LCD splicing in the current market applications based on years of digital video wall display system R & D design and practical applications, in the current ultra-narrow side did professional LCD screen, integrated into the image processing technology, multi-signal real-time display technology, leading in the industry The splicing wall technology has developed a flat panel display splicing wall product.
LCD splicing screen products have been overhauled in different sizes and models. Users can often choose different LCD splicing product brands. However, when a product has a problem, there are basically few brands that can provide solutions. Faced with the increasingly deep application of LCD splicing screens, different failures have emerged, and professional LCD splicing company Guorui Optoelectronics has given customers solutions to their concerns.
LCD splicing wall image is not clear
The phenomenon of unclear image of the LCD video wall includes: low brightness, poor edge focus, ghosting (image smearing), interference fringe stacking (signal source resolution is too high), or image jaggies (drop frame), if displayed The effect is not ideal and it cannot be immediately determined that there is a problem with a product.
Excluded first: Guorui proposed that it be possible to conduct inspections in stages first, assuming that there is a problem in one segment, and after checking out and eliminating it, the problem is solved and the time for inspection of other parts can be saved. If the problem is not resolved, all devices must be eliminated one by one. Check whether the resolution of the signal source is the same as the resolution of the display terminal. Only in this way can you form a point-to-point display. The brightness of the image can also be significantly improved if it is a video signal. It depends on whether the system can adapt to the display terminal. If the requirements of the customer display terminal cannot be met, the nature of the signal can be changed by changing the device or adding a conversion device. For example, the use of an amplifier can increase the video signal VIDEO to VGA. signal.
Second, see if the bandwidth of the splitter and matrix switcher and its impedance to the signal source can make the loss of the image within the standard range. Finally, it is checked whether the display device is focused and converged, and whether the signal processing circuit is good. The most important thing is: During construction, Guorui recommends strict control of signal connectors, a solid interface, neat cables, separate power cables and signal cables, and reliable grounding. If UPS power is not used, the grounding of AC power needs to be done. To the common ground, two lines are marked for inspection and management.
Guo Rui analysis: According to the phenomenon of failure, if not synchronized, focus on checking the device's synchronization interface and transmission cable, and the comparison of the signal source and display terminal synchronization frequency range. By analyzing and shortening the inspection time, the image is ghosted. Look at whether the transmission cable is too long or too thin. The solution is to change the line or increase the signal amplifier and other equipment. Poor focus can adjust the display terminal, etc.
LCD splicing screen solve
A: Check whether the connection between the LCD splicing screen and the graphics card is loose. Poor contact can cause "clutter" or "noise"-like flower screens to be the most common phenomenon.
Second: Check if the video card is over-clocked. If the video card is over-used excessively, irregular and intermittent stripes will appear. At this time, the frequency of overclocking should be appropriately reduced. Note that we must first reduce the memory frequency.
Three: Check the quality of the video card. If the video card appears after the replacement of the video card, and after the first and second strokes fail to work, check whether the anti-electromagnetic interference (EMI) and the quality of the electromagnetic shielding of the video card are over. The specific method is: Place some components that may produce electromagnetic interference away from the video card installation (such as hard disk) as far as possible, and then see if the video screen disappears. If it is determined that the electromagnetic shielding function of the graphics card is off, the graphics card or the self-made shielding cover should be replaced.
Four: Check whether the resolution or refresh rate of the LCD splicing screen is set too high. The resolution of the LCD splicing screen is generally lower than that of the CRT monitor. If the resolution exceeds the best resolution recommended by the manufacturer, there may be a phenomenon of a flowering screen.
Five: Check if an incompatible graphics card driver is installed. This kind of situation is generally easy to overlook, because the graphics card driver is updated faster and faster (especially NVIDIA graphics cards), and some users can't wait to install the latest version of the driver. In fact, some of the latest drivers are either test versions or versions that are optimized for a particular graphics card or game. Using such drivers can sometimes lead to the appearance of flower screens. Therefore, it is recommended that you use Microsoft-certified drivers as much as possible. It is best to use drivers provided by the graphics card manufacturers.
Six: If you can't solve the problem after using the above five strokes, you may have problems with the quality of the LCD splicing screen. At this point, replace the other monitor for testing.
LCD splicing screen products have been overhauled in different sizes and models. Users can often choose different LCD splicing product brands. However, when a product has a problem, there are basically few brands that can provide solutions. Faced with the increasingly deep application of LCD splicing screens, different failures have emerged, and professional LCD splicing company Guorui Optoelectronics has given customers solutions to their concerns.
LCD splicing wall image is not clear
The phenomenon of unclear image of the LCD video wall includes: low brightness, poor edge focus, ghosting (image smearing), interference fringe stacking (signal source resolution is too high), or image jaggies (drop frame), if displayed The effect is not ideal and it cannot be immediately determined that there is a problem with a product.
Excluded first: Guorui proposed that it be possible to conduct inspections in stages first, assuming that there is a problem in one segment, and after checking out and eliminating it, the problem is solved and the time for inspection of other parts can be saved. If the problem is not resolved, all devices must be eliminated one by one. Check whether the resolution of the signal source is the same as the resolution of the display terminal. Only in this way can you form a point-to-point display. The brightness of the image can also be significantly improved if it is a video signal. It depends on whether the system can adapt to the display terminal. If the requirements of the customer display terminal cannot be met, the nature of the signal can be changed by changing the device or adding a conversion device. For example, the use of an amplifier can increase the video signal VIDEO to VGA. signal.
Second, see if the bandwidth of the splitter and matrix switcher and its impedance to the signal source can make the loss of the image within the standard range. Finally, it is checked whether the display device is focused and converged, and whether the signal processing circuit is good. The most important thing is: During construction, Guorui recommends strict control of signal connectors, a solid interface, neat cables, separate power cables and signal cables, and reliable grounding. If UPS power is not used, the grounding of AC power needs to be done. To the common ground, two lines are marked for inspection and management.
Guo Rui analysis: According to the phenomenon of failure, if not synchronized, focus on checking the device's synchronization interface and transmission cable, and the comparison of the signal source and display terminal synchronization frequency range. By analyzing and shortening the inspection time, the image is ghosted. Look at whether the transmission cable is too long or too thin. The solution is to change the line or increase the signal amplifier and other equipment. Poor focus can adjust the display terminal, etc.
LCD splicing screen solve
A: Check whether the connection between the LCD splicing screen and the graphics card is loose. Poor contact can cause "clutter" or "noise"-like flower screens to be the most common phenomenon.
Second: Check if the video card is over-clocked. If the video card is over-used excessively, irregular and intermittent stripes will appear. At this time, the frequency of overclocking should be appropriately reduced. Note that we must first reduce the memory frequency.
Three: Check the quality of the video card. If the video card appears after the replacement of the video card, and after the first and second strokes fail to work, check whether the anti-electromagnetic interference (EMI) and the quality of the electromagnetic shielding of the video card are over. The specific method is: Place some components that may produce electromagnetic interference away from the video card installation (such as hard disk) as far as possible, and then see if the video screen disappears. If it is determined that the electromagnetic shielding function of the graphics card is off, the graphics card or the self-made shielding cover should be replaced.
Four: Check whether the resolution or refresh rate of the LCD splicing screen is set too high. The resolution of the LCD splicing screen is generally lower than that of the CRT monitor. If the resolution exceeds the best resolution recommended by the manufacturer, there may be a phenomenon of a flowering screen.
Five: Check if an incompatible graphics card driver is installed. This kind of situation is generally easy to overlook, because the graphics card driver is updated faster and faster (especially NVIDIA graphics cards), and some users can't wait to install the latest version of the driver. In fact, some of the latest drivers are either test versions or versions that are optimized for a particular graphics card or game. Using such drivers can sometimes lead to the appearance of flower screens. Therefore, it is recommended that you use Microsoft-certified drivers as much as possible. It is best to use drivers provided by the graphics card manufacturers.
Six: If you can't solve the problem after using the above five strokes, you may have problems with the quality of the LCD splicing screen. At this point, replace the other monitor for testing.
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