Most of the televisions nowadays need mounting devices so they stay fixed on the wall, above a fireplace or other locations in your room. It is up to you how you want to mount your TV: fixed on the wall, or allowing it to tilt horizontally and/or vertically, all is possible provided you bought the proper mounting brackets for your particular TV set.
Before you go out buying the device and end up with your TV falling on the floor or with it being bigger or much smaller than your brackets, here are the main types that you need to be aware of.
The low profile mounts - these are also called flush mount brackets. They are maybe the cheapest types out there are the easiest to install. These devices will hold your TV fixed to the wall allowing no movement whatsoever. Think of these as hanging your painting on the wall, they have the very same effect.