Since the display methods of CRTs, PDPs and LCDs significantly differ, these
systems have specific advantages and disadvantages. For example, CRT technology,
since being developed at the end of the 19th century, has been greatly improved
over the years. Today's CRTs offer high-quality images, including accurate color
reproduction, excellent color gradations, and a wide viewing angle, all at a reasonable
price. However, due to their structure, it is not easy to reduce the depth or
weight of CRTs. There are also some technical limitations that make it difficult
to increase the screen size.
With PDPs, on the other hand, it is not difficult to reduce the unit depth and
increase the screen size. PDPs offer a wide viewing angle, and residual images
are minimal. The image quality rivals that of CRTs. However, since it is difficult
at present to reduce the size of the imaging pixels, sufficient resolutions cannot
be established for small screen sizes.
Advantages of LCDs are their slimness, and long life expectancy. Screen images
are also easy to view even in a bright room. High-precision processing technology
for imaging pixels has advanced to the point where both compact and high-resolution
panels can be manufactured. Compared with CRTs and PDPs, on the other hand, LCDs
have a narrower viewing angle. LCDs with very large screens are expensive due
to the low production yield rates involved with large panels, which is related
to the structure of LCDs.
Due to these characteristics, currently, flat panel TVs with large screens are
generally PDPs, and those with small to medium screens are generally LCDs, with
32V as the borderline size. Although demand for inexpensive CRTs remains strong,
user needs are naturally shifting toward high quality images on large screens
and the effective use of limited space in homes. As the prices of PDPs and LCDs
continue to drop, the shift from CRTs to FPDs will undoubtedly accelerate in the
coming years. |
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