A
surface-conduction electron-emitter display (
SED) is a
display technology for
flat panel displays developed by a number of companies. SEDs use nanoscopic-scale
electron emitters to energize colored
phosphors and produce an image. In a general sense, an SED consists of a matrix of tiny
cathode ray tubes, each "tube" forming a single sub-pixel on the screen, grouped in threes to form red-green-blue (RGB)
pixels. SEDs combine the advantages of CRTs, namely their high
contrast ratios, wide
viewing angles and very fast
response times, with the packaging advantages of LCD and other flat panel displays. They also use much less power than an
LCD television of the same size.