3.3v vs 5v LCD

Other Hardware General Electronics
1

So, I have an UNO and a raspberry pi. I want one LCD to use for projects with both of them. Do I want a 3.3v LCD or a 5v LCD?

It looks like I can use a 5v LCD with the pi with no problems, is that something special about LCDs or does it apply to most components?

I understand there is a difference between voltage for powering and voltage for logic, but am not entirely sure how or why they differ, especially if they all come together on a common ground.

Thanks for any explanation! I am fairly green here.

2

Your lucky if your 5V LCD works okay with the RPi. I have a couple of 5V LCD's and neither will work on a 3.3V Arduino.
5V are cheaper and more abundant than 3.3V LCD's

3

Some chips can be damaged if you power them at 3.3V then apply 5V signals to their data inputs.