For the resolution, brightness, and contrast these indicators in terms of LCD monitors and CRT monitors basically about the same. Technical indicators on the LCD display is perfectly acceptable, it only needs to consider is the price a year ago, the price of large screen LCD very difficult to accept, and the hundreds of million, and now, with the LCD volume production, cost reduction, LCD has come to a reasonable price, and Beijing 46-inch and 55-inch Samsung DID LCD screen splicing screen, factory sales, price, quality guarantee how much money in terms of the 40-inch LCD monitor, the price of about 5,500 yuan, we should not ignore a problem here, is that LCD monitors unlike CRT monitors, like an effective display area of ??effective display area of ??the 40-inch LCD display is 40 inches, with 42-inch CRT monitor effective display area is basically the same. The gap between 42-inch CRT market price of about 4,000 yuan, 1,500 yuan, 1,500 yuan in return zero radiation screen without blinking, glued to the screen for a long time is required in the graphics / video design, publishing and other professional field of the user in terms of how to enjoy it! LCD Video Wall in recent years gradually into people's lives and work of the new display vector. Because it is stylish, low radiation, energy-saving, space-saving, splicing gap is small, stable picture, clearly loved by the majority of users. With the start of the market, the decline in prices, so that more users have the opportunity to use this product. Therefore, the LCD display wall units to start all walks of life to the promotion and application. Has now become essential for large-scale exhibitions, public places, video conferencing, multi-purpose hall, television, entertainment, TV monitor and other places of the display device. LCD the tiled display unit because of its slim body of the screen become trendsetting new the tiled display technology, in recent years, liquid crystal display (LCD) the splicing unit's large-screen system, applications in the field of large-screen monitor gradually being concern aspects of climbing higher and higher, the LCD TV from the home appliance industry, this trend, LCD applications in other industries gradually trend. On the other hand, LCD parameters in raising, with low power consumption, light weight, long life (generally normal work for more than 50,000 hours) with no radiation, screen brightness uniformity, bright color, and splicing gap gradually narrow reach bilateral patchwork minimum 6.7mm, prices increasingly decline for industrial control, information dissemination, and a wide range of areas such as image monitoring slit LCD tiled display system is relatively low construction costs, which is slit LCD tiled display system to be shipped born inevitable reasons. How to choose the stitching program has also become users of concern following several ways to illustrate for you: show the scale of the Select DID Narrow LCD tiled display system with 40-inch and 46-inch two specifications. First, counting from the height and width of the room. For example, an indoor wall reserved area: 8.8 m wide, 3.2 m high. The first step splicing screen 46-inch and 55-inch Samsung DID LCD screen, factory sales, price concessions, quality assurance how much money to use height minus the the bottom support height in meters, 3.1 m -1 m = 2.2 m. Next, select the display size from the display height 16:9 display specifications for the 40-inch height general video surveillance screen the entire screen to display the way images or the command dispatch room high-resolution image display with, it is recommended to choose the right specifications generally, 2 × 2, 3 × 3, 4 × 4, because it is a display screen of 16:9, so the general principle of choice ≤ number of rows is the number of columns, or graphics prolate type display. The video interface generally provides analog input of a set: a set of RCA composite video and audio input, YCbCr Evangelical; the industrial interface using BNC chuck. Cable specifications 75-3,75-5,75-9 three kinds of commonly used general indoor use 75-3: The transmission distance control within 100 meters; 75-5: The transmission distance of 100 meters - 300 meters, professional cable :400-800 meters; 75-9: The transmission distance of 300 m - 300 m; professional digital computer interface generally within 800 meters: DVI digital video input or HDMI digital audio and video all the way; common specifications for 1.8 m - 15 m. Commonly used video equipment including several major video distributor, video signal extenders, video matrix switcher, video signal screen processor, video signal converter equipment. VGA matrix switcher or RGB matrix switcher select multiple computer signal input and output channels, into more or more of income on out, any exchange. VGA matrix switcher used computer VGA port, RGB matrix switcher is the computer signal into red, green, blue, line frequency, field frequency of five independent channels, the transmission signal stability, the distance than VGA far some common The 5BNC interface.