Question about Projection Televisions
TFTs can produce a wide array of colors, but it takes an enormous
number of transistors to make up a display, and a problem with any one
of them creates a defective pixel on the screen. Typically this shows
up as a bright spot on a dark background, caused by a damaged TFT
failing to turn off a pixel. Most active matrix displays contain a few
bad pixels, but a few bad pixels are not going to have much of an
impact on the overall picture.
The properties of liquid crystal material can create problems with viewing angle effects, causing the image to darken, disappear, or reverse the dark and light tones when the viewer is not directly in front of the display (kind of like looking at the negative of a photo). The light bulbs make LCDs heavier than the plasma TVs (though they are still lightweights compared to CRT televisions.
Benefits of LCD TVs include a picture that can't burn in and doesn't deteriorate over time. Because of their flat-panel nature, placement options are plentiful, optimizing the cool factor over standard TVs
Posted on Apr 30, 2008
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