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Electronics and Communication Engineering - Electronic Devices and Circuits - Discussion

Discussion Forum : Electronic Devices and Circuits - Section 5 (Q.No. 42)
Electronic Devices and Circuits
42.
Consider the following statements.
  1. Etching
  2. Exposure to UV radiation
  3. Stripping
  4. Developing
After a wafer has been coated with photo resist the correct sequence of these steps in photolithography is
2, 4, 3, 1
2, 4, 1, 3
4, 2, 1, 3
3, 2, 3, 1
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
2 comments Page 1 of 1.
Sephirim said:   6 years ago
Expose first, before developing. Option B is the correct answer.
Matt said:   8 years ago
Shouldn't it be Exposure to radiation first to allow marking of the design followed by developing?

(2, 4, 1, 3) ?
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