Patent ID: 9153549
Filing Date: 2015-10-06
Classification: H01L,H05K

Abstract:
1. A semiconductor device to be mounted on a printed wiring board, the semiconductor device comprising: a semiconductor chip including a predetermined semiconductor integrated circuit and an external connection pad configured to connect the semiconductor integrated circuit to an external circuit; an interposer made of silicon or glass; a surface circuit pattern formed on one surface of the interposer, the surface circuit pattern including: a post array including a plurality of conducting paths and insulating resin insulating the conductive paths from each other, the post array being arranged such that the conductive paths extend in a direction intersecting with the surface of the interposer, the conducting paths being connected to the junction pads and to be connected to the printed wiring board; and a by-pass capacitor for a power supply system of the semiconductor chip provided on the surface of the interposer on which the surface circuit pattern is formed and in an area of the surface of the interposer overlapping with a mounting area of the semiconductor chip, wherein the by-pass capacitor includes a first surface electrode, a second surface electrode, and a thin film dielectric layer, the thin film dielectric layer being formed over the first surface electrode, and the second surface electrode being formed over the thin film dielectric layer, wherein the external connection pad included in the semiconductor chip includes: wherein each of the first and second surface electrodes is respectively connected to one of the pair of external connection pads for the I/O power source by soldering.