Large-screen LCD screen extremely broad applications, from video surveillance to show advertising billboard screen to the subway station, the splicing screen applications everywhere. Current common mosaic screen types are divided into DLP rear projection, plasma screens, LED screen and LCD screens. Advantages and disadvantages between the different products, prices and costs aside aside, from a technical point of view, LED screen by numerous independent LED lamp structure, generally coarse particles, suitable for long distance and screen rendering, it's very bright colors, high brightness can be done, but we are often on the LED advertising screen subway found on the screen seems very prone to dead pixels. Besides DLP rear projection, which can also be regarded as a mature technology, now more rear-projection mosaic screen has been upgraded to high-power LED light source, have more energy and life support, but the projection equipment in every After the second movement of transport are likely to cause displacement deviation of the projected image, the installation process is more complex, their volume is too large, large transport difficult. Plasma itself unable to adapt to the times there are many shortcomings, such as high power consumption, greater weight if a long stay in the same picture may also leave a deep screen printing. In contrast, the LCD panel technology after years of honing and improvement, and now the application has also been very mature and become a mainstream application. In the field of video surveillance, LCD splicing screen appear to solve the various shortcomings of traditional video wall, in order to facilitate a comprehensive, real-time video display various system information, especially remote real-time command, scheduling and other engineering applications to provide the best big screen display system. Features mosaic screen: 1, long life, low maintenance costs. The liquid crystal display device is the longest service life of its own very long life, even the shortest life backlight part, up to 50,000 hours, but even with over such a long period of time, it will only affect its brightness , simply replace the backlight lamp, you can restore the original bright colors. This projection is a difference between the nature of the LCD backlight life is ten times the projection bulb, and their advantages and disadvantages without saying. 2, viewing angle. For early LCD products, LCD viewing angle constraint once a big problem, but with the advances in LCD technology, has completely solved the problem. LCD mosaic wall using DID LCD screen, which can reach more than double 178 degree viewing angle, has reached an absolute perspective effect. 3, high resolution, bright screen. LCD dot pitch is much smaller than the plasma, the physical resolution can be easily reached and exceeded the high-definition standard, LCD brightness and contrast are high, colorful and bright, BSV LCD splicing technology to achieve pure flat panel display completely without curvature, image stabilization is not flashes. 4, ultra-thin and lightweight. LCD has a thin, light weight, can be easily spliced ??and installed. Special 40-inch LCD screen, weighs only 12.5KG, the thickness of less than 10 cm, which is the other display devices can not match. 5, low power consumption, low heat. LCD equipment, low-power, low heat for people always praiseworthy. Small-size LCD screen power less than 35W, 40-inch LCD screen, its power is only 150W or so, only about one-third to one-quarter of the plasma. 6, trouble-free for a long time, and low maintenance costs. LCD is the most stable and reliable display device, due to heat is very small, the device is very stable, not because of damage caused by the high temperature component failure.