Patent ID: 11916063
Assignee: SK HYNIX INC.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. An electrostatic discharge (ESD) protection device connected between a pad and a ground terminal, comprising:
a diode electrically connected with the pad;
a gate ground NMOS (GGNMOS) transistor electrically connected between the diode and the ground terminal, the GGNMOS including a gate and a source electrically connected to the ground terminal, a drain electrically connected to the diode, and a first resistor generated by an impurity region between the gate and the source; and
at least two parasitic bipolar transistors generated between the pad and the ground terminal, the parasitic bipolar transistors generated between a junction for forming the diode and junctions for forming the GGNMOS transistor, when the ESD event is generated in the pad.