Patent ID: 8426914
Filing Date: 2013-04-23
Classification: H01L

Abstract:
1. A semiconductor device integrated with a converter, comprising: a semiconductor substrate, having a first conductive type, wherein the semiconductor substrate has a high-side transistor device region and a low-side transistor device region; at least a high-side transistor device, disposed in the high-side transistor device region, the high-side transistor device comprising: a high-side drain metal layer, disposed on the semiconductor substrate of the high-side transistor device region, and the high-side drain metal layer being electrically connected to the doped drain region; a high-side gate metal layer, disposed on the semiconductor substrate of the high-side transistor device region, and the high-side gate metal layer being electrically connected to the high-side gate conductive layer; a common metal layer, disposed under the semiconductor substrate, wherein the common metal layer electrically connects the doped high-side source region and the semiconductor substrate; at least a low-side transistor device, disposed in the low-side transistor device region, and the low-side transistor device comprising: a low-side source metal layer, disposed on the semiconductor substrate of the low-side transistor device region, and the low-side source metal layer being electrically connected to the source of the low-side transistor device; a low-side gate metal layer, disposed on the semiconductor substrate of the low-side transistor device, and the low-side gate metal layer being electrically connected to the gate of the low-side transistor device; and a first interlayer dielectric layer, disposed between the semiconductor substrate and the high-side drain metal layer and between the semiconductor substrate and the low-side source metal layer.