This blog tries to tackle this question...
Based on outward appearances are definitely deceiving when it comes to LCD and Plasma screens. Although both types of screens are flat and thin, they utilise different technology in an attempt to deliver similar results.
So, what is digital signage?
There are many interpretations as to what digital signage is, but the more simplistic description is ‘a system that puts messaging on a screen. The form of the screen, message and system vary depending on the application.’