Test and Analysis of the ESD Robustness for the Diode-Connected a-IGZO Thin Film Transistors

In this work, wafer level TLP testing is applied to amorphous indium-gallium-zinc-oxide (a-IGZO) thin-film transistors (TFTs) to study the factors of their electrostatic discharge (ESD) robustness. Two kinds of TFTs with N
₂
O and O
₂
treatments are subject to the ESD test. It is found that the contact resistance of the TFTs, instead of the channel quality, dominates the ESD power for them to be damaged.