Plasma Tvs For Cheap – What You Should Know Before You Buy One…
Wednesday, August 4th, 2010Plasma TV’s and LCDs (liquid crystal displays) are both kinds of flat screened televisions. Plasmas work by transforming noble gases into plasma, which then discharges light to shape the display on the screen. Each small compartment of gases constitutes one pixel. LCDs, on the other hand, form their displays by placing liquid crystals in front of fluorescent or another type of backlighting.The plasma television is a relatively new type of television, with a flat screen display. It works by having a mixture of different noble gases in small compartments behind a panel of glass. The plasma TV derives its name from the reaction in which these noble gases are turned into plasma, which emits light and forms the display you see. Plasma TV’s are often compared to LCD’s (liquid crystal displays), another type of flat screen television that uses liquid crystals in front of backlighting or fluorescent tubes to produce images.
Plasmas and LCDs, flatter and lighter than tube televisions, are also less difficult to manage than traditional CRT (or tube) televisions. Though, on average, they are a hefty 5 inches thick and 100 pounds, recent advances in plasma technology will soon cut their thickness down to an inch and their weight down to 45 pounds. Consumers can now take some liberties in the placement of their plasma TV’s. Plasmas can easily be mounted on walls or placed on smaller stands.
Resolution, the quantity of pixels on the television screen per square inch, is also a key component of televisions. Flat screened televisions boast a much higher resolution than CRT televisions, which yields clearer images on the screen. High definition plasmas have resolutions that range from 1024×768 to 1920×1080. This is much better than even the maximum resolution for tube televisions, a mere 480 lines.
Plasmas even last longer than other types of televisions. Manufacturers and companies stress that an average plasma television has a life span of 60,000 hours. That is equivalent to a life span of almost 7 years, if the plasma is left on 24/7. Compared to a tube television’s estimated lifetime of much less than 5 years if left on 24/7, the plasma television is the best choice.
Plasmas surpass LCDs in both colour quality and contrast and conventional televisions in colour quality. Plasma TVs generate more vivid colours and blacker blacks than LCD TVs do, allowing for a clearer, more intense image. LCDs are limited by their backlighting, which escapes out through pixels that should be black. However, conventional TVs are the only ones capable of producing true black.Plasma televisions have both a better color ratio and more contrast than LCDs. For plasma TVs, each pixel can virtually be turned off to produce truer blacks. However, LCDs use a backlight, which will shine through the “black” pixel and damage the contrast quality. CRT televisions have the best contrast, but both plasmas and LCDs surpass them when it comes to color reproduction.
The image of both LCDs and plasmas is comparable when viewed directly in front of the screen. However, plasma televisions have a wider viewing angle than their counterparts. Backlighting causes this problem in LCDs; the image on the screen degrades as the viewing angle increases. Plasmas can be viewed from the sides or top and bottom.
In older models of plasma TVs, the burn-in effect posed a significant problem. When an image (for example, a paused movie) is kept on the screen for too long, the image could be burned into the screen and still faintly visible afterwards. Plasma TV companies have worked to eradicate this problem with much success; while it is still possible for images to burn in, on newer plasmas the possibility is almost negligible.Plasma TVs have been criticized because of the possibility of burn-in images. The burn-in effect happens when a still image is shown on the plasma’s screen for long periods of time (for example, when a DVD is paused and the plasma is left on, burn-in might occur). A ghost of the image may remain on the screen after the image has been changed. However, this effect has almost been negated in the newer models of plasma televisions.
Plasma televisions have almost no size limitations, as long as the consumer’s budget can cover a gigantic screen. LCD and CRT televisions, on the other hand, are constrained to a diagonal measure of about 52 inches.Plasmas also have virtually no size limitations; depending on a consumer’s budget, plasma screens can go up to any size. LCD and CRT televisions, on the other hand, are confined to approximately 52 inches diagonal.
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