I'm unable to find technical specs on the life expectancy for the screen of a Nexus 7 (or any Android Tablet, for that matter).
Do you know how many total hours we can expect to get out of a tablet before it starts to die out?
FYI: I'm considering to use an Android tablet as the touch screen for an Industrial Controller. The Industrial Controller will be turned on 24/7 - which is obviously not the typical use case for a tablet - so I'm concerned that the tablet will burn out too soon (i.e. within a year or two).