| CD TV or "transmissive" display, a light source | | | | is especially critical for larger-screen LCD TVs, or |
| shines through a panel of liquid crystals in order to | | | | for LCD TVs on which much of the viewing will |
| display an image. A white diffusion panel behind | | | | be HDTV, or DVD movies. |
| the LCD redirects and scatters the light evenly to | | | | An important difference between LCD technology |
| provide a more uniform image than most | | | | and Plasma is that an LCD screen doesn't have a |
| competing technologies. | | | | coating of phosphor dots; LCD TVs color is |
| The LCD face consists of two transparent layers | | | | created through the use of filters. This keeps |
| which polarize a liquid crystal layer sandwiched in | | | | image burn-in from being a problem--- which is |
| between. The front layer of glass is etched with a | | | | good news in-particular for people who might use |
| grid pattern on the inside surface to form a | | | | a video gaming system or PC on their TV. |
| template for the liquid crystals. Liquid crystals are | | | | Another benefit of owning an LCD TV is the |
| rod shaped molecules that bend light in response | | | | energy efficiency of this technology. LCD TVs |
| to an electric current; the crystals align so that no | | | | typically consume 60% lees power than |
| light can pass through. Each crystal acts like a | | | | comparably sized tube-type, direct-view TVs. |
| camera's shutter, either blocking light or allowing it | | | | In most ways that really matter there isn't much |
| to pass through. A pattern of transparent or dark | | | | difference between LCD TVs and Plasma TVs. |
| crystals forms the image. This same technology | | | | Both of these highly popular types of flat panel |
| has been around for awhile, even in such | | | | TVs are thin enough to be placed virtually |
| unsophisticated items as digital watches. | | | | anywhere, and both produce images that are |
| LCD TVs use an "active matrix" LCD; the most | | | | startlingly clear, sharp, and bright. The most |
| advanced type of LCD. The active matrix design | | | | notable difference is screen size. The majority of |
| is based on TFT, or thin film transistors. These | | | | LCD TVs have a screen size measuring 30 inches |
| are tiny switching transistors and capacitors that | | | | and smaller. Plasma TVs are, for the most part, |
| are arranged in a matrix on a glass substrate, | | | | uninhibited by measurement restrictions. |
| they switch the LCD pixels on and off. In a color | | | | Basically, LCD and Plasma TVs are different |
| TV's LCD, each color pixel is created by three | | | | approaches to the same result because the both |
| sub-pixels with red, green, and blue color filters. | | | | create superior images using radically different |
| One of the biggest challenges for LCD TV | | | | technology. |
| manufacturers has been speeding up the pixel | | | | Find tips about male pedicure, neck cramp and |
| response time, (how fast an individual pixel's color | | | | other information at the Health And Nutrition Tips |
| can change without blurring) so that fast moving | | | | website. |
| images don't exhibit motion lag or "ghosting". This | | | | |