Patent ID: 7211860

Claim:
A semiconductor component comprising: a semiconductor material region comprised of a trench structure transistor arrangement including a transistor cell array, the transistor cell array including a plurality of trench transistors arranged in a strip-type fashion in a plurality of trench structures; the trench transistors comprising gate regions formed in the interior of the trench structures and electrically insulated from wall regions of the respective trench structures by an insulating oxide layer; the trench transistors further comprising source regions and body regions arranged in mesa regions located between adjacent trench structures in the semiconductor material region, the source regions being disposed within respective body regions and having a common surface region with the respective body regions; and a first lateral edge region of the transistor cell array wherein the insulating oxide layer in lateral end regions of the respective trench structures has a first layer thickness in the form of a field oxide, and the insulating oxide layer outside the first lateral edge region has a second layer thickness in the form of a gate oxide, the first layer thickness greater than the second layer thickness.