Patent ID: 8872278
Filing Date: 2014-10-28
Classification: H01L

Abstract:
1. An apparatus, comprising: a plurality of trench metal-oxide-semiconductor field effect transistors (MOSFET) devices formed within an epitaxial layer of a substrate; a gate-runner trench disposed around the plurality of trench MOSFET devices and disposed within the epitaxial layer, the gate-runner trench being continuous; a floating-field implant defined by a well implant and disposed around the gate-runner trench, the floating-field implant having a bottom interface and at least one side interface in direct contact with the epitaxial layer, the floating-field implant defining a pn-junction with the epitaxial layer; and a polysilicon material disposed within the gate-runner trench and at least one device trench of the plurality of trench MOSFET devices, the polysilicon material being in contact with the epitaxial layer and an active area implant that is disposed in the substrate.