Patent ID: 7312522

Claim:
A driving unit of a semiconductor device including a semiconductor chip mounted on a substrate, the driving unit comprising: a mounting member, and a power source supplying section for supplying a power source, said mounting member including: a wiring substrate for inputting and/or outputting of actuating signals with respect to the semiconductor device; a power supplying conductor plate and a ground conductor plate for supplying a power source to said semiconductor device; and insulators, respectively provided between each of the wiring substrate, the power supplying conductor plate, and the ground conductor plate, said wiring substrate including electrode pads for inputting/outputting of the actuating signals, said power supplying conductor plate and said ground conductor plate including connecting electrodes, and the electrode pads and the connecting electrodes being provided so as to, in a same mounting plane, correspond to an electrode layout in the substrate of the semiconductor device, and said power source supplying section supplying the power source to said semiconductor device that is mounted on said mounting member, via the power supplying conductor plate and the ground conductor plate, wherein the wiring substrate, the power supplying conductor plate, and the ground conductor plate are provided such that the wiring substrate is closest to the mounting plane, the power supplying conductor plate and the ground conductor plate are subject to press-fit of pin-shaped conductors that penetrate the wiring substrate, and top ends of the pin-shaped conductors and the top surface of the wiring substrate are in a same plane.