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Is bigger better for HDTV Why Projection TVs May not Offer the Best Venue
for HDTV
When you are looking for a new television, it is easy to gravitate to the new
bigger high definition projection televisions. At first glance, they offer huge
screens, perfect for home theaters. They also offer bright, clear picture
resolution. Before putting a lot of money down to purchase that big screen, it
is important to understand whether or not bigger really is better for HDTV and
why projections TVs may not offer the best venue for HDTV.
The advantages of projection high definition televisions are many. Because of
the technology it uses, it can offer the viewer a clear, true picture on a
larger screen size than a plasma or flat screen. The sets often are thinner,
weigh less and are easier to move. They also come in three different
varieties-the LCD, DLP and the LCoS to fit any home or taste. In addition, they
are generally less expensive.
LCD micro displays are probably the most popular of the HDTV sets. It is a rear
projector that used three small LCD panels. Each panel is less than one inch
diagonal and has the capability to produce high definition wide screen images up
to 70 inches. The LCD panels are made up of a grid of transistors that create a
pixel structure. When the transistors are charged, tiny rotating crystals
suspend n a liquid inside the panel. The crystals are like tiny shutters that
control the amount of light that passes through each panel. The light is
reflected on a mirror and through a projection screen, which creates the full
color high definition picture.
Despite the advantages of projection high definition televisions, there are some
drawbacks. The projection type might not be the right choice for everyone.
First, DLP projection sets come with maintenance. The bulb that the projector
used will burn out approximately every 2000 hours. The bulbs are not cheap
either. They can run anywhere from $300 up to $600. Also, before purchasing a
DLP projection system, you should do some research before buying. Not all DLP
systems are actually high definition. Some may be an older version of the front
projection system that uses an older chip. The resolutions of these are not
nearly of high definition quality. Another drawback to a DLP system is what is
called the "rainbow effect". The spinning color wheel in the projector causes
this. It can cause a small percentage of viewers to feel dizzy, get a headache
or even feel nauseated when watching DLP.
LCD screens are also popular choices when looking at projection systems. They
come in small sizes, making it a good option for smaller rooms. LCD screens do
not require aligning nor do the need regular bulb replacement as DLP often
needs. In addition, the LCD is thinner and closely resembles a flat screen.
There are also disadvantages of buying an LCD system.
One drawback of the LCD is what is known as "dead pixels". Some viewers notice
this while many others do not. The LCD used millions of pixels between the three
LCD's found in the projector. Sometimes, the pixels can malfunction or become
stuck in place. This results in visible dark or bright spots in the television
screen. Manufacturers usually will not fix or replace the pixels. Make sure you
have a good warranty and if the dead pixels are likely to bother you, read the
fine print. Another disadvantage to the LCD projection system is the screen
doors. The screens in an LCS have a large number of defined square-shaped pixels
that make up the image. When the screen is very large, the pixels are often
visible.
In general, most people enjoy their new high definition projection systems.
Before making a large purchase, make sure you research the product. Think about
what other options and features you will need when purchasing a new television.
Check the warranty. Most high definition sets come with a one-year warranty,
which is good. Also, take into consideration the cost of extended warranties
that most electronic stores offer. These sets can be a major purchase. A
standard plasma television should last around seven years. An extended warranty
is usually good between three and four years. An extended warranty may be a good
purchase. Something else to consider before spending a lot of money on a new
HDTV set is how long the technology will last. With the technology changing
quickly and offering better performance in TVs, spending thousands of dollars
for a TV that may last only seven years, might not be wise. As the popularity
rises, the prices will come down on HDTV sets making them more available to the
general population.
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