Gate-all-around fin device

摘要

A gate-all around fin double diffused metal oxide semiconductor (DMOS) devices and methods of manufacture are disclosed. The method includes forming a plurality of fin structures from a substrate. The method further includes forming a well of a first conductivity type and a second conductivity type within the substrate and corresponding fin structures of the plurality of fin structures. The method further includes forming a source contact on an exposed portion of a first fin structure. The method further comprises forming drain contacts on exposed portions of adjacent fin structures to the first fin structure. The method further includes forming a gate structure in a dielectric fill material about the first fin structure and extending over the well of the first conductivity type.

主权项

1. A diffused metal oxide semiconductor (DMOS) device comprising:
a substrate of a first conductivity type; a doped well located in the substrate of the first conductivity type; a doped well ring of a second conductivity type and enclosing a central well of the first conductivity type; a first doped fin contact region of the first conductivity type forming a source contact to a gate structure over the central well of the first conductivity type; a second doped fin contact region of the second conductivity type forming drain regions to the gate structure, the second doped fin contact region being formed in the over the doped well ring; and the gate structure over an insulating layer above the central well configured vertically around a fin region of the first doped fin contact region and laterally extending in the direction of and crossing over onto the doped well ring.