EcrioniX Labs
VLSI / CMOS

CMOS STRUCTURE

Interactive guide to MOSFET physics, Stick Diagrams, and Standard Cells.

CROSS-SECTION VIEW
P-Substrate (Body) n+ Source n+ Drain GATE (Poly)

NMOS Operation

Gate Voltage (Vgs) 0.0 V

When Vgs > Vth (Threshold Voltage), positive charges on the gate repel holes in the P-substrate and attract electrons, forming an N-Channel (Inversion Layer) that allows current to flow.

Transistor State
OFF (Cut-off)