A backlight is the form of illumination used in a liquid crystal display (LCD). Backlights differ from frontlights because they illuminate the LCD from the side or back, whereas frontlights are in front of the LCD. They are used in small displays to increase readability in low light conditions, and in computer displays and LCD televisions to produce light in a manner similar to a CRT display. Light source types The light source can be: Incandescent light bulb One or more light-emitting diod… (More on Backlight)