The rise of the liquid crystal mosaic wall thanks to the rapid decrease of the flat-panel display technology matures and costs. LCD panel prices in 2008 is less than one-third of the same size product in 2005, the largest decline of their end product prices reached more than 80%. The rapid decline in prices of LCD TVs, LCD monitors and laptops, three large-size LCD applications, forcing the liquid crystal panel companies want more new applications looking for profit growth. Business display and stitching works became the focus of attention of many LCD panel enterprises. However, subject to the stitching works stringent product quality requirements core technology-intensive nature of the problem, only Samsung, Simmel minority panel enterprises accomplish something in this area. As with the upstream firm bottlenecks encountered in the core technology of soil breakthroughs different downstream display manufacturers and suppliers enthusiasm. Within two years, the domestic launch the stitching concept LCD unit number of firms had more than a dozen. The LCD splicing able to undertake engineering integrators is a dime a dozen. LCD splicing unit, although the higher technical requirements, but if the manufacturers quality control slightly "more lenient" fact, very low barriers to entry. LCD Video Wall control technology, various software in original DLP mosaic wall products based on improvement or public. Lower the threshold of such a system, LCD Video Wall quickly became popular in the short term to an important reason. User perspective, the LCD technology is already widely known. The widespread awareness of this unique promotion for manufacturers LCD Video Wall laid the foundation. It is understood that, in the normal tendering process, if using of MPDP, and DLP technology products, and ultimately, to explain to users the advantages of the technology. But if it is a mosaic wall of LCD technology, this part of the work often save more. Large-size LED backlight product development and design, to face an important problem is the heat. Direct type LED large-size backlight, there is a certain amount of light mixing height, have some help on the heat, and in the entire LED board will do the appropriate heat sink, to achieve the cooling effect. Because of the LED light power is relatively high, and has a certain amount of energy is released in the form of heat, and the backlight on the thermal reliability requirements more stringent, overheating, affect the performance of the circuit components, reducing the light emitting efficiency of the LED lamp, the membrane wrinkles The phenomenon causes backlight mura (uneven spots) bad, the local temperature of the backlight overheating, aging test is done in the module generates the LCD work instability. The development of mass production of large-size LED side-luminescent backlight, requiring light bar to reduce the number of increasing the power of the lamp, the cooling requirements of the LED light bar higher. Require low cost, relative to the input of large enterprises and government projects, the bar is more sensitive to the overall price of the mosaic wall; signal requiring a simple, often only need a live video signal, or a dynamic picture playback from the computer, without complex multi-signal input; simple manipulation of splicing processors often do not need to do the practical application of manipulation, or mode conversion, only need a power-up can be; signal output requiring a simple, generally only need to be spliced ??into a large screen, or requirements different splicing combinations of the same content, does not require a variety of different signals at the same time display, as well as the window control complex fancy not practical function; splicing unit (general LCD / PDP flat-panel TVs) placed require a splicing The processor can support the different placement of the splicing unit, and requires stitching processor can support the horizontal and vertical display unit, such as different display angle, and require a screen displayed complete splicing; less demanding on the edge of the processing for the display unit, not require complex and expensive edge blending function, but on the edge of the display unit for the pressure side, do the edge of the shield processing, in order to avoid deformation of the image does not show the black side of the LCD / PDP devices, screen uncoordinated situation;