Introduction to VLSI Design

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Example: CMOS Inverter Layout

Covering Contacts with Metal-1


Active contacts in fact only define holes in the oxide (connection terminals). The actual connection to the corresponding diffusion region is made by the Metal layer.

1. Select layer Metal-1 from the LSW

Metal-1

2. Draw two rectangles 1.2u wide to cover the contacts

Metal-1 on Contacts

Note that Metal-1 has to extend over the contact in all directions by at least 0.3u (1 lambda).



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Last Updated by Ilhan Hatirnaz on 11/7/1998