As an important medium for information dissemination in modern cities, the quality of outdoor LED display screens directly affects the dissemination effect of information and the beauty of the city. Therefore, there are strict standards and requirements for the acceptance of outdoor LED display screens. The following are the main acceptance criteria for outdoor LED display screens:
Color reproduction:
Color reproduction refers to the ability of the display screen to restore colors. It requires that the colors displayed by the display screen are highly consistent with the colors of the playback source and that the realism of the image is guaranteed. This is one of the important indicators for evaluating the quality of the display screen. What should I do if the LED display screen cannot load an image?
Color block color difference:
Color block refers to the obvious color difference between adjacent modules. The color transition is based on the module. The cause of the color block phenomenon may be poor control system performance, insufficient grayscale level or low scanning frequency. Provide you with 7 guidelines for purchasing Korean LED modules.
Flatness:
The surface flatness of the LED display should be within plus or minus 1mm to ensure that the displayed image is not distorted. Local convexity or concave may cause blind spots in the viewing angle of the display. The quality of flatness is mainly determined by the production process.
Mosaic phenomenon and dead point phenomenon:
Mosaic phenomenon refers to the small square blocks that are always bright or always black on the screen, that is, the module necrosis phenomenon, which is mainly caused by the poor quality of the connector. Dead point refers to a single point that is always bright or always black on the LED display. The number of dead points is mainly determined by the quality of the tube core. Do you know the difference between CSP and COB LED chips?
Brightness and viewing angle:
The brightness of the indoor full-color screen should be above 900cd/m², and the brightness of the outdoor full-color screen should be above 1600cd/m² to ensure the normal operation of the display. The brightness is mainly determined by the quality of the LED tube core. The size of the viewing angle directly determines the number of audiences of the display, so the larger the better, which is mainly determined by the packaging method of the tube core. Here are ten differences between indoor and outdoor LED walls.
White balance effect:
White balance effect is one of the important indicators of the display. Pure white will be displayed only when the ratio of the three primary colors of red, green and blue is 1:4.6:0.16. The quality of white balance is mainly determined by the control system of the display, and the tube core also affects the color reproduction.
Waterproof and exposure effect:
As outdoor LED displays are often exposed to various weather conditions, they need to have good waterproof and anti-exposure performance. This is usually achieved through special packaging technology and materials. Take you to a comprehensive and comprehensive understanding of outdoor LED digital signage.
Stability and reliability:
The stability and reliability of the display are also important acceptance criteria, including long-term operation without failure and strong anti-interference ability.
Energy consumption and environmental protection:
With the improvement of environmental awareness, the energy consumption and environmental protection performance of LED displays are also increasingly valued. Low-energy and high-efficiency LED displays are more popular.
Convenience of installation and maintenance:
The convenience of installation and maintenance of the display is also a factor to be considered during acceptance, including modular design, easy-to-replace parts, etc.
In summary, the acceptance criteria for outdoor LED displays involve multiple aspects, from color reproduction to stability, and every detail is related to the final performance and service life of the display. Users should strictly follow these standards during acceptance to ensure the quality and performance of the display.
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