5

Question 1

What is the first step in manufacturing process

Answer 1

Cleaning process

Question 2

What is the 2nd step in manufacturing

Answer 2

Oxidization

Question 3

What happens in oxidization during manufacturing

Answer 3

Silicon dioxide grows on top.

Question 4

3rs step in manufacturing

Answer 4

Photoresist

Question 5

What happens in photoresist

Answer 5

It is a sacrificial organic polymer sensitive to light. There is a spot of liquuid on top and it gets spun making it distribute acorss the biscuit shape wafer.

Question 6

4th step of manufacturing

Answer 6

Lithography

Question 7

5rh step in manufacturing

Answer 7

Etch.

Question 8

What is etching used with

Answer 8

Hydroflouric acid (HF)

Question 9

What does HF attack in etching

Answer 9

Silicon dioxide on wafer layer.

Question 10

6th step in manufacturing

Answer 10

Strip photoresist. Hardened photoresist gets washed off from striping solution.

Question 11

7rh step in manufacturing

Answer 11

N-well is formed with diffusion or ion implantation

Question 12

What is purpose of dioxide layer

Answer 12

Protects substrate from showering diffusion and acts as a barrier.

Question 13

Step 8

Answer 13

Remove dioxide layee

Question 14

Step 9

Answer 14

Deposit thin layer of gate oxide and polhsilicon

Question 15

Step 10

Answer 15

Polysilicon patterning. Use same lithography process to pattern Polysilicon