Sometimes. All TV's now are 'flat panel' TV's, but a flat panel display could also mean a computer monitor (no TV tuner) or a commercial display panel for installation purposes (no tuner either).
No. Flat panel is when the screen is less than 10 inches deep. That makes them lightweight and easily mounted on a wall. There are 4 kinds: LCD (Liquid Crystal Display,) LED (Light Emitting Diode)...
The only one I can think of is you cannot show a "true black" color on any back-lit display, such as an LCD.
There are three basic types of flat panel display: plasma, LED and LCD. Not every...