Patent ID: 7253459

Claim:
A semiconductor device including a semiconductor body comprising a source region and a drain region of a first conductivity type, having therebetween a channel-accommodating region, the drain region comprising a drain drift region ( 14 ) and a drain contact region, with the drain drift region between the channel-accommodating region and the drain contact region, and the drain drift region being doped to a lesser degree than the drain contact region, an insulated gate separated from the channel-accommodating region by a gate insulating layer, and a localized region in the drain drift region juxtaposed with the channel-accommodating region, the localized region comprising alternating stripes of the first conductivity type and a second, opposite conductivity type, which stripes extend laterally alongside the channel accommodating region and away from the gate, the dimensions and doping levels of the stripes being such that the localized region provides a voltage-sustaining space-charge zone when depleted.