MOSFET Technology and IC Fabrication Process
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Questions and Answers

What is the purpose of annealing in the fabrication process of CMOS?

To fix the damage caused by adding impurities and breaking covalent bonds in the wafer structure.

What does BIST stand for in the context of VLSI design?

Built In Self Test

What does TCL stand for and what is its role in VLSI?

TCL stands for Tool Command Language, it is interpreter-based and requires a Tcl Shell to interpret scripts.

In VLSI, why is power planning considered an important stage during floorplanning?

<p>To create a power grid network for distributing power supply efficiently.</p> Signup and view all the answers

What happens to a net in VLSI design if it has no driver?

<p>It gets the value 'Z'.</p> Signup and view all the answers

What is the purpose of p-well technology in early 1960s?

<p>To get enhancement mode MOSFET</p> Signup and view all the answers

Why did the twin tub/well technology start after the 1970s?

<p>To match the threshold voltage in two devices</p> Signup and view all the answers

Why is oxidation important in IC fabrication process?

<p>SiO2 plays an important role and no other semiconductor has a native oxide like SiO2</p> Signup and view all the answers

What is the purpose of the Epitaxy method?

<p>To grow additional single crystal silicon above the original wafer surface</p> Signup and view all the answers

What is the process of adding impurities like Boron, P, and As to a silicon wafer?

<p>Ion Implantation</p> Signup and view all the answers

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