Patent ID: 7465987

Claim:
A trench transistor comprising: trenches in a transistor array isolated from one another by a mesa region; a field electrode arrangement, arranged in the trenches, having at least one field electrode which is spaced from the mesa region and the gate electrode by an insulation structure and which is electrically conductive; a voltage divider having at least one voltage divider element and at least one subvoltage tap is formed in the same or another semiconductor body or in a wiring area, the voltage divider providing a subvoltage, situated between the potential of the source regions and the potential of the drain region, on the at least one subvoltage tap; a respective field electrode is electrically connected to a respective subvoltage tap, and wherein the voltage divider elements are in the form of floating spaced apart semiconductor zones, extending to the surface of the semiconductor body, of the second conduction type in the semiconductor body, the semiconductor zones being electrically connected to a respective field electrode, arranged at increasing depth in the semiconductor body, via a subvoltage tap on the semiconductor zone with increasing spacing from the transistor array.