Patent ID: 11973075
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 11:
12. An integrated circuit device, comprising:
a semiconductor body, wherein the semiconductor body has a first side and a second side on opposite faces of the semiconductor body;
a first metal interconnect structure on the first side, wherein the first metal interconnect structure comprises a first plurality of metallization layers in a first stack;
a second metal interconnect structure on the second side, wherein the second metal interconnect structure comprises a second plurality of metallization layers in a second stack;
a VSS rail and a VDD rail in the first metal interconnect structure, wherein the VSS rail and the VDD rail are configured to power a circuit;
an I/O terminal for the circuit, wherein the I/O terminal is connected to an I/O wire in the second metal interconnect structure; and
an ESD protection device for the circuit comprising a pull up diode and a pull down diode, wherein the pull up diode and the pull down diode are in the semiconductor body, the pull up diode is connected to the VDD rail through a first plurality of contact plugs on the first side and a first plurality of vias connecting between each adjacent pair of the first plurality of metallization layers, and the pull down diode is connected to the VSS rail through a second plurality of contact plugs on the first side and a second plurality of vias connecting between each adjacent pair of the first plurality of metallization layers;
wherein two of the first plurality of contact plugs are on opposite sides of a first gate structure; and
two of the second plurality of contact plugs are on opposite sides of a second gate structure.