$areacontact

出自 DDCC TCAD TOOL Manual
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$areacontact is the command to make the setting of contact area more flexible. The command is used to assign the metal/semiconductor surface contact within assigned area range. The format is

$areacontact
N_contacts
Contact_type  Shape  f1 f2 f3 f4 ...
Contact_type  Shape  f1 f2 f3 f4 ...
...
...
... repeat N_contacts  
  • type : 21 is Gate, 3 is source, 4 is drain. 9 is for fix thermal boundary, 91 is thermal diffusive boundary
shape now only support 1, which is rectangular shape  (f1,f2,f3,f4) = (x_min,x_max, y_max,y_min) 

For example:

$areacontact
2
21  1  2.0 20.0  4.2 4.0 
4   1  22.0 30.0 3.2 3.0


The $areacontact setting in GUI interface is here
1. After setting up the general structure, press Set Area Contact.
2D areacontact fig1.jpg

2. Press Add new epitaxial ranges and set up the contact type to Gate with its ranges.
2D areacontact fig2.jpg

3. Set another contact type to Drain and define its ranges.
2D areacontact fig3.jpg

4. As you can see, there are two new area contacts as needed!
2D areacontact fig4.jpg