Plasma TV Review
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.
Plasma televisions (and flat screen TVs in general) are extremely easy to handle. Due to their very nature, plasmas are flatter than traditional televisions (also called CRTs) and thus, are lighter as well. Currently averaging 5 inches in width and 100 pounds, their size will soon be reduced to an inch in width and 45 pounds. This lack of bulk has heralded in a new era of television placement; consumers can now mount their plasmas on the wall without worrying about ruining the wall.
Flat screen televisions cover a range of much higher resolutions than do traditional televisions. High definition plasmas and LCDs have resolutions from 1024×768 pixels per square inch to 1920×1080 pixels. The ceiling of resolution for CRTs stands at a mere 480 lines, providing a much more muddled picture than plasmas or LCDs do.
Plasma television manufacturers boast a lifetime of up to 60,000 hours for their televisions, compared to a CRT television’s life span of at least 5 years. Which is better? Depending on how much a plasma is turned on, its lifespan can range anywhere from 7 years (turned on for 24 hours a day, 7 days a week) to 55 years (turned on for 3 hours a day). The lifespan of a plasma TV is significantly greater than that of a CRT TV.
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.
Many worry about the possibility of burn-in images on plasmas. This occurs when a still shot is shown on the screen for too long. Afterwards, a faint outline or trace of the image may still be visible on the plasma’s screen. However, this should not be a serious problem with newer models, as manufacturers have worked to eliminate the burn-in effect.
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 40 inches diagonal.
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