The more correct term would be Digital Signage displays, eg. [1] - they often run on high voltages though so it's better to be sure when screwing around with them
I've been buying the Samsung QB series at work lately. They're advertised as signage, and do function in more or less "dumb" mode - they work fine with no network connection. But they do run Tizen OS, which is less dumb than I'd like. Also worth mentioning that they're real nice, but also pretty spendy.
