When purchasing LED electronic displays, customers are often concerned about how to identify quality and how to evaluate the quality of LED displays. The following are several aspects to evaluate the quality of LED electronic displays:
Flatness: The surface flatness of a high-quality LED electronic display should be within ±1mm. This helps keep the display image from distorting, which can cause dead spots in viewing angles due to localized bumps or depressions. The manufacturing process has an important impact on flatness.
Brightness and viewing angle: The brightness of the indoor full-color LED screen should be above 800cd/m², and the brightness of the outdoor full-color LED screen should be above 1500cd/m² to ensure normal operation. The brightness is mainly determined by the quality of the LED die. The larger the viewing angle, the greater the audience for the display. The size of the viewing angle is mainly determined by the packaging method of the die. Here's what you need to know about nit brightness.
White balance effect: White balance effect is one of the most important indicators of the display screen. Ensure that the ratio of the three primary colors of red, green and blue is 1:4.6:0.16 to obtain pure white. The quality of white balance is mainly determined by the impact of the display's control system and the die on color reproduction. LED displays are divided into single-color, dual-color and full-color types.
Color restoration: Color restoration refers to the display's ability to restore colors, that is, the color displayed on the display must be highly consistent with the color of the playback source to ensure the reality of the image.
Whether there are mosaics and dead spots: Mosaics refer to small squares that appear on the display screen that are always bright or black, and may be caused by poor quality connectors. The dead spot refers to a single point that appears on the display screen that is always bright or always black. The number of dead spots is mainly determined by the quality of the die.
Whether there are color blocks: Color blocks refer to the obvious color difference between adjacent modules. The color transition is based on the module, which may be caused by factors such as poor control system, low grayscale, low scanning frequency, etc.
When choosing an LED electronic display, customers can pay attention to the above aspects, especially flatness, brightness, white balance effect, color reproduction, and whether there are mosaics, dead spots, color blocks, etc., to comprehensively judge the quality of the LED display. At the same time, choosing a well-known brand and a manufacturer with a good reputation is also an important way to ensure the quality of LED displays.
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