Posted by admin | Posted in LCD TV | Posted on 23-08-2009
Tags: 1080p, bargains, hdtv, shopping, television
Liquid Crystal Display, or more commonly LCD, televisions are one of the current hottest products in the consumer technology market. In 2007, LCD TVs finally surpassed CRT based technology in overall netted sales, and is steadily catching up to other high end products within the technology market, easily becoming the most widely sold television technology today.
When comparing LCD televisions to older CRT based technology, there is a huge skew in efficiency and performance between the two. LCD technology allows televisions to be made thinner and lighter, unlike CRT units of comparable screen-size, and can also come in larger sizes, making them more marketable to a wide variety of consumers. Manufacturing cost play a large role in the LCD domination of the market. Due to increases in manufacturing techniques and technology, producing these units are much cheaper compared to CRT televisions, which have considerably more parts and require more labor to be constructed.
The operation technology of LCD televisions floors the majority of competitors. Using cold cathode fluorescent lamps or LEDs at the back of the screen, LCD technology works by selectively filtering a white light to produce colored images. Liquid crystals align themselves in groves throughout the screen, producing a clearer, and better contrasted video image. Though multiple styles and variations of LCD technology exist, they all use the same basic ideology; the clear screen imaging is produced through controlling the polarization of the light source.
Operating technology for older CRT televisions is highly outdated, and provides little competition to LCD technology. The image on a CRT screen is created by heating a metal filament in the back of the unit, causing electrons to move in quicker and quicker cycles. With the help of an electron magnetic, these electrons are directed to the television screen, essentially producing an image. The negative aspects of these televisions are the intense amounts of energy they exert through filament heating, and the heavy and bulky casing and sizes, due to the extensive amounts of parts and thicker glass screens. Because the glass must be cut thicker for larger screens, CRT televisions have limited screen sizes. Add that to the fact they are electronically inefficient, produce poor quality images, and are extremely heavy, it is no wonder why the CRT television is becoming an extinct model.
Every new form of technology has some deficiencies, and the LCD television is no different. Though they are more energy efficient than CRT units, LCD technology is wasteful as well, blocking a majority of the light before it ever reaches the viewer. In addition, due to mild leaking by the liquid crystals, the best image contrast ratio capable for these units are 1600:1, which is slightly lower than most plasma screen televisions.
Despite the few mild drawbacks, LCD televisions are by far the best on the market for the average consumer. Because they are cost efficient for manufacturers to produce, the savings carries over to the customer, making LCDs affordable options for any home, office, or other space in need of a television.
About the Author:
Matthew Kerridge is an expert in the latest television technology. If you would like more information about lcd televisions” please visit http://www.ebuyer.com
Article Source: ArticlesBase.com – LCD Televisions
