With many advantages such as high brightness, clear picture, energy saving and environmental protection, LED display screens have been continuously developed and innovated in recent years, and their applications have become more and more extensive. So how to distinguish the advantages and disadvantages of the LED display? The following editor will give you some analysis:
1. Brightness and viewing angle
The brightness of the indoor LED full-color display must be above 800cd/m2, and the brightness of the outdoor LED full-color display must be above 1500cd/m2 to ensure the normal operation of the display, otherwise the display will not be clearly displayed because the brightness is too low. Image. The size of the brightness is mainly determined by the quality of the LED die, so the quality of the LED chip is very important. The size of the viewing angle directly determines the audience of the display screen, so the larger the better. The size of the viewing angle is mainly determined by the packaging method of the LED die. The level of brightness and the size of the viewing angle determine whether it is a high-quality LED display.
2. Flatness
The flatness of the surface of the LED electronic display should be within ±1mm to ensure that the displayed image is not distorted, and local protrusions or recesses will cause a blind spot in the viewing angle of the display. The quality of the flatness is mainly determined by the production process. Looking at the flatness of the display screen can not only see the quality of the product, but also whether the production process of an LED display manufacturer is superb and perfect.
Third, the consistency of color
Color consistency refers to the reducibility of the color 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.
Four, gray scale and refresh rate
For the LED display used for stage rental, the gray scale and refresh frequency requirements are relatively high. The presence or absence of 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. .
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