Patent ID: 8450814

Claim:
A lateral double-diffused metal-oxide-semiconductor transistor, comprising: a substrate structure; a field oxide defining a gate/source/body opening and a drain opening over a gate/source/body area and an extended drain area on the substrate structure, respectively; a gate oxide over the gate/source/body area on the substrate structure; polysilicon spacer gates on the gate oxide in the gate/source/body opening, the polysilicon spacer gates being separated by a space over a portion of the gate oxide; a polysilicon extended drain contact in the drain opening; a body region of a first conductivity in the substrate structure, the body region being self-aligned about outer edges of the polysilicon spacer gates; a source region of a second conductivity in the body region, the source region being self-aligned about inner edges of the polysilicon spacer gates; an extended drain region of the second conductivity in the substrate structure, the extended drain region being located under the polysilicon extended drain contact and self-aligned with respect to the polysilicon spacer gates; a drift region in the substrate structure between the body region and the extended drain region; and a channel region being formed in the body region between the source region and the drift region.