1. Stick diagrams are those which convey layer information through?
A. thickness
B. color
C. shapes
D. layers
Answer: B
Stick diagrams are those which convey layer information through color codes. Thickness is not considered in this stick diagram representation.
2. Which color is used for n-diffusion?
A. red
B. blue
C. green
D. yellow
Answer: C
The green color is used to show the presence of the n-diffusion layer. The n-type diffusion will dope the source or drain region in the p-well region.
3. Which color is used for an implant?
A. red
B. blue
C. green
D. yellow
Answer: D
Yellow color is used to represent the implant layer.
4. Which color is used for contact areas?
A. red
B. brown
C. black
D. blue
Answer: C
Black color is used to represent contact areas. This is the part where two different touches or cross each other.
5. Which color is used for polysilicon?
A. brown
B. red
C. white
D. orange
Answer: B
Red is used to represent polysilicon layers. It is a semi-conductor-like material and is a hyper pure form of silicon.
6. Which color is used for polysilicon 2 layer?
A. blue
B. brown
C. orange
D. white
Answer: C
Orange color is used to represent the polysilicon-2 layer.
7. Which color is used for buried contact?
A. black
B. white
C. green
D. brown
Answer: D
Brown color is used to represent buried contact. Buried contact is most widely used, subject to fewer design rule restrictions are smaller in area.
8. n and p transistors are separated by using __________
A. differentiation line
B. separation line
C. demarcation line
D. black line
Answer: C
The demarcation line separates n and p transistors. The demarcation line is similar to the dotted line in brown.
9. _______ layer should be over ______ layer.
A. n-type, polysilicon
B. polysilicon, n-type
C. p-type, n-type
D. n-type, p-type
Answer: B
The polysilicon layer should be over the n-type layer. This is the standard pattern used in stick diagram representation.
11. Implant is represented using ___________
A. black, dark line
B. black, dotted line
C. yellow, dark line
D. yellow, dotted line
Answer: D
The implant is represented using yellow color dotted lines. It is drawn in the middle of the nMOS or pMOS wherever the implant is used.
