field emission display definition hardware
(FED) A type of flat panel display
in which field emitting cathodes bombard a phosphor coating causing it to emit light.
A field emission display is similar to a cathode ray tube
but only a few millimeters thick. They use a large array of fine metal tips or carbon nanotubes (which are the most efficient electron emitters known), to emit electrons through a process known as field emission. Many of these are behind each phosphor dot so FEDs do not display dead pixels like LCDs even if 20% of the emitters fail. Sony is researching FED because it is the flat-panel technology that comes closest to matching the picture of a CRT.