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.
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.
Plasmas also have a wider viewing angle than LCDs. When viewing the television from the side, higher above, or lying on the floor, plasmas retain their crystal clear picture much better than LCDs do. Due to the shutter effect caused by the backlighting on LCDs, the larger the viewing angle is, the more brightness variation an LCD television viewer will experience.
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.
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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