Patent ID: 8531011
Filing Date: 2013-09-10
Classification: H01L,Y02E

Abstract:
1. A protective structure comprising: a semiconductor substrate having a doping of a first conductivity type; a semiconductor layer over the semiconductor substrate; a buried layer having a doping of a second conductivity type arranged in a first region of the semiconductor layer and at the junction between the semiconductor layer and the semiconductor substrate; a first dopant zone having a doping of a first conductivity type arranged in the first region of the semiconductor layer above the buried layer; a second dopant zone having a doping of a second conductivity type arranged in a second region of the semiconductor layer; an electrical insulation arranged between the first region and the second region of the semiconductor layer wherein the electrical insulation is arranged from the surface of the semiconductor layer at least as far as the semiconductor substrate; and a common connection device for the first dopant zone and the second dopant zone.