Patent ID: 7989879

Claim:
An LDMOS transistor provided in a semiconductor substrate, the LDMOS transistor comprising a gate electrode, which extends over a channel region, a source region and a drain region being mutually connected through the channel region, the drain region comprising a drain contact region and a drain extension region extending from the drain contact region towards the channel region, the LDMOS transistor further comprising a first insulation layer, which at least extends over a first portion of the channel region adjacent to the source region, wherein a second insulation layer is provided laterally adjacent to the first insulation layer, the second insulation layer having a greater thickness than the first insulation layer, wherein at least a portion of the second insulation layer is at the same level as the first insulation layer, wherein the second insulation layer extends only over at least a portion of the drain extension region, wherein the gate electrode does not extend over the second insulation layer.