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| What factors will cause the display effect of LED display wall | ||||
As we all know, most of today's commercial advertisements, wedding ceremonies, commercial activities, etc. are completed through the LED display screen. If the display effect is not good, the cool and shocking commercial programs will be greatly discounted, resulting in negative evaluation, which will bring a lot of losses to the businessmen who hold this event. So what factors will cause the display effect of LED display? Shenzhen LED display manufacturers. 1. flatness of screen and reflectivity of screen surface: local protrusion or depression of LED display screen will cause blind angle in the viewing angle of the display. The flatness of the surface must be within ± 1mm to ensure that the displayed image is not distorted. The LED display screen of intelligent uses the panel and LED light-emitting tube treated by special process to ensure the flatness of the screen surface, reduce the reflectivity of the LED screen panel, and increase the contrast of the display (the contrast is easier for the human eye. Determine the light dark conversion process in the dynamic image). 2. gray scale of LED display screen: gray scale refers to the brightness level that can be distinguished from the darkest to the brightest in the single primary color brightness of full-color LED display screen. The higher the gray level, the richer the color, and the more gorgeous the color; On the contrary, if the display color is single, the color transformation is relatively simple. The increase of gray level can greatly increase the color depth, so that the display level of image color increases geometrically. The LED display of Dayuan intelligent adopts high-quality LED lamps, with a maximum gray level of 16384. The brightness is low and the gray level is high, making the picture clearer and brighter, and the image quality more delicate. 3. point spacing: the point spacing has a very obvious impact on the definition. The smaller the point spacing, the finer the screen display. The reduction of point spacing must be based on mature technology. From the current trend, it is an inevitable choice for the market to reduce the dot spacing. However, relatively speaking, the smaller the point distance, the higher the input cost and the higher the price. 4. quality and failure rate of lamp beads: LED display screen is composed of thousands of red, green and blue LED beads in groups. With the increase of service time, the brightness of LED beads will gradually decrease. The attenuation rate of LED bead brightness is related to LED chip, auxiliary materials and packaging technology. Generally speaking, after 1000 Ma and 20 mA ambient lighting tests, the attenuation of red LED beads shall be less than 7%, and that of blue and green LED beads shall be less than 10%. In the future, the uniformity of red, green and blue attenuation will have a significant impact on the white balance of panchromatic LED display, and then affect the display fidelity of the display. At the same time, the failure rate of good lamps is very low. Even if they are aged for 72 hours, the failure rate will not be higher than 1 in 10000. 5. stability and safety in use: when the LED display operates, stability and safety are particularly important. The box design of LED display screen is very important. An increase in the thermal conversion temperature of the component will cause an image. Quality degradation. Therefore, good ventilation and heat dissipation design is an indispensable index in cabinet design. On the one hand, it is circuit protection, on the other hand, it is safety, dust-proof and waterproof. At the same time, the matching power supply can not just look at its low price and ignore its performance and quality. Due to after-sales guarantee, the power supply under different temperature conditions will have different working stability, output voltage and load capacity. Therefore, its security performance directly affects the image quality. As long as the preventive measures for LED display screen products can be guaranteed, the display effect of LED display screen will reach the best state, but there is another point to note, that is, the display of LED use environment. As some bad weather will directly lead to the service life and display effect of LED display screen, I hope these five points can be helpful to the majority of users. |
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