Yes. Long gone are the days of requiring HV supplies for monitors. Even when components need HV, they are now usually supplied by onboard converters (that's much cheaper if nothing else).
And yeah - most "AC" devices are usually 12V DC or less internally though 24V DC is not uncommon.
I was going to re-reply about contrast and and that "home" screens may not have the correct polarisation nor be suitably ruggedised for automotive use (vibration, heat. humidity, UV) and suggest bypassing a display's ac-dc conversion.
As I stated or inferred earlier - at best, inverters usually add AT LEAST 20% inefficiency (losses) compared to using DC or dc-dc converters.