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Technology of LED wall and the course of best choice

Date Added: March 22, 2012 01:44:39 AM
Author: mequeen
Category: Business and Economy: Electronics and Electrical
More buyers are now choosing LED walls, particularly the very popular LED walls. Their picture quality rivals the best that plasma TVs can offer, at a more efficient level of energy consumption. A LED display wall is also superior to the standard LCD TV in terms of overall picture quality. What gives a LED TV an edge is, of course, the more sophisticated LED technology. “LED” refers to light emitting diodes, which provide illumination to the display and produce the picture. LEDs are better than the cold cathode fluorescent lights found in standard LCD TVs, in that they deliver better, more vivid images. In addition, some LEDs have a feature called “local dimming.” This means that when a picture in a scene requires it, some LEDs are turned off completely. As a result, some parts of the screen are in total darkness while others continue to be lit. This produces very dramatic, deep blacks. An LCD TV is simply incapable of this, because the fluorescent light tubes are always on, and so the blacks in a picture are never completely black. There are two ways that the LEDs may be laid out at the back of a 42″ LED. In “full-array” configuration, the LEDs are laid out behind the entire display. In the “edge-lit” configuration, the LEDs are placed only on the sides or edges of the panel. But still, even if only edge-lit, the lighting can reach all parts of the display including the middle, using what are called “light guides”. Thus, some 42″ TVs may be full-array with or without local dimming, while others may be edge-lit, again with or without local dimming. The most common in the market are those that are edge-lit without local dimming, which are also the thinnest models. The ones that perform best are the full-array with local dimming type, the original type of LED wall that came out. Buying a TV has become a lot more complicated than it was years ago. There are so many things to consider, starting with what kind of TV to get. Should one go for LCD or plasma? LED or OLED? And what size is best? Which brand stands out from the rest? The latest TV technology is the OLED, or Organic Light Emitting Diode. OLED TVs are the thinnest and offer the best picture quality, but they are the most expensive as well. Their life span is also not as long as that of other TVs, hence an OLED TV is not a very practical choice unless you don’t mind throwing away a hefty sum of money for something that’s excellent but won’t last very long. Next are the LED display, less pricey but a cut above standard LCD TVs. LED stands for Light Emitting Diode, referring to the light used to illuminate the screen and produce a picture. Standard LCD TVs use fluorescent tubes, which give limited color saturation with no deep blacks. With 42-inch LED display wall, you get very clear and crisp pictures, with wide color variety and superb contrast. Compared to their LCD and plasma counterparts, they are also more energy efficient. All things considered, 42-inch led walls are the best choice. They provide excellent picture quality at reasonable prices. True, they are usually more expensive than LCD TVs, but the enhanced picture quality is worth the extra dollars. Many brands offer their own models of 42-inch led display walls. SBC will be the best choice. SBC Company office website: Contract: Tel: 86-755-33819999 Fax: 86-755-33923886 E-mail: Pho: 15013411562 Skype: mequeen liu QQ: 1186497422