Patent ID: 11764206

Abstract:
In an integrated circuit (IC) fabrication process, devices or sub-circuits are fabricated in respective first and second electrical isolation regions. A back-to-back (B2B) diodes sub-circuit is fabricated in a third electrical isolation region, which includes a first diode whose cathode is connected with a first terminal and whose anode is connected with a second terminal, and a second diode whose anode is connected with the first terminal and whose cathode is connected with the second terminal. Electrostatic discharge protection is provided to the first and second electrical isolation regions by electrically connecting the first terminal of the B2B diodes sub-circuit with a VSS power supply terminal of the first device or sub-circuit and the second terminal of the B2B diodes sub-circuit with a VSS power supply terminal of the second device or sub-circuit. Thereafter, the first device or sub-circuit and the second device or sub-circuit are electrically connected.