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field emission display

field emission display in Technology
(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.
The Free On-line Dictionary of Computing, © Denis Howe 2010
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