Patent ID: 11961834
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 8:
9. A semiconductor device, comprising:
a first diode, wherein a first terminal of the first diode is coupled to a first voltage terminal that is configured to receive a first supply voltage, wherein the first diode is configured to direct a first part of an electrostatic discharge (ESD) current flowing between an input/output (I/O) pad and the first voltage terminal;
a second diode, wherein a first terminal of the second diode, the I/O pad, and a second terminal of the first diode are coupled to each other, and a second terminal of the second diode is coupled to a second voltage terminal that is configured to receive a second supply voltage, wherein the second diode has a first doped region that corresponds to the first terminal of the second diode and extends in a first direction; and
a third diode, wherein first and second terminals of the third diode are coupled to the first voltage terminal,
wherein the second diode and the third diode include a first semiconductor structure configured to direct a second part of the ESD current flowing between the I/O pad and the first voltage terminal.