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In an LCD TV or "transmitter" screen, a light source shines through a liquid crystal panel to display an image. A diffusion panel white behind the LCD redirects and scatters the light evenly to provide a more uniform image than most competing technologies.
The LCD face consists of two transparent layers which polarize liquid crystal layer sandwiched between the two. The front glass layer is etched with a grid on the surface interior to form a liquid crystal model. Liquid crystals are rod-shaped molecules that bend light in response to an electric current, the crystals are aligned so that light can not pass. Each crystal acts like a camera shutter, either blocking light or allowing it to pass. A pattern of crystals transparent or dark shapes of the image. This same technology has existed for some time, even on items like digital watches guard.
Televisions Matrix LCD using "active" LCD, the most advanced LCD. The active matrix design is based on the TFT, or thin-film transistors. These are small change of the transistors and capacitors are arranged in a matrix on a glass substrate, which illuminate the LCD pixel on or off. In a color television LCD color of each pixel is created by three sub-pixels of red, green and blue.
One of the biggest challenges for LCD TV manufacturers has been to accelerate the pixel response time (how fast the color of an individual pixel can change without blurring), so that fast-moving images are not kept in motion or "ghost". This is particularly critical for large-screen LCD TVs or LCD, where much of the screen is HDTV, or DVD movies.
An important difference between LCD technology with plasma and LCD screen that has a layer of phosphor dots, LCD color TVs is created by using filters. This prevents image burn-in to be a problem — which is good news especially for people that could use a video game system or PC on your TV. Another of the advantages of owning an LCD TV is the efficiency of this technology. LCD TVs typically consume 60% more energy comparable size is the pipe, the Direct view TVs.
In most ways that matter there is little difference between LCD and plasma. These two popular types of flat screen televisions are thin enough to place virtually anywhere, and both produce images that are incredibly clear, sharp and bright. The main difference notable is the screen size. Most LCD TVs have a screen size measuring 30 inches and smaller. Plasma TVs are mostly not constrained by the limitations of the measurement.
Basically, approaches, LCD and plasma are different for the same result, because both produce higher quality images using radically different technology.
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Article Source: ArticlesBase.com – Inside Your LCD TV
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