Patent ID: 9401355
Filing Date: 2016-07-26
CPC Classification: H01L

Claim Text:
1. A semiconductor device, comprising: a semiconductor body including a first trench region extending into the semiconductor body from a first surface of the semiconductor body; an ESD (electrostatic static discharge) protection diode including an anode region and a cathode region; and wherein one of the anode region and the cathode region is at least partly arranged in the first trench region, and the other one of the anode region and the cathode region includes a first semiconductor region adjoining the one of the anode region and the cathode region from outside of the first trench region, the semiconductor device further comprising a field plate arranged on the first surface, the field plate overlapping a pn-junction comprising a p-doped region of the anode region abutting an n-doped region of the cathode region at the first surface, a contact located at the first surface and electrically connected to the one of the anode region and the cathode region at the first surface, and wherein the field plate and the contact are electrically connected.