I need some help w/this layout stuff. It seems that a "diffusion" layer isn't what I thought it was. Take a look at this NAND gate:
I notice that the larger "p-diffusion" and "n-diffusion" make a short between 3 contacts for the pmos and 2 contacts for the nmos. These are not supposed to be depletion type MOSFETs, so I would expect Vdd to be connected to a p-diffusion that is the source of the "B" pmos, then there should be the n-well under the "B" poly. Then another diffusion for both pmoses' drains. Then more n-well under the "A" poly, and a separate p-diffusion for the "A" pmos's source. Instead, what we have is a monolithic p-diffusion running between the 3 contacts and under the polies.
The nmoses have a similar problem. Not only that, but there's this gap between the polies over the n-substrate, so there's no chance of any field affecting that area. I am so lost.
I notice that the larger "p-diffusion" and "n-diffusion" make a short between 3 contacts for the pmos and 2 contacts for the nmos. These are not supposed to be depletion type MOSFETs, so I would expect Vdd to be connected to a p-diffusion that is the source of the "B" pmos, then there should be the n-well under the "B" poly. Then another diffusion for both pmoses' drains. Then more n-well under the "A" poly, and a separate p-diffusion for the "A" pmos's source. Instead, what we have is a monolithic p-diffusion running between the 3 contacts and under the polies.
The nmoses have a similar problem. Not only that, but there's this gap between the polies over the n-substrate, so there's no chance of any field affecting that area. I am so lost.