Cathode ray tube (CRT) is the conventional display system of electronic devices. But it is hazardous and consumes more space. So researchers preferred liquid crystal technology display systems. But this one is not economical and resolution was too minimal. So rigorous research started in this field. The common man requires a simple display system with of course advanced technology but that should be economical, risk free and should consume minimum space. Latest technology uses either plasma panel display devices or field emission display devices. Field emission display devices are preferred because of its high resolution and it is very economical. Nowadays display systems with field emission technology are available in the display devices market all over the world with an investor friendly price.
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