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Wednesday, June 13, 2007

An Introduction of LCD TV…

Previously I already explain a bit about PLASMA TV. So today I will talk about LCD TV. Well…almost similar to PLASMA TV, LCD TV is in the DIGITAL TV group. It’s very thin and light! Great to save space. It has a very good picture quality when in field of view. With latest LCD technology, LCD TV almost no static image burn-in problems. This is because the fluorescent backlight is filtered by the Liquid Crystal in solid state. About the life spend, LCD TV can perfectly work for 50,000 and 80,000 hours claimed by manufacturers. These last as long as the backlight can produce white light. The backlight can be changed out too! Beside be a TV for us to watch a movie, LCD TV is great for computer use too. Proven as most computers ship with LCD monitors. About the power consumption, LCD TV more economical and good for the environment. Why? Because LCD TVs use less power than Plasma TV's or CRT TV's, some cases more than half plasma TVs! So this is the good things about the LCD TV.
Now let’s take a look to the bad things of LCD TV. First, about the price. For 17” ~ 26” TV may be the price lower than PLASMA TV but when it available in larger sizes, they are more expensive than plasmas. Then about the picture quality, since LCD TV use of filters and a white backlight may reduce the quality of a true Red Green and Blue output. Blacks look more like dark grays because some of the white light always passes through. Beside that compare to PLASMA TV, LCD TV has a possibility for reduced angle of vision. As the white light passes directly through an LCD pixel (really through Red Green and Blue sub pixels) and the nature of polarizing filters, viewing angle is decreased. We will notice loss of quality for blacks and colors at angles greater 20 degrees off axis.
Next time I write more about the different between LCD TV & PLASMA TV….

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