Look up: Backlight

1. Backlight
   A built-in light source transmitted from the rear of the display, to allow them to be read.
   Found on http://www.sony.co.uk/glossary/ShowGloss
   
   
2. backlight
   (from the article `liquid crystal display`) The backlight of LCDs typically accounts for more than 80 percent of the display`s power consumption. For mobile complex displays, battery lifetime ...
   Found on http://www.britannica.com/eb/a-z/b/4
   
   
3. Backlight
   A light which is generally mounted behind a subject to light the subject's hair and shoulders without illuminating a subject's front. (Lighting)
   Found on http://www.filmland.com/glossary/Diction
   
   
4. Backlight
   A `backlight` is a form of illumination used in liquid crystal displays (LCDs). As LCDs do not produce light themselves (unlike for example Cathode ray tube (CRT) displays), they need illumination (ambient light or a special light source) to produce a visible image. Backlights illuminate the LCD fro...
   Found on http://en.wikipedia.org/wiki/Backlight