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CRT stands for cathode
ray tube, the common picture tube used in TV sets for decades and still the most
common display type today. Newer display types like Plasma and LCD work differently
and aren't as large or heavy as the CRT, but the picture isn't necessarily any
better. CRT produces its pictures from a ray
of electrons emanating from a cathode in the neck of a picture tube. The ray strikes
the inner face of the picture tube, which is coated with lines of phosphor that
light up when struck by the electron beam. The scan line offers resolution greater
than most LCD, plasma or DLP displays. For a fixed pixel display to equal a CRT
running 1080i, a resolution of 1920x1080 would be required. Only the most expensive
LCD or plasma displays can reach this resolution. Advantages
of CRT
1.Over 50 years of engineering experience in CRT.
2.CRT TV sets
are reliable and have a long life.
3.CRT rear-projection HDTVs are the least
expensive large-screen TV.
4.1080i is equal to a fixed pixel resolution of
1920x1080.
5.Direct-view CRT is still the all-around best picture of all display
types.
6.CRT TV is inexpensive and better than ever before.
Disadvantages
of CRT
1.CRT's are the biggest and heaviest of all TV types.
2.Direct-view
picture tubes have a size limitation about 36".
3.CRTs use more energy
and generate more heat than DLP or LCD.
4.Rear-projection TVs have limited
brightness when viewing at an angle.
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