A
field emission display (
FED) is a
flat panel display technology that uses large-area
field electron emission sources to provide electrons that strike colored
phosphor to produce a color image. In a general sense, an FED consists of a matrix of
cathode ray tubes, each tube producing a single sub-pixel, grouped in threes to form red-green-blue (RGB)
pixels. FEDs combine the advantages of CRTs, namely their high contrast levels and very fast response times, with the packaging advantages of
LCD and other flat panel technologies. They also offer the possibility of requiring less power, about half that of an LCD system.