Patent ID: 8912600

Claim:
A lateral double-diffused metal oxide semiconductor (LDMOS) transistor, comprising: a) an n-doped deep n-well (DNW) region on a substrate; b) a field oxide (FOX) for isolation of the LDMOS transistor, wherein the FOX comprises a first local oxidation of silicon (LOCOS); c) a gate oxide and a drain oxide between a source region and a drain region of the LDMOS transistor, the gate oxide being adjacent to the source region, the drain oxide being adjacent to the drain region, wherein the drain oxide comprises a second LOCOS that is different than the first LOCOS such that a thickness of the drain oxide is different than a thickness of the FOX; d) a conductive gate over the gate oxide and a portion of the drain oxide; e) a p-doped p-body region in the source region; f) an n-doped drain region in the drain region, the n-doped drain region ending under the drain oxide; g) a first n-doped n+ region and a p-doped p+ region adjacent thereto in the p-doped p-body region of the source region; and h) a second n-doped n+ region in the drain region.