There are many factors that affect the display effect of the LED display , such as brightness, dot pitch, flatness of the screen, attenuation and failure rate of the lamp bead, use environment, and the like. Next, Xiaobian will explain in detail the five factors that affect the display effect of the LED display .
First, the pixel spacing
The effect of pixel pitch on sharpness is very obvious. The smaller the pixel pitch, the finer the picture display. The reduction of pixel pitch must have mature technology as the core support. From the current trend, the reduction of pixel pitch is an inevitable choice for the market. However, the smaller the pixel pitch, the higher the cost of the input and the higher the price.
Second, the screen flatness and screen surface reflectivity
Partially convex or concave of the full-color LED display will cause the viewing angle of the display screen to have a dead angle, and the surface flatness should be within ±1mm to ensure that the displayed image is not distorted. The LED display screen is applied to the panel and the LED light-emitting tube. The special process treatment can reduce the reflectivity of the LED panel while ensuring the flatness of the surface of the screen , and can also improve the contrast of the display screen (the higher the contrast, the easier it is for the human eye to distinguish the light and dark transition process in the moving image ) .
Third, LED display gray level
The gray level refers to the brightness level that can be distinguished from the darkest to the brightest in the single primary color brightness of the full color LED display. The higher the gray level, the richer the color, the more vivid the color ; on the contrary, the display color is single, change simple. The increase of the gray level can greatly increase the color depth, so that the display level of the image color increases geometrically. Alida COB small-pitch LED display uses high-quality LED lights, low-light and high-gray, the picture is more clear and bright, and the picture quality is more delicate.
Fourth, the quality and failure rate of the lamp
　　 LED display screen is composed of tens of thousands or even hundreds of thousands of red, green and blue LED lamp beads. The LED bead will slowly decay as the usage time increases. The attenuation speed of LED lamp bead brightness is related to LED chip, auxiliary material and packaging process. Generally, after 1000 hours and 20 milliamperes of normal temperature lighting test, the attenuation of the red LED lamp bead should be less than 7%, and the attenuation of the blue and green LED lamp bead should be less than 10% . The consistency of the red, green and blue attenuation has a great influence on the white balance of the outdoor full-color LED display in the future, which in turn affects the display fidelity of the display. At the same time, good lamp bead failure rate is low, even if the aging 72 hours failure rate will not be higher than one in ten thousand.
Fifth, the use of stability and security
　　 Stability and safety are particularly important when the LED display is in operation. The design of the LED display box is very important. The temperature of the component's thermal conversion increases, which will result in degraded image quality. Therefore, good ventilation and heat dissipation design is an indispensable indicator in the design of the cabinet. On the one hand, it is circuit protection, on the other hand, it is safe, etc., as well as dustproof and waterproof. At the same time, the supporting power supply can not only look at the low price and ignore its performance and quality. The power supply under different temperature conditions, its working stability, output voltage and load capacity will be different, because it bears the after-sales guarantee. Therefore, its security performance directly affects the quality of the picture.
After ensuring the above five points, I want the indoor LED display to achieve the best display effect, and also to ensure a good use environment. If the actual working temperature exceeds the scope of use specified by the product, not only will the life of the product be shortened, but the product itself will also be affected. Serious damage. Pay attention to the best shooting distance when shooting, LED screen with different dot pitch and different filling factor , the appropriate shooting distance is different. Of course, when the user chooses the LED display product, you should choose a regular LED display manufacturer. This will be safer and safer in terms of LED display quality, price and after-sales service !
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