Precautions for acceptance of outdoor full-color LED display!

Publisher: Supplier of LED Display Time: 2022-12-07 14:32 Views: 1015

With the rapid development of LED display technology, its application fields have become more and more extensive in recent years, especially in the presentation of various large-scale theatrical performance stage effects, it is even more beautiful, because it can accurately reflect people's creativity Thinking, presenting a colorful visual effect. So what technical indicators should we pay attention to when checking and accepting outdoor full-color LED displays? Today, the editor from Liancheng will take everyone to discuss and understand.


1. Brightness and viewing angle


The brightness of the indoor full-color screen must be above 800cd/m2, and the brightness of the outdoor full-color screen must be above 1500 cd/m2 to ensure the normal operation of the display screen, otherwise the displayed image will not be clear due to the low brightness. The brightness is mainly determined by the quality of the LED tube core. The size of the viewing angle directly determines the audience of the display screen, so the bigger the better. The size of the viewing angle is mainly determined by the packaging metho of the die.


2. Flatness


The surface flatness of the display screen should be within ±1mm to ensure that the displayed image is not distorted, and local protrusions or recesses will cause dead angles in the viewing angle of the display screen. The quality of flatness is mainly determined by the production process.


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3. Color reduction


The color reproduction refers to the color restoration of the display screen, that is, the color displayed on the display screen must be highly consistent with the color of the playback source, so as to ensure the realism of the image.


4. White balance effect


The white balance effect is one of the most important indicators of the display. In terms of color science, when the ratio of the three primary colors of red, green and blue is 1:4.6:0.16, pure white will be displayed. If there is a slight deviation in the actual ratio, there will be a deviation in white balance. Generally, it is necessary to pay attention to whether the white is blue or yellowish. green phenomenon. The quality of the white balance is mainly determined by the control system of the display screen, and the die also affects the reproduction of the color.


5. With or without color blocks


Color block refers to the obvious color difference between adjacent modules. The color transition is based on the module. The color block phenomenon is mainly caused by poor control system, low gray level and low scanning frequency.


6. Whether there is mosaic, dead point phenomenon


Mosaic refers to the small squares that appear on the LED display screen that are always bright or black. It is a phenomenon of module necrosis. The main reason is that the quality of the connectors used in the display is not up to standard. The dead point refers to a single point that is always bright or dark on the display screen. The number of dead points is mainly determined by the quality of the die.


7. Gray scale


The gray level is the number of technical processing stages of the display screen from the darkest to the brightest. The higher the gray level, the richer and more vivid the color; the more delicate the picture, the easier it is to express rich details. At present, the domestic LED display mainly adopts an 8-bit processing system, that is, 256 (28) gray levels. A simple understanding is that there are 256 brightness changes from black to white. Using RGB three primary colors can form 256×256×256=16777216 kinds of colors. That is commonly referred to as 16 million colors. The display screens of international brands mainly adopt a 10-bit processing system, that is, 1024 levels of grayscale, and the three primary colors of RGB can form 1.07 billion colors.


8. Refresh frequency


Refresh frequency refers to the number of times the display screen is repeatedly displayed by the display screen. Theoretically speaking, the higher the refresh frequency, the better the display effect. The screen refresh rate is greater than 300HZ.


The above is the relevant knowledge about the matters needing attention in the acceptance of outdoor full-color LED displays compiled by Liancheng Xiaobian for you. Through the above 8 precautions, we understand that when the LED display manufacturer completes the project, we should pay attention to it when inspecting and accepting Items, through which you can clearly understand the quality of the LED display manufacturer's project completion. Lianchengfa is a world-leading provider of LED display applications and solutions, as well as a national-level professional and special new small giant enterprise. The main business covers four major sections: "Smart City", "Cultural Tourism Commercial Performance", "Commercial Display Engineering", and "Content Technology". It has the world's leading automated production equipment, modern post-doctoral research laboratories and comprehensive sales and services. team. Friends who want to buy LED displays can also contact us Lianchengfa led display manufacturer, a big country brand, trustworthy!