Why Protection Glass?
LCD panels are created by sandwiching a special ‘liquid crystal’ substrate between two polarized . These sheets of glass are very thin and any pressure or force can deform the structure of the panel. When implementing interactive video walls, it is important to understand that the LCD itself cannot be touched directly without causing damage.
Touching on the LCD top surface creates deformation in it and this is what causes the rainbow coloured ripples around the point of contact as the liquid crystal alignment is disturbed. When the touch is removed the LCD will return to normal, but doing this for extended periods of time, or using excess pressure will eventually damage the LCD.
In order to maximize the life of the Interactive Video Wall and protect it from damage a protective sheet of glass must be applied over the entire surface.