Hi,
I mean the channel area of mos. Under some circumstances, contact and via are placed directly on the gate of mos in anti-radiation application for an example. Many design rules also mention that it is not recommended to place contact on gate.
Thanks.
Re: why not place contact directly on the gate of transistor
You know that Cgs is significant in MOSFET, if you connect the driver directly to the MOSFET gate without a resistor, you will make the driver output overloaded or even shortcircuited and it must be blown out.