Electronic Devices & Circuits - GATE practice papers - Electronics & Communication for Q. 492

Q.  Which process plays a crucial role in transforming the pattern or layout on the working mask of silicon wafer in an IC fabrication mechanism? (Marks : 01)
- Published on 19 Oct 15

a. Wafer Cleaning
b. Mask Making
c. Epitaxy
d. Photo-lithography

ANSWER: Photo-lithography
 
Photo-lithography basically deals with the photo-engraving technique where the silicon wafer is coated with a photo-resist along with an exposure to UV light.

However, the exposed portions of resist are completely removed by keeping the unexposed areas at an intact or an integral level

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    Discussion

  • Indra kumar raj   -Posted on 07 May 19
    Please hindi may dijie

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