Patent ID: 8530996
Filing Date: 2013-09-10
Classification: H01L

Abstract:
1. A semiconductor device comprising: a high-side field-effect transistor including a high-side drain electrode, a high-side gate electrode, and a high-side source electrode; a first low-side field-effect transistor including a first low-side drain electrode, a first low-side gate electrode and a first low-side source electrode, the high-side source electrode and the first low-side drain electrode being shared as a single source and drain electrode; a second low-side field-effect transistor including a second low-side drain electrode, and a second low-side gate electrode; a semiconductor substrate on which the high-side drain electrode, the high-side gate electrode, the single source and drain electrode, the first low-side gate electrode and the first low-side source electrode are formed; an insulating layer formed on the high-side drain electrode, the high-side gate electrode, the single source and drain electrode, the first low-side gate electrode, the first low-side source electrode, the second low-side drain electrode, and the second low-side gate electrode, the insulating layer having first holes which are formed above the second low-side drain electrode and the single source and drain electrode to penetrate through the insulating layer; a first wiring connected to the second low-side drain electrode and the single source and drain electrode through the first holes; a third low-side field-effect transistor including a third low-side gate electrode and a second low-side source electrode; and a second wiring connecting the first low-side source electrode and the second low-side source electrode, wherein the first low-side source electrode and the second low-side source electrode are connected by the second wiring via second holes formed above the first low-side source electrode and the second low-side source electrode to penetrate through the insulating layer, wherein the high-side drain electrode, the high-side gate electrode, the single source and drain electrode, the first low-side gate electrode, the first low-side source electrode, the second low-side gate electrode, the second low-side drain electrode, the third low-side gate electrode, and the second low-side source electrode are sequentially arranged while being interposed by gaps, respectively.