What difference is between flat screen tv, plasma, hdtv, projection lcd?

Try to buy a 40″+ flat panel TV, but see so many different terminology I am not familiar with, can someone explain to me? what is difference? what should I look for?
Thanks.

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3 Responses to “What difference is between flat screen tv, plasma, hdtv, projection lcd?”

  1. Mr Dont know It All says:

    slaps forehead on desk, repetitively…

  2. RaBert says:

    A flat screen TV is any TV with a flat screen! Dont bother getting a plasma TV. HDTV means High Definition Television, any TV with the HDTV means it is capable of displaying Hi def so everything will look sharp and crisp, Hi Def is also good if your playing video games. A Projection LCD is a projection TV that uses LiquidCrystalDisplay technology. If you wanna buy a new tv go with a LCD, that has HDTV.

  3. gp4rts says:

    There are two basic types of flat-panel TV: LCD and Plasma. Each has its advantages and disadvantages, and you must consider what is most important to you. 40″ is big for LCD, but is readily available in plasma. Here is a list of items for you to consider, but you really should look at both kinds of sets to see what you like better. If you go for plasma, Panasonic has the best reputation for quality.

    Picture quality of plasma is brighter, better color, better blacks than LCD. (There is something about looking directly at glowing phosphors!)

    Sharpness is the same for equivalent pixel counts. Some newer LCDs have 1080 x 1920 resolution, most plasmas still in the 720 x 1280 range.

    Plasma is heavier and uses more power than flat panel LCD.

    There are reports that plasmas are not as reliable or they don’t last as long, but that is no longer true with the latest models. Plasma phosphors dim slowly over time (but not as fast as CRT phosphors); but direct view LCDs use flourescent lamps which also dim and eventually burn out (some are replaceable). Projection LCD sets have bulbs of limited life, but are replaceable and the lifetime is a few thousand hours of viewing.

    Plasmas are subject to burn-in. A stationary image left on the screen for a long time could produce a permanent ghost image. The most risk is when viewing a lot of 4:3 ratio pictures (non-HD), which are displayed with vertical dark areas on the left and right to fill in the wide screen. There are ways to minimize this, however. many sets have a “stretch” mode which widens the picture to fill the whole screen. This could also be a problem with extended playing of video games if there is a background image that remains stationary.

    Plasmas come in largers sizes, although large flat panel LCDs are coming out, but they are expensive. LCD projectors can be 70″.

    LCD contrast and brightness can be reduced when viewing from off-center (both flat and projector, but sets will vary).

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