Patent ID: 8704301
Filing Date: 2014-04-22
Classification: H01L

Abstract:
1. A three-dimensional active device structure, comprising: a downwardly extended source diffusion having a first conductivity type; a downwardly extended body diffusion having a second conductivity type, and laterally positioned to the source diffusion; a downwardly extended deep body diffusion having a second conductivity type, and laterally adjoining the body diffusion; a downwardly extended gate electrode, laterally positioned in proximity to at least part of the body diffusion and insulated from the body diffusion; a downwardly extended drain, positioned so that the body diffusion is laterally positioned between the drain and the source diffusion; wherein the source diffusion, body diffusion, deep body diffusion, gate, and drain jointly define a DMOS-type device structure at a horizontal plane; and wherein the structure has predominately horizontal current flow at the horizontal plane.