The installation of the LCD video wall is not like ordinary display equipment, just simply put it on and install it.
The installation of the LCD video wall should not only choose the installation site carefully, but also pay attention to the light around the installation environment, but also need to pay attention to the wiring, and there are also requirements for the frame.
How to build an LCD video wall
The choice of LCD video wall installation floor:
The installation floor of the LCD video wall should be flat, because the entire system of the LCD video wall is relatively large in terms of volume and weight.
The selected floor also needs to have a certain ability to bear weight. If the floor is tile, it may not be able to bear its weight. Another point is that the installed ground must be anti-static.
Cautions for video wall wiring:
When installing the LCD video wall, pay attention to distinguishing its power cord and signal line when wiring, and install them in different places to avoid interference.
In addition, according to the size and installation position of the screen of the entire project, calculate the length and specifications of the various lines needed, and calculate the needs of the entire project.
LCD video wall requirements for ambient light:
Although the brightness of the LCD video wall is very high, it is still limited after all, so the light around the environment where you choose to install cannot be too strong. If it is too strong, you may not be able to see the picture on the screen.
The light that may enter near the screen (such as a window) should be blocked if necessary, and it is best to turn off the light when the device is running to ensure the normal operation of the device. Do not install a light directly in front of the screen, just install a downlight.
Video wall frame requirements:
In order to facilitate the maintenance of the LCD video wall in the future, the frame edging must be a detachable edging. A gap of about 25mm is reserved between the inner edge of the outer frame and the outer edge of the splicing wall. For large splicing walls, the margin should be appropriately increased according to the number of columns.
In addition, in order to enter the cabinet for maintenance later, the maintenance channel is in principle not less than 1.2m wide. It is advisable to press the detachable side strip 3-5mm from the edge of the screen. After the cabinet and the screen are fully installed in place, fix the detachable side strip finally.
Ventilation requirements for installation environment:
In the maintenance passage, air conditioners or air outlets must be installed to ensure that the equipment is well ventilated. The location of the air outlet should be as far away as possible from the LCD splicing wall (about 1m is better), and the wind from the air outlet should not be blown directly against the cabinet to avoid damage to the screen due to uneven heating and cooling.
At the LCD splicing construction site, the installation and debugging should be based on the phenomenon reflected by the fault to determine the cause, and the synchronization interface and transmission cable of the equipment should be checked, and the synchronization frequency range of the signal source and the display terminal should be compared.
If the image has ghosting, check whether the transmission cable is too long or too thin. The solution is to change the cable to test or add a signal amplifier and other equipment.
If the focus is not ideal, you can adjust the display terminal. Facing the emergence of problems, we must first learn to analyze, so as to better solve the root cause of the problem. Through strong analysis, inspection time can be shortened.
These methods are some methods and skills for debugging after installation. The installer must be proficient and good. Only professional people can do professional things.
Professional knowledge about LCD video wall technology
Manufacturers who develop and produce LCD video walls know that the production process of industrial-grade LCD screens is much higher than that of ordinary display equipment. Even with the same panel level, the production requirements for LCD video walls are more stringent.
Although many security surveillance companies have begun to use LCD video walls, their understanding of LCD video walls is too simple, and their understanding of industrial-grade display equipment is very simple.
In fact, the construction and selection of many LCD video wall engineering companies do not meet the specifications at all, even if they choose foreign brands. Many large-screen display projects have not fully exploited the advantages of LCD video walls, and have not achieved high-definition effects with minimal joints.
From a microscopic analysis, more companies only know about installation and lack the necessary knowledge. Today, LCD video wall manufacturers will add some professional knowledge for everyone.
1. The comparative advantages of LCD video walls and other computer monitors
The LCD video wall uses an A-level LCD panel, high reliability to ensure quality display. For large screens, the role of the LCD panel is undoubtedly the most important, which accounts for about 70% of the cost, and the general display chooses the A-level panel There will be an increase.
At present, LCD panels are divided into A+, A-, B+, and B-. The B+ panel is a good choice for computer monitors. However, the operating environment of the LCD video wall also determines the higher requirements for LCD panels.
2. Ultra-narrow frame design of LCD video wall
The LCD video wall has no frame, slim design on both sides, and uses less than 1 mm cable, which is significantly better than the BSV LCD splicing technology of general display equipment.
It is bound to set off an upsurge of seamless LCD splicing in the monitoring field, which will form a "blowout effect" of market demand.
3. High resolution LCD video wall supports point-to-point display
For “other devices”, the main focus is on the chip for signal input processing. Although the parameters shown can reach 1080P, they are not full HD HDCP displays. The liquid crystal displays are not point-to-point horizontally from 1920 to 1920. Vertical display panel composed of 1080 pixels
4. The LCD video wall uses high-quality electronic components (IC, capacitors, inductors, etc.)
The quality of LCD video wall products has a strict component selection system and a complete production line. The products of each production line go through rigorous roasting machines and tests.
Unlike "other machines", the procurement time of panels is very tight when they leave the factory, and the production and assembly are free to leave the factory. Because "other machines" do not have products in stock, the panel assembly, production, processing, and installation for customers only when they are delivered, the time is generally very short.
The quality of ICs, capacitors, and inductors directly affect the life and safety of the display.
5. The LCD video wall has unique DNIEPro color and signal enhancement complementary technology
For the liquid crystal display, the control IC that restores the precise control of the color can make the display effect of the liquid crystal display more colorful.
Its control IC can screen out 1 billion best colors from about 68.6 billion colors, which is more accurate in restoring the colors of objects.
The general display signal board simply decodes the signal and displays it directly, without IC processing.
6. The LCD video wall has a dynamic enhancement signal to ensure the dark and white color and dynamic smear phenomenon
The design and material selection of the IC chip and control circuit of the display are also extremely important. The first-tier manufacturers have their own panel production lines, which can design and develop the control circuit from the most professional perspective. From the materials to the workmanship, the large-screen display can be guaranteed to be long. Stable work with time, and strengthen processing of various input signals at the same time to ensure the effectiveness of grayscale.
7. The LCD video wall adopts advanced power supply DPMS
The DPMS management system maximizes the power supply and signal board to protect the LCD panel while reducing power consumption.
In the "lamp driving circuit" of the display, the high-voltage bar is connected to the lamp tube inside the panel to light it and control its brightness. Therefore, the brightness of the display is mainly related to the number of lamps placed in the panel, the more the number, the higher the brightness.
For "other devices", all CCFL tubes in the panel are driven to light up, so that the display will work with high brightness for a long time and will cause long-term heat to seriously damage the life of the panel. Why is the LCD video wall called a low-heat panel? The mystery is not on the LCD panel, but on the drive motherboard to use the chip to automatically light up the CCFL lamp in the panel.
