plasma TVPlasma TV is a television display technology in which each pixel on the screen is illuminated by a tiny bit of plasma (charged gas). The plasma is encased between two thin sheets of glass. Plasma displays are generally considered to offer better dark-room viewing and wider viewing angles than LCD. Plasma TVs are available in sizes from 37 inches to over 100 inches, measured diagonally. Plasma can be vulnerable to burn-in, a phenomenon in which faint, permanent "ghosts" appear on displays that have maintained a fixed image for long periods of time. Examples of such images include the bars seen when watching 4:3 video on a widescreen display or the constantly running ticker seen on some shows or channels. Most newer models have burn-in prevention features, but these may not always be 100% effective. However, some plasma TVs also have the ability to remove burn-in should it occur. Vendors of plasma TVs include Fujitsu, Funai, Gradiente, Lanix, LG, Panasonic, Proscan, Samsung and Sanyo. Pros: Wide viewing angles. The black-level performance (the intensity of black in the display) compensates for ambient light and sharpens the picture. Excellent picture quality in higher-end models. Not as bulky as rear projection TVs. Wall-mountable. High refresh rate means that the picture is smoother and there is no motion blur. Burn-in is possible but not usually a problem with newer models. Cons: Consume significantly more power than LCD TV of similar size. Slightly heavier than LCD. Glass screen can reflect light unless treated to be less reflective.
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