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In the digital age, LED screens have been fully integrated into our daily lives. They are widely used for displaying public announcement information, playing commercial advertisements, and serving as backgrounds, lighting effects, voiceovers, and other roles in stage performances, gradually expanding to cutting-edge scenes such as naked eye 3D LED Display and XR virtual shooting. So, have you noticed that some LED screens have a surface that leans more towards pure black, while others appear as a slightly eye-catching gray white?!The appearance differences of LED screens mentioned above are mainly due to the significant differences in the appearance of the LED beads used. This inevitably brings up two unique concepts of LED beads, namely white LED and black LED. Today, let's explore the difference between LED from gray white to pure black? What performance gains does black LED bring to LED screens?Not only the appearance, but also the packaging process determines the basic characteristics of LEDFirstly, let's understand what white LED and black LED are?In fact, the concept of the two stems from their different appearances. In the unlit state, the white LED surface presents a gray white tone, while the black LED displays a deeper pure black appearance. For a more intuitive understanding, we refer to them as white LED and black LED respectively.So, what is the reason for the obvious appearance difference between the two?This is because the brackets used by the two are different. The white LED uses a white bracket to package the LED light-emitting chip; On the contrary, black LED lights use black brackets. In the early days, with limited technical conditions and insufficient brightness of LED chips, white brackets were beneficial for enhancing the light reflection inside the LED beads, thereby improving the overall brightness output of the LED screen. With the improvement of LED chip luminous performance and the gradual increase of end users' requirements for LED screen display performance, black brackets are increasingly being used in LED packaging. The black bracket not only reduces the reflection of light inside the LED beads, but also significantly absorbs ambient light, thereby reducing unnecessary interference of light intensity on the display effect of LED screens, and improving the contrast and color reproduction ability of the screen.Three major performance advantages, black LED is the future choice for high-end LED screensSo, why are most high-end LED screens now presenting a deeper black color on the surface, using black LED lights?The following three aspects explain why black light LED is the future choice for high-end LED screens.Firstly, black LED lights can bring higher contrast to LED screens.Black LED lights can bring a contrast ratio of over 10000:1 to LED screens; In contrast, white LED lights typically only provide a contrast ratio of 5000:1, or even lower. Generally speaking, LED screens using black LED lights can present a purer and deeper black color, creating a more distinct sense of hierarchy with the white areas in the picture, bringing the audience a more delicate visual texture.Secondly, black LED lights have more precise color reproduction capabilities.The light reflected by the white bracket of a white LED can easily interfere with darker colors, causing color shift and affecting the color reproduction performance of the LED screen. And black LED lights can effectively avoid this problem, presenting more accurate color reproduction capabilities, which is obviously more in line with the needs of high-end application scenarios.Furthermore, black LED lights indicate better durability and stability.To achieve brightness performance comparable to white LED, black LED is usually equipped with larger LED light-emitting chips. This not only enhances the durability of the lamp beads, but also effectively avoids brightness attenuation and uneven brightness in the long run, ensuring the stability and consistency of the display effect and demonstrating excellent reliability.Comparison of contrast between white LED (left) and black LED (right)Suitable for different scenarios, white LED and black LED have their own strengths Although black LED ensures a significant advantage in LED screen display effect, as mentioned at the beginning of this article, the coexistence of the two in the market is due to their performance differences and different application scenarios they focus on.Generally speaking, LED screens using white LED lights are mainly used in scenes that require high brightness. Generally speaking, higher brightness in such scenes can display key information more clearly, and the requirements for image quality are not particularly high. In scenarios such as large outdoor advertising LED screens, government agencies, and public organization information bulletin screens, where high brightness, wide viewing angle, and low cost are more pursued, white LED lights are clearly the better choice. Black LED lights are mostly used in high-end scenarios, such as art exhibitions, stage rentals, large exhibition halls, and film and television production. High contrast and color reproduction can bring audiences a more ultimate visual enjoyment.

Smart lamp post is a new type of smart city infrastructure that integrates lighting control system, LED information release, 5G base station, video surveillance management, public broadcasting, environmental monitoring, smart sprinkler system, emergency call, new energy vehicle charging pile, manhole cover monitoring, garbage bin monitoring, traffic signal lights/signs and other applications on the basis of traditional lighting functions.With the support of information and communication technologies such as 5G, every lamp post will become a neuron of a smart city, collecting various types of information data into the city's "brain" at all times, making the city warmer and smarter, innovating urban operation and maintenance management methods, and facilitating people's livelihoods.Smart light poles are equipped with devices such as traffic signs, traffic signals, and electronic police, which can improve the chaotic situation of scattered lighting, signal, monitoring, signage, and guidance systems on urban road poles. After the integration of multiple poles, the cleanliness of urban roads can be greatly improved; In addition, by utilizing the advantages of a multi pole integrated carrier platform, various departments of urban management can further improve the digital urban management methods for precise supervision of frontline data perception, event identification, evidence solidification, and case filing and allocation in urban management.Information dissemination is currently the most important profit point for smart light poles, which can help the government with visual promotion, broadcasting public welfare programs, advertising placement, policy promotion, paperless promotion to streets and alleys, etc. Private enterprise investment or PPP/EPC project design and installation are indispensable smart pole products, which are the soul of smart poles.The LED pole screen, with its flexible design and size subdivided according to the height of the pole, can display the same image or different images simultaneously on a road, fully realizing background playback. Each screen has an ID number, and according to this number, you can control it in real time from anywhere with internet access, as long as you have a computer. 

Support customization of any curved surface with a diameter of ≥ 815mmSupport module, receiving card, and power pre maintenance/pre and post installationSupport installation methods such as floor to ceiling, wall mounted, and lifting  Due to the increasing demand for flexible LED display screens, we have conducted research and long-term trials. Based on market demand, we have customized two die cast aluminum boxes for flexible screens. The box size is designed to be 320 * 480, and the box can be designed and cut according to the size of the screen. In other words, it can be made into a box size of 320 * 160 or 320 * 320, ensuring the flatness and clarity of small pitch LED displays.