[Perl] using single quote (') in perl one liner

[Offer Kaye]

Hi,
I want to do:
perl -ip -e 's/1'b1/VDD/' full_scan_chip.v

but can't, since the shell thinks the second ' closes the first, and
returnes:
Unmatched '.

Variations such as:
perl -ip -e "s/1'b1/VDD/" full_scan_chip.v

did nothing, and:
perl -ip -e 's/1\'b1/VDD/' full_scan_chip.v

also returned "Unmatched '."

Please help! :-)
BTW, I'm using c-shell, and can't use another shell since I'm on HP-UX, not
Linux.

Thanks,
Offer Kaye