The difference between LCD splicing screen and ordinary LCD screen

Many customers use LCD splicing screens to have such confusion: The same is the case of LCD panels. The price of splicing screen panels is so different from the price of LCD TV screens. In fact, customers who come into contact with commercial products should understand it. Most industrial products can be classified into military, industrial, and commercial grades. Commercial grades refer to common mass consumer products, while military grades are generally used by military and aviation, while industrial grades are Between the two, we call it a commercial product, which is generally used by companies, enterprises, and industry users. From the aspect of product quality, the three are decreasing.

The LCD panel industry is a high-tech, high-capital, high-risk industry and a technology-intensive industry with a significant scale economy. “Because of various factors such as production quantity and process complexity, there is a big difference in the price of the final product.” Military, commercial, and civilian products have large differences in production standards, processing standards, and testing standards. Take the LCD screen, military product testing is based on 100% spot checks, commercial product testing is about 50%, while civilian products may only detect 10% of the samples, and the three standards are still very different, and spot checks are also cost-intensive. , And so on, this is just a manifestation of the complexity of the process. The production quantity, yield, etc., are all linked to the efficiency of the LCD production line. The construction of a production line requires cost. Although the LCD panel and TV panel are on the same production line (should, no need Open up a new production line, but there are certainly many areas that need improvement and adjustment. This will certainly take a lot of time, as well as a certain amount of manpower and material costs, and for a well-established production line, stoppages mean losses.

The difference between industrial LCD splicing screens and ordinary TVs is mainly reflected in the following six points:

First, overall stability (including use time, anti-interference, etc.)

LCD splicing large screens often require 24 hours a day, 365 days a year without interrupting the use of electricity when the large screen constitutes a digital signage system (and televisions usually only work a few hours every day), and the application environment of some splicing screens may be relatively poor. This requires a higher reliability and stability of the LCD splicing screen. Compared with televisions, in terms of design, the current, power consumption, temperature and resistance to electrical interference, the ability and margin of electrical shock, and the time for uniform and trouble-free use of the LCD splicing are far greater than those of TV sets. Must use a fully shielded metal shell to ensure electromagnetic compatibility and interference performance; in the selection of components, the features of the components used in the LCD splicing screen are higher than the characteristics of the use of the TV, voltage, current, temperature, humidity and other aspects Device; and in the installation, debugging, especially components and machine aging process requirements, the requirements of LCD splicing screen is also higher, TV aging machine is usually in the pipeline at room temperature power for about 8 hours, and LCD splicing The aging of the whole screen of the screen needs to be electrified and aged for more than 24 hours in the aging line of the high-temperature and high-humidity sealed environment to ensure the stability of the whole machine.

Second, the degree of image clarity

The LCD splicing display has the function of visually reflecting the image quality, and the full 1920*1080 resolution for the selection of display devices in the field of digital signage. The LCD splicing screen is the preferred splicing screen, and the professional splicing screen resolution is automatically adjusted according to the display output. The resolution (can be supported regardless of horizontal and vertical); its high reliability and high clear display capability will ensure that you can record the edited high-definition video and video signals intact in front of the viewer. On the other hand, LCD TVs only support the common resolutions of several TVs specified in the description. Since there are only a few resolutions of the civilian TV signal, the TV LCD will only take effect according to several common resolutions used by civil users, and special resolutions will cause Huaping.

Third, color reproduction

If the clarity is mainly determined by the amplitude and frequency characteristics of the video channel, the reduction degree is mainly determined by the chroma signals and luminance signals of the three primary colors red (R), green (G), and blue (B) in the liquid crystal splicing screen. Determined by phase. Since the liquid crystal splicing screen is usually viewed as a static image, the color reproduction degree of the splicing screen is higher than that of the television. Therefore, the visual attenuating channel of the professional splicing screen should be used in the luminance and chromaticity processing and R, G, and B processing. Accurate compensation circuit and delay circuit are provided to ensure phase synchronization of light/color signals and R, G and B signals. On the other hand, LCD TVs are required to use the environment, and the images are displayed after the touch-up processing. Can not truly reflect the actual effect.

Fourth, the use of machine materials

Due to the requirements of the use environment, the material of the casing of the LCD TV is made of metal. And the internal board line is industrial design, not easy to aging; energy saving and environmental protection concept: Samsung seamless LCD video wall UD55A arbitrary "vision" low energy design; environmental protection materials use. Regular appearance, convenient for splicing, assembly and installation and other industrial needs.

Conversely, the LCD TV enclosures are all non-metal materials. The internal board line is designed for civil use, and it can easily cause mechanical aging when turned on for a long time. In addition, the appearance of civilian TVs is mostly irregular, with digital signage splicing screen system, appearance arc system, etc. as ancillary and visual affiliated facilities. The overall appearance and effect of construction will be greatly reduced.

Fifth, the port <br> <br> mosaic screen LCD using multi-port, such as interface industrial and professional RGBBNC chromatic aberration with self-locking mechanism DVI-D video interface; the other hand, the LCD TV is not self-locking color BNC input interfaces and DVI-D interface;

Sixth, the control interface can be used <br> <br> LCD screen splicing S232 serial control, password control and open up to more than 200 schools, hospitals and solutions to meet a variety of industrial environments. When it is convenient to use multi-splicing screens, all display devices can be controlled without using a remote controller, and various industrial requirements such as support, timing boot, delay boot, and machine self-checking can be provided. LCD TV can also use S232 serial control. However, only the control commands provided by the remote controller can be realized. It cannot achieve industrial control.