Plasma, TV has vivid colors, fast refresh & great contrast? Plasma TVs are the TVs that mostly likely catch your eye as you stroll down the aisle in your local best buy. Plasma TVs have exceptionally bright, distinct & vibrant colors.
But as with most lovely things in life there is a downside to consider. Plasma TVs have high power consumption & a relatively short lifespan. But then again you may well be buying a newer type of higher technology TV yet again in the future. After all having the latest TV technology has become an essential status symbol in plenty of if not most middle class American homes. If you only wanted a TV you could of well gone to Wal-Mart or Costco & purchased a acceptable image older CRT TV inexpensively.
The high power consumption may not bother you if you don't mind paying a bit more for your electric bill, but the real issue as in laptop computers is the amount heat generated & the damage done to these electronic devices & the screen of your new & costly plasma TV by that heat.
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The heat comes from the million tiny fluorescent tubes on a heavy glass substrate that produces the image. This design is also part of the longevity issue. The high heat produced in a small area burns out the phosphors sooner than the phosphor on a traditional CRT. &, in tying everything together, this can also result in image burn-in on channels that display their logo continuously in the lower right corner.
Some tests have shown that the ability for a plasma display to show true black decreases by 13% over the first four weeks. Over a period of a few years this could show blacks as light grays in your image.
LCD TVs are much less costly than plasma, but also tend not to have pictures that are as sharp or bright. The other downside to LCD displays is that the pixels are relatively slow to alter state. fast moving objects such as a hockey puck or baseball bat get blurred where they might show more crisply on a plasma or lovely quality CRT.
Projection TVs are yet another option. Projection TV technology now produces much sharper, more vivid images that in previous years with deeper blacks that rival the CRT, & beat most of the plasma & LCD displays. This is the way to go for display sizes of 50 inches or greater.
Most consumers use their TVs on an average basis of 1,000 hours a year. That means that if the bulb is in the range of $ 300 - $ 500 dollars the cost of "running the projection TV" at a rough guide of 1,000 hours of use per bulb is several hundred dollars a year. The projections of bulb longevity are often done in best case not scenarios not the ordinary setup where the homeowner may even impair the ventilation of heat accidentally by TV & furniture placement chosen by the wife for appearance than electronic longevity.
The main drawback for any of the projection technologies is the lamp used as the light source. The typical metal halide projector lamp only lasts 1000 to 2000 hours & can cost several hundred dollars to replace. Longer life span lamps called ultra high performance (UHP) have recently come on the market that use mercury vapor instead of argon & have lifespan ranging from 3,000 to 10,000 hours.
As with LCD display, manufacturers are moving towards high intensity LED technology to replace lamps & get lifespan measured in years. Of course, that technology isn't cheap, but prices should come down as they become more obtainable in the next several years.
Not so conceptually the projection TV bulbs seem to be proprietary bulbs sold by the projection TV manufacturer. Bulbs for Sony projection TVs are made & distributed only by Sony. You may find a less costly bulb say a Hitachi. However it is a judgment call. The Sony bulbs although more costly are much more popular & easy to find on eBay - even used bulbs. But projection TV bulbs are fragile & may not survive shipment by mail.
SED is Surface-conduction Electron-emitter Display. These should be coming on the market in about 2008/2009. Japan will probably start seeing them by the end of 2007. they are a flat panel display, much like the LCD displays now, but have characteristics resembling that of the CRT for contrast & image quality. This comes from basis of the design: each pixel is basically a tiny CRT. It uses less energy than plasma since it's not as hard to generate an electron beam (as a CRT does) than it is to excite photons in a gas (as the plasma display does).
On the horizon they can look forward tothe next tound on new high tech type of TVs- SEDs. what is SED?
In the end enjoy your purchase. You may well purchase a plasma TV now, pay it off, confess you really enjoyed the plasma TV & yet purchase yet again the newer SED TV for your home for its better, more advanced image & as a status symbol for your home. It never ends.
There is no production display of SED TVs yet available. As well there is no data yet for other performance or reliability factors.
