of connection-to-substrate terminals of the IC chip.