Patent ID: 8592274

Claim:
A method for manufacturing a lateral double-diffused metal-oxide-semiconductor (LDMOS) transistor device, comprising: forming a drift drain region on a semiconductor substrate of a first conductivity type, wherein the drift drain region is of a second conductivity type opposite the first conductivity type; forming a source region, body region, and drain pickup region in the drift drain region, wherein the body region is of the first conductivity type, the source region is of the second conductivity type but more heavily doped than the drift drain region, and the drain contact pickup region is of the second conductivity type; forming a body pickup region on the body region laterally adjacent the source region, wherein the body pickup region is of the first conductivity type but more heavily doped than the body region; forming an active channel in the body region between the source region and a junction between the body region and the drift drain region; forming an accumulation region in the drift drain region between the junction and the drain contact pickup region; and forming an enhancement implant region in a portion of the accumulation region proximate the junction wherein the enhancement implant region contains additional dopants of the second conductivity type as the drift drain region, wherein there is a gap between the implant region and the junction.