Hello:
I have three (one purchased back in the mid '80s) and they all still are going strong. If a LCD segment of the display fails you usually will have most if it still working. Could make for an interesting time trying to interpret what is being displayed, but unless you expose the camera to extreme temperatures (too high or too low, but I can't tell you offhand what they are) the LCD will continue to work. That and allowing the camera to suffer a serious physical shock.
One note I will mention is this, if your entire display is fading, replace the batteries. The camera will still work for a while but dimming LCD displays is a good indicator it's time to get new ones. Don't wait til the display starts flashing 'ooo" at you.
I hope this helps.
Ed