Patent ID: 7800127
Filing Date: 2010-09-21
Classification: H01L

Abstract:
1. An ESD protection structure, comprising an pnpn configuration in the form of a BSCR that includes an n+ collector connected to an n-sinker and n-buried layer (NBL), a base, and an emitter (defining a cathode terminal), as well as an additional p+ region defining an anode, or in the form of an NLDMOS-SCR device that includes an n+ drain in an n-well, an n+ source (defining a cathode terminal) and a p+ bulk contact region in a p-well, as well as an extra p+ region defining an anode, the ESD protection structure further comprising a cathode blocking junction electrode (also referred to as cathode control electrode) defined by an additional n+ region with blocking junction contact and located between the p+ anode and the base in the BSCR or an additional p+ region in the p-well of the NLDMOS-SCR.