LED is one kind can transform the electrical energy as the visible light semiconductor, because after having easy to control, the low pressure cocurrent actuation, the combination, the color performance to be rich, service life long and so on merits, widely applies in the urban bright project, the large screen display system. The LED color wall screen is the LED technology applies the exterior decoration illumination domain the new product, its principle of work is through actuates and controls two parts of compositions, takes the illumination display unit by the small LED square shape lamp, forms the LED screen or the LED advertisement electronic monitoring system through many square shape's LED lamp picture element units according to certain matrix arrangement, in addition connects the video frequency controller and the computer constitutes. As a result of its can according to the melody, the rhythm have the light and shade and the color change and can form each kind of dynamic picture effect, may contrast one kind of illusion to be blurred, dazzling mystical, magnificent variegated background light, should with upscale recreation areas and so on DISCO bar, song ballroom to the light background special request, cause the indoor light the performance way to be richer and the optimization. Controls, the cascade material transmission, the system immediate response point by point through the whole, achieves to recreation area interior LED light whole common controls and so on KTV, dining room, ballroom, singsong house, forms a more harmonious whole effect. 1st, uses LED the advantage LED is one kind can transform the electrical energy as the visible light semiconductor. Its characteristic is: a. efficiency is high, the energy consumption is small. the b. optical fiber quality is good, because in the spectrum does not have the ultraviolet ray and infrared, therefore does not have the quantity of heat, does not have the radiation, LED to belong to the model green lighting source. the c. life is long, the luminous flux weakens to 50% nominal life 100,000 hours. d. use security. Monomer working voltage approximately between 1.5V~5V, operating current about 20mA. e. green environmental protection. The reject may recycle, has not polluted; Does not look like the fluorescent lamp to include the mercury ingredient. f. controls nimbly, may adjust the light through the adjustment electric current, the different light color's combination may mix colors, in addition the sequential control electric circuit may achieve the diverse dynamic change effect. Above these merits cause LED to consider that is one kind of ideal green photo source, already more and more successfully applied in the project illumination and the demonstration domain. LED in color performance links and so in ability, light control, environmental protection energy conservation, must compared to the traditional neon light, the incandescent lamp, the halogen tungsten lamp and so on have the obvious superiority. The LED picture element combination may constitute dynamic may the ever changing visual effect. 2nd, remains unresolved question At present, in the DISCO bar's light and the control system varied assortment, like must construct the entire color which one kind shocks to demonstrate that the wall surface takes the environment background, the photo source should priority selection LED, but is not the traditional power consumption is big, the control difficulty is high, service life not long, system safety coefficient slightly bad heat radiation photo source and gaseous discharge photo source. Design idea: The environment background modern design, the environmental protection, the color are eternally changing under the computer control, manifest the high grade DISCO bar the characteristic. Controls, the cascade material transmission, the system immediate response point by point through the whole, achieves to the bar interior LED light whole common control, adjusts the corresponding tone (for example demonstration simple change picture) and the atmosphere effect. 3rd, design thought The LED screen demonstrated that involves to optics, the electricity, the control, the machinery, the material, art and so on multi-disciplinary technologies. Designs under the guarantee illumination function's premise achieves with the environment match case visual effect. The concrete design may use the square shape the illumination (demonstration) the unit, the illumination (demonstration) the unit is composed of certain LED, namely in the square shape cream color PC shroud, is loaded with welds certain LED the circuit wafer. This one by one square shape “light bulb” picture element unit according to certain matrix arrangement, but through locates the clamp, the bolt and so on to fix on the fire protection plank, this fire protection plank installed on the wall surface constituted one kind of square shape light bulb LED screen curtain wall, in addition connected the video frequency controller or the computer constituted a structure simple color wall screen screen display system. The entire color wall screen display system may control, the cascade material transmission, the system immediate response point by point through the whole, achieves to the bar interior LED light whole common control, but adjusts the corresponding tone (for example demonstration simple change picture) and the atmosphere effect. Reference: LED illumination color parameter 1 red (R) LED high luminance photo tube wave length 625nm 2 green (G) LED high luminance photo tube wave length 525nm 3 blue (B) LED high luminance photo tube wave length 470nm