Patent ID: 11967639
Assignee: INFINEON TECHNOLOGIES AG
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 19:
20. A method of ESD protection using a silicon controlled rectifier (SCR) comprising an n-doped region disposed over an insulating layer and coupled to a first trigger node via an n-doped tap region disposed adjacent to the n-doped region, a p-doped region disposed over the insulating layer adjacent to the n-doped region and coupled to a second trigger node via a p-doped tap region adjacent to the p-doped region, wherein the n-doped region and p-doped region form a first diode, segmented p-type anode regions disposed over the insulating layer and connected to an anode node, each of the segmented p-type anode regions being surrounded by the n-doped region, and segmented n-type cathode regions disposed over the insulating layer and connected to a cathode node, each of the segmented n-type cathode regions being surrounded by the p-doped region, the method comprising:
detecting an ESD pulse using a trigger device;
activating the SCR via the trigger device upon detection of the ESD pulse; and
conducting an ESD current via the SCR.