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| 1.How LCD TVs work? |
| LCD is an abbreviation for Liquid Crystal Display. A LCD tv screen is made up of two clear panels between which is a matrix of colour liquid filled pixels. These pixels respond to a small voltage which makes them change state by twisting or untwisting which allows light to pass through them or to be blocked depending on the state of the pixel. This process of twisting takes very little power. The pixels are either red, green or blue and they are structured in a matrix of millions of pixels to make a picture. The coloured pixels of the panel are illuminated from Behind with a back light to show their colour, and areas of light and dark, depending on how the pixels are twisted. Lcd screens are available in small sizes for watches up to 108 inches for large televisions. |
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| 2.Why Upgrade Your Current TV to an LED TV? |
LCD TV uses Cold cathode fluorescent lamps (CCFLs) backlighting which LED TV uses LED backlighting technology which costs less power and has longer lifetime.
Anything slimmer than a standard Cathode ray tube (CRTs) television used to be considered a slim TV. Today it seems anything over 4 inches thick is unacceptable. LED backlit TVs allow the manufacturers to produce TVs that are slimmer than ever before. With an LED TV, it is finally possible to hang your TV on the wall and actually have it look like a picture.
LED TVs offer a brighter picture while at the same time being able to produce a better contrast ratio. The result is a TV that is slimmer, brighter, and darker at the same time. Everything that you watch on an LED TV will look better than your old TV. From video games to chick flicks, you will see detail that you have been missing before you got your LED TV.
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| 3.What to look for in an LED TV? |
Buying an LED is no small purchase. It is important to know what to look for when shopping for a new TV. Your TV says a lot about who you are. It is the most visible piece of your home theater system, and the only part that you actually see during your movie. While it is turned off it is very much a piece of your roomĄ¯s decoration. It is wise to consider these and other factors when selecting a new LED TV.
Look for an LED TV with local dimming. Not all LED TVs are created equal. The best LED TVs will actually be able to dim the backlight only in dark portions of a movie, resulting in greater detail and contrast.
Thin is in. LED backlights allow the TV to be built to a slimmer standard. This is especially important when mounting the TV to a wall. Consider how much the TV with the mount will protrude from the wall.
Refresh rate. Look for a TV with a fast refresh rate. Standard TVs refresh at 60 Hz, the best TVs refresh at 240 Hz or even faster.
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