Deposition (CVD and PVD)
Which correctly describes the basic way an LSI is built in manufacturing?
- AParts are glued together
- BSteps such as deposition, lithography and etching are repeated dozens of times to build up layers
- CThe wafer is processed just once to finish it
Show answer and explanation
Answer: B. Steps such as deposition, lithography and etching are repeated dozens of times to build up layers
An LSI is made by repeating steps such as depositing films (deposition), transferring patterns (lithography), removing unwanted material (etching), introducing impurities and cleaning, dozens or hundreds of times, building up transistors and many layers of wiring.
- A. The interior of an LSI is not glued together but built by repeated steps.
- B. Correct. Steps are repeated to build up layers.
- C. It cannot be made in a single processing step.