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When the LED display is in use, it is inevitable that there will be some problems. This will affect normal work and display efficiency. So what are the skills when repairing the LED display? Among them, there are more problems. 1. Interface problems. Phenomenon: The computer information is not displayed, check the line. 2. Power supply problem. The LED display uses a low-voltage high-current power supply, which is not much different from an ordinary DC power supply 3. Driver problems. There is no display in each row or column. In this case, it corresponds to the problem of the drive circuit, and it is time to replace it. 4. Display problem. Long-term use of the LED display may cause damage and aging. At this time, it is time to repair and replace parts. According to the situation of the user's display screen, it can be divided into the following three types: 1. Same display unit board interface The display unit boards of some manufacturers are not standard. If the unit board interfaces are the same, then the upgrade operation can be carried out directly. This method is both low cost and high efficiency. 2. The interface type of the display unit board is the same If the user display unit board interface is different from the standard interfaces listed above, but the number and type of signals are the same, then this LED display can also be upgraded. 3. Completely different display unit board interface The interface of the unit board is completely different from the above, in this case. The cost of the transformation is relatively large. In addition to the display module and some ICs. Other PCB boards, systems, etc. must be replaced.

The update iteration of electronic products is very fast, so in this environment of rapid technological update, how to choose the accessories of the LED grille screen? 1. LED lamp beads and chips: LED lamp beads are not only LED light-emitting tubes, but also key components of LED grid screens. Therefore, reliable quality and mature packaged LED products are required. LED products must have the characteristics of stability, low dispersion, HBM 4000V or more, low attenuation, strong voltage resistance, high brightness, good wavelength and angle consistency, good light distribution and temperature difference, humidity resistance, ultraviolet resistance, etc. 2. Body: The body used for the selection of LED grid screen accessories is generally all steel or aluminum. The overall protection of the cabinet conforms to the IP65 standard, and the heat dissipation problem must be fully considered in the structure. 3. Switching power supply: The led grille screen adopts a certified well-known brand switching power supply module, so when choosing the led grille screen accessories, the switching power supply must undergo rigorous testing, screening and aging. Fully meet the requirements of international safety and quality certification, and meet the requirements of long-term stable and reliable operation of the display. 4. Connector: The connector is an important connector of the led grid screen system and one of the important accessories of the led grid screen. In order to ensure the thickness of the connector plated with pure gold and maintain the best electrical connection performance, high-quality connector products must be used. It guarantees the excellent electrical connection performance of the system under high temperature and high humidity environment, so that the system can operate reliably and reliably for a long time. 5. Circuit board: The circuit board adopts flame-retardant epoxy board, with reasonable design layout and standard wiring, which meets the requirements of electromagnetic compatibility and circuit stability. Processing plants should choose products from well-known manufacturers. 6. Driver chip IC device: When purchasing LED grid screen accessories driver chip IC device, the driver circuit should use the internationally renowned brand constant current driver chip. Maintaining high-precision constant current output and high reliability in a wide temperature range can greatly improve the uniformity and reliability of the display. The main materials of the display system must pass CE, FCC, UL, CCC, ISO9000 and other certifications.

I think mainly from the following aspects, Kindwin Optoelectronics will give you the answer as follows: 1. Installation method The transparent LED screen can be applied to most of the building glass curtain walls, and it can be designed to be compatible with anything. The LED glass screen needs to intervene in the design to reserve an electric control slot before the building design, and the architectural glass is installed to the glass frame. The existing glass curtain wall building cannot be installed. 2. Product weight The transparent LED display does not take up space and is light in weight. The thickness of the main board is only 10mm, and the general weight of the display is 12kg/㎡. It is directly fixed on the glass curtain wall without changing the building structure. LED glass display needs to design luminous glass when designing the building, and the weight of the glass itself exceeds 30kg/㎡. 3. Permeability The transparent LED screen has a permeability of 50%-90%, ensuring the original lighting and perspective function of the glass wall. The LED glass screen has a permeability of 70%-95%, ensuring the original lighting and perspective function of the glass wall. 4. Energy saving and environmental protection No auxiliary heat dissipation equipment is needed, and it can save energy by 30%-50% more than ordinary LED display. 5. Installation operation The transparent LED display screen can be hung on the curtain, attached to the screen, and installed and maintained by a single strip. The LED glass screen can only be installed as a special architectural glass during the construction of the glass curtain wall, and the maintainability is low. 6. Maintenance The LED transparent screen is convenient and quick to maintain, saving manpower and material resources. The LED glass display is almost impossible to maintain, and the building structure needs to be dismantled and the entire glass screen replaced. 7. Display effect Both have a unique display effect because the display background is transparent, which can make the advertising screen feel like it is suspended on the glass curtain wall, and has a good advertising and artistic effect. Summary: It should be said that the transparent LED display belongs to the LED glass screen, but it has more advantages than the LED glass display. The transparent LED screen is more transparent, does not rely on glass, does not have the traditional keel to block the line of sight, simple maintenance, high stability, and high definition. Degrees. It is the first choice in the field of architectural glass curtain wall.

LED grid screen is a grid-shaped display screen composed of light bars, which is widely used in building curtain walls, building tops and other scenes. It plays a very important role in the process of beautifying the city. What is the difference between LED grille screen and ordinary screen? I think Kindwin Optoelectronics will answer you the following mainly from the following aspects: 1. Permeability Due to the hollow design structure, the grid screen has a certain degree of permeability, and the permeability is between 25% and 70%. Ordinary display screens have no possibility of being transparent due to the dense cabinet. 2. Maintenance convenience When repairing the grille screen, you only need to remove a set of light bars and then replace it, which is simple and quick. When the ordinary display screen is repaired, the entire module or cabinet needs to be removed, which is more troublesome for maintenance. 3. Degree of environmental integration The construction of ordinary display screens requires a large-scale steel frame structure, which is very time-consuming and labor-intensive. Moreover, it is opaque, and the black piece when it is not lit will seriously affect the appearance of the building. The LED grille screen is light, thin and beautiful, and has low requirements on the load-bearing capacity of the building. When it is not lit, it has a certain degree of invisibility and is well integrated with the surrounding environment. High permeability ensures the lighting requirements of lighting structures such as floors, glass facades, windows, etc., and does not affect the appearance of the building. 4. weight The weight of ordinary LED display screens exceeds 30kg/m2. When the screen area is too large, the load-bearing capacity of the screen steel structure and the original building structure is a challenge; while the grid screen weighs about 15kg/m2, only a small amount of steel structure is needed, can be installed on the building. 5. Energy saving Ordinary screens require a fan or air conditioning system for heat dissipation due to the high density of lamp beads and high power consumption, so the overall energy consumption is relatively high. The hollow structure design of the LED grid screen, the use of a safe low-voltage power supply, and the reasonable distribution of high-heat components, are combined with the influence of these factors, which can save more than 40% of energy than ordinary LED screens.

I bought an indoor LED display, and after using it for a period of time, I want to convert it to an outdoor display. Is this operation okay? Certainly this cannot be changed. The main reasons are as follows: 1. First of all, in terms of brightness, the brightness of indoor LED displays is far below the standard of outdoor LED displays. The hardware difference between the two is relatively large. The dynamic scanning of the indoor display screen is designed to save costs. The cost of their driver chips is also more than ten times worse. Therefore, in the initial design, the indoor display was restricted to outdoor use. 2. In terms of waterproof performance. Indoor LED display does not have waterproof design requirements, even if it is done, there are some relatively simple waterproof treatments. However, outdoor LED displays are fully prepared when they are produced for waterproof work, and they have been specially designed for waterproofing inside and out. Even if the indoor display screen is modified later, it is difficult to adapt to the harsh outdoor environment when placed outdoors. 3. In terms of viewing distance, it is also greatly restricted. The viewing distance required for indoor displays is generally not too far, unlike the observable distance of outdoor LED displays. When the indoor LED display is moved to the outdoors, the display effect is very poor. The final summary is that there are huge differences between indoor LED display and outdoor LED display in terms of design structure, waterproof, standard, hardware and so on. So basically there is no need to change it, if it is changed, it is basically of little use and fragile.

Thanks to the rapid development of advertising, LED display screens shine with vivid display effects in advertising carriers. Because the use environment of LED display screen is very extensive and more complicated. Therefore, there are high requirements for the display effect and performance of the LED display. So how can the performance of the LED display be more stable and better? 1. High-definition display effect Outdoor LED display screens, as the main carrier of video advertising, have a higher pursuit of high-definition display effects. Because this directly affects the visual experience of the crowd. The effectiveness of advertising. High resolution, high contrast, and high brightness are also prerequisites for ensuring high-quality display. The high brightness can also ensure that it can still be seen clearly under strong daylight conditions. 2. Low energy consumption, energy saving and emission reduction Outdoor LED displays should consciously implement the concept of energy saving, emission reduction, and green development. On the premise of ensuring the effect, we should also pay attention to the consumption of the product, the materials used in the installation, and so on. 3. Large viewing angle and wide viewing area The outdoor LED display is to promote the advertisement and attract the attention of the crowd. So in order to let more people see the picture. The large viewing angle of the LED display should be done well. Let the scope of advertising radiation be greater. Get more the promotional effect. 4. High protection level A good outdoor LED display is definitely not good without good protection, and it usually has to reach the protection level of IP67. Only to be able to cope with the complex outdoor environment and changeable weather. In this way, it can maintain normal operation under complicated conditions. long-term use. The above are the characteristics that a good LED display must have. In addition to these requirements, you can also choose some high-transparent displays according to your needs. This can be well integrated with the surrounding environment. It is more visually impactful.

Reason 1. The quality of the product is not up to the standard, and because of the greed for cheap when buying, the product with low price and poor quality was purchased. 2. Due to large voltage fluctuations, leakage occurs. 3. It is believed that the operation method is incorrect, which affects the effect of the led display. Check the fault and eliminate the problem 1. Check whether the power supply is damaged and whether it can be used normally. If several unit boards are controlled by the same power supply at the same time, you can check whether the output voltage is within the range of 4.9-5.5v. If the voltage is not within this range, it is likely that the power supply is damaged. 2. Check whether the control card can be used normally. First turn on the power and check whether the control card indicator light is on. If it is not, check whether there is 5V power supply and whether the LED electronic screen can display the content. If there is display content, it means that the control card display content function is no problem. . Then use the control card software to find the control card. If it can be found, it means that the function of the control card to send content is normal. If you can't find it, then check whether the communication line is connected properly. If it is connected, there may be a problem with the card. If there is no problem with these two functions, then the control card is good, otherwise you need to replace the new control card. 3. Check whether the unit board is normal. The signals of the LED display are all transmitted from one board to another, so if one board fails, it will affect the use of the following boards, so it is necessary to check the unit boards one by one to check which board has the problem .

For LED displays, dampness is an important factor affecting the service life of the product. Therefore, moisture-proof and waterproof has become the focus of the LED display industry. Moisture absorption refers to the fact that dry substances become damp after absorbing moisture in the air. People often pay attention to the water absorption and waterproof problems of products, but they always ignore the safety hazards caused by product moisture absorption. So how to deal with the humidity of outdoor LED display? There are mainly the following two methods. 1. Moisture-proof outdoor fixed display Install a temperature and humidity monitor at the installation site of the outdoor LED display to monitor the humidity around the screen in time; on the first rainy day after installation or after heavy rain, the screen needs to be checked in time for moisture and water droplets. , Moisture, etc.; under the ambient humidity of 10%~85%RH, the screen should be turned on at least once a day, and the display screen should be kept for more than 2 hours each time the normal work is performed; if the ambient humidity exceeds 90%RH or encounters damp weather needs to dehumidify the application environment of the screen and ensure that the screen works normally for more than 4 hours a day. 2. Moisture-proof outdoor rental screen In the process of using outdoor rental LED display, if it rains, you must cut off the power immediately. If it is too late to remove the screen, you should quickly cover it with the rain-proof cloth you prepared before. Wait until sunny, then take out the cabinet for drying. If you encounter continuous rainy days, you need to open the back cover of the box and use a fan to turn on cold air for drying. And leave it in a ventilated and dry room for more than 8 hours. Reduce the brightness to ensure that the LED display is lit for more than 4 hours, and the moisture in the electronic components is fully dissipated.

The aging of the LED lamp strip is an indispensable step in the production process, and is also a testing process in production test in production testing, to ensure the quality of the LED electronic light bar screen. The aging test for LEDs is a very important process as a product quality control. LED products can improve their performance after aging, and it is also conducive to the follow-up application. LED aging test is a method of improving the characteristics of the bathtub curve according to the product's failure rate, which is to improve the reliability of the product. The aging of the LED lamp strip screen can be divided into two types: white light age (4 hours) and video aging (48 hours). LED aging can be divided into two types: constant current aging and constant voltage aging. The constant current source is that the current remains stable at any time. If there is a problem with the frequency, it is not a constant current. That is to communicate or is a pulsating current. AC or pulsating current sources can be designed to remain constant, but this power supply is difficult to call a constant current source. The constant current aging is to meet the characteristics of LED current, is a scientific LED aging. In addition, the overcurrent impact aging is also an aging means taken by the manufacturer. So what problems do you need to pay attention to the aging test of the LED light bar screen? 1. Test content: white screen, red, green, blue, gray levels, video effect, text effect 2. white screen test time is not less than 24 hours; 3. monochrome, gray levels test is not less than 24 hours; 4. video, text effect test is not less than 24 hours; 5. When subjected to aging test, there must be some people to guard, and once there is a problem, he will immediately report to the professionals.

1, excellent materials The component of the LED display includes a mask, a circuit board, a bottom shell, a waterproof glue applied to a fire preventing LED display, is also an important part of the LED display. The mask and bottom shell are PC glass fiber materials that are applied through quality and flame retardant functions. The board is a three anti-painted paint sprayed black, which has a role of anti-aging, anti-corrosion. 2, solve heat dissipation problems The larger the area of the LED display, the greater the amount of power applied, and it is more apparent. Plus summer sunlight, resulting in rising external temperatures, not good to heat dissipation. In order to process heat dissipation problems, it is necessary to adjust from the outer design and internal structure of the LED display, and the hollow design is used to use high-density high-precision design circuit boards. Take a macro air design internally, there will be no rain, and there will be no danger of wire short circuit. Install the cooling fan internally, reduce the LED circuit load, and combine the effect of efficient heat dissipation internally. 3, installation specification The LED display is used as a high power appliance, which is prone to short-circuit phenomena. However, high-quality LED display does not show short-circuit from the wire to the structure. But during the installation process, because of the careless and negligence, it can be an unexpected danger. Therefore, in order to ensure safety, the manufacturer needs to guide the installation to ensure proper connection of the positive and negative poles, and ensure that the circuit connection is firm, but also clean up the flammable object around the LED display. And arrange professional technicians to regularly check the LED display.

What effect does high temperature operation have on the led display? With the increasing use of LED display screens today, in order to maximize the advantages of the display screen, users should have a certain understanding of the maintenance of the LED display screen. Whether it is an indoor LED display or an outdoor LED display, heat will be generated during operation, and the generated heat will cause the temperature of the LED display to rise. However, do you know what effect does high temperature operation have on the LED display? Let's talk about Shenzhen LED display manufacturer Kindwin Optoelectronics. Under normal circumstances, indoor LED displays generate less heat due to low brightness and can dissipate naturally. However, the outdoor LED display screen generates a lot of heat due to its high brightness, which needs to be dissipated by an air conditioner or an axial fan. Since the LED display is an electronic product, an increase in temperature will affect the light attenuation of the LED display lamp beads, which will reduce the working efficiency of the driver IC and shorten the service life of the LED display. 1. LED display open circuit failure: the working temperature of the LED display exceeds the load temperature of the chip, which will quickly reduce the luminous efficiency of the LED electronic screen, cause obvious light attenuation and cause damage; the LED display is mainly made of transparent epoxy resin . For packaging, if the junction temperature exceeds the solid phase transition temperature (usually 125°C), the packaging material will turn into rubber and the coefficient of thermal expansion will rise sharply, resulting in open circuit failure of the LED display. Excessive temperature will affect the light decay of the LED display. The life of the LED display is reflected by its light attenuation, that is, the brightness will become lower and lower with the passage of time until it goes out. High temperature is the main cause of the light attenuation of the LED display, and it will shorten the life of the LED display. The light attenuation of different brands of LED displays is different, usually Shenzhen LED display manufacturers will give a set of standard light attenuation curves. The attenuation of the luminous flux of the LED electronic screen caused by the high temperature is irreversible. The luminous flux before the irreversible light attenuation of the LED display is called the "initial luminous flux" of the LED electronic screen. 2. The temperature rise will reduce the luminous efficiency of the LED display: the temperature rises, the concentration of electrons and holes increases, the band gap decreases, and the electron mobility decreases; the temperature rises, the electrons in the potential well will reduce the holes The possibility of radiation recombination leads to non-radiative recombination (heating), thereby reducing the internal quantum efficiency of the LED display; increased temperature causes the blue peak of the chip to move to the long wave direction, causing the emission wavelength of the chip to mix with the phosphor. The mismatch of the excitation wavelength will also cause the external light extraction efficiency of the white LED display to decrease. Screen: As the temperature rises, the quantum efficiency of the phosphor decreases, the amount of light emitted decreases, and the external light extraction efficiency of the LED display decreases. The performance of silica gel is more affected by ambient temperature. As the temperature increases, the thermal stress inside the silica gel increases, causing the refractive index of the silica gel to decrease, thereby affecting the light efficiency of the LED display.

Today, outdoor LED displays occupy a dominant position in the advertising field. According to the different needs of each project, such as the pixels, resolution, price, playback content, display life, and front or rear maintenance options, there will be different trade-offs. Of course, the load-bearing capacity of the installation site, the brightness around the installation site, the viewing distance and viewing angle of the audience, the weather conditions of the installation site, whether it is rainproof, whether it is ventilated or not, etc. must also be considered. So how to purchase LED displays? 1. The need to display content. The ratio of length to width is determined according to the actual content of the picture. The video screen is generally 4:3 or the nearest 4:3, and the ideal ratio is 16:9. 2. Confirmation of visual distance and angle of view. In order to ensure long-distance visibility under strong light conditions, ultra-high-brightness light-emitting diodes must be selected. 3. The appearance and shape of the design can now be customized according to the design and shape of the building. For example, in the 2008 Olympic Games and the Spring Festival Gala, the LED display technology is applied to the extreme to achieve perfection visual effects. 4. It is necessary to pay attention to the fire safety of the installation site and the energy-saving standards of the project; of course, when choosing, brand factors, LED screen quality, product after-sales service and other aspects are important factors that need to be considered. The display screen is installed outdoors, often in the sun, rain, wind and sun, and the working environment is harsh. Electronic equipment getting wet or severely damp can cause short circuit or even fire, cause malfunction or even fire, and cause damage. Therefore, the requirement on the structure is to take into account the weather conditions and be able to protect against wind, rain, and lightning. 5. The requirements of the installation environment. Use industrial-grade integrated circuit chips with a working temperature between -40°C and 80°C to prevent the display from starting up when the temperature is too low in winter. Install ventilation equipment to cool down so that the internal temperature of the screen is between -10°C and 40°C. An axial fan is installed on the top of the back of the screen, which can discharge heat when the temperature is too high. 6. Cost control. The power consumption of the display is a factor that must be considered.

Outdoor LED advertising displays, as the darling of outdoor media in the new era, benefit from the rapid development of outdoor advertising, which is growing rapidly at a rate of more than 25% per year. With their vivid and true visual experience, large LED screens are made. Become an indispensable member of outdoor advertising carriers. Especially in the city's commercial center, where people are crowded, large outdoor LED screens can be seen everywhere. Due to the particularity of the environment, the performance and quality requirements of outdoor LED large screens are much higher than other conventional LED displays. Then, in order to meet the requirements of outdoor displays, how can outdoor large led screens be stable and the effect is good? Let's analyze and analyze for everyone below: 1. High-definition display effect As the main carrier of video advertising, outdoor LED display screens need to have high-definition display effects. This includes high resolution, high brightness, high contrast, etc. High resolution ensures that high-quality advertising pictures can be presented well; high brightness ensures that the picture can be clearly displayed under direct sunlight; high contrast is the color of the picture. Strong guarantee of uniformity and fine image. 2. Low energy consumption Energy saving and emission reduction Outdoor LED display screens must be called by the government, and energy conservation and emission reduction must be implemented as an important standard in manufacturing, including product power consumption, product scattering performance, and the amount of steel required for product installation. 3. Large viewing angle and wide viewing area The main task of outdoor led display is to do advertising and image publicity. Therefore, letting more audiences see the screen is the primary goal of outdoor led display. It adopts a large viewing angle design to cover the viewing angle to the largest extent. 4. High protection level Because it is used outdoors, the weather environment must be taken into consideration. Outdoor large LED screens generally have to reach IP68 protection level to be able to fully adapt to all kinds of bad weather and ensure that the large outdoor LED screens have strong weather resistance and can be used for a long time. To ensure that the customer's profit reaches the maximum. A good outdoor LED display must have the above four elements at the same time. In addition to the outdoor advertising display solution, the product advantage relies on not only high-definition display, low energy consumption, and controllable viewing angle. , IP68 protection level and other characteristics, it is also required to have an aesthetic design that is high in transparency and does not affect the appearance of the building before it can be unique in outdoor advertising media display.

LED display screens can be said to be a very common display product in our lives. From outdoor advertising screens to conference video display terminals, LED displays have penetrated into all aspects of our lives. Looking back at the development of the LED display industry, it is not difficult to find that the LED display industry has poured into a lot of fresh blood, such as the rapid development of small-pitch LEDs, the "ice screen" in the "Beijing 8 minutes" of the Winter Olympics, and floor tiles. The rapid development of LED display has injected new vitality into the industry. The LED display has been developed in three dimensions on the sky, floor tiles, and stage walls. In 2018, in addition to continuous exploration on the road of technological innovation, the LED display industry is also facing a greater challenge, that is, intelligence. With the continuous development of the entire industry chain of science and technology, product intelligence has become the most important "topic" for all industries, and LED displays are no exception. In the future, if you want to achieve industrial upgrading, intelligence will become the key and the only way to the development of LED displays. In fact, the process of turning on the intelligence of LED displays has not been formed recently, but judging from the use of most LED displays in the market at present, real intelligence has not been realized, and many LED displays are still at a relatively low level. At the application level, such as LED advertising screens often seen outdoors, although it occupies an absolute advantage in waterproof, high-definition, and large-screen display levels, it has not yet involved the level of intelligence. LED outdoor advertising screens are still at the primary application level. But since intelligence will eventually become an important juncture on the road of development, we must not predict the development trend of the LED display industry in intelligence. Of course, it is not an unreliable guess to be able to capture these "signs". It combines the application scenarios of LED displays and the dawn seen in major industry exhibitions. When it comes to product intelligence, the most common one is "human-computer interaction". The goal of intelligent applications of products is mostly to liberate human beings. Therefore, as the name suggests, "human-computer interaction" has become an inevitable trend in the development of intelligent LED display screens. In the future, the intelligent LED display will get rid of the setting of "cold display terminal", but will be an intelligent display carrier integrated with high-tech technologies such as voice recognition, 3D, and VR. "The intelligent display carrier with temperature" has become the development goal. In order to enhance and optimize the user experience, the LED display screen needs to be strengthened on the basis of the realization of "human-computer interaction". At this time, big data analysis and data management platform comes in handy, using these data analysis technologies to integrate user preferences and realize intelligent control, precise push and other intelligent functions, so that users can put their emotions into it when using the LED display. While realizing product intelligence, LED display products will also return to the application market. After all, any product that is separated from the application level can only be called a display product. As the LED display industry is welcoming a new year, the application fields will be more subdivided and diversified, and different types of LED displays will also shine in different application fields. The concept of intelligence has spread to every corner of our lives. From drones to unmanned supermarkets to driverless cars, intelligence will become more and more popular, and in the field of LED displays, the development of intelligent products is also becoming the general trend, and the application fields of LED display products will be more diversified in the future. For example, in the market of intelligent monitoring, transportation, advertising, etc., LED display products will be indispensable. However, becoming intelligent of LED display products should not only focus on the upper level of technology. From the long-term development point of view, the development of production capacity is inseparable from the actual needs of users. Therefore, the LED display industry is not only on the basis of meeting technical needs, but also pay close attention to the user experience. In the future, the demand for intelligent LED display with "satisfying user experience" as the core will become an important guide for the transformation and upgrading of the entire industry.

Stadium LED display screens mainly display live events, match time, scoring, sponsor advertisements, etc., and are generally distributed inside and outside the stadium. It can make the audience feel a very shocking effect, with a different visual experience and enjoyment. There are many international and domestic sports events, such as the NBA, the Olympic Games, the European Cup, etc., and the LED display screen is almost like a shadow of the stadium. The large LED screen display system has replaced the traditional lights and CRT display screens and has become one of the necessary facilities for modern sports venues. Today we come to understand what specific requirements are required for the stadium LED display. 1. The safety and stability of the stadium led screen should be high In public places, safety is paramount, and there are many people watching sports games and large-scale events. Any failure or mistake will have a great impact, so stable engineering quality is the objective requirement of users. For example, the use of optical fiber transmission will avoid signal attenuation and will not delay the live or rebroadcast picture. Some protective pads and other measures can also be used to prevent safety accidents. You can use dual power supplies. When one power supply fails, the other can be automatically connected without affecting the normal display of the large LED screen. 2. the stadium LED screen needs to support multiple input interfaces The large LED screen of the stadium can not only be broadcast live by cameras, but also broadcast TV and satellite TV programs, play VCD, DVD, LD and various self-made video signal programs, support PAL, NTSC and other formats, and display content can also be a computer. The various graphic and video information on the Internet also need to be able to connect to the referee system, timing and scoring system, and the LED screen can display the game time and score in real time. 3. The flame retardant level, protection level and heat dissipation performance of stadium LED electronic display screens are better, especially for outdoor sports events, which need to take into account the changeable climatic environment. For example, southern country focuses on anti-tide, high-altitude areas are anti-cold, while desert areas need to consider heat dissipation. 4. The large LED screen in the stadium requires a wider viewing angle and a higher refresh rate to ensure the clarity of the video display. Especially when introducing player information, scores, slow-motion replays, highlights, slow-motion replays, close-ups and other live broadcasts, it is necessary to consider whether the audience can see clearly. 5. the stadium full-color LED display should select the corresponding dot pitch according to the viewing distance, such as outdoor large stadiums, generally choose the larger dot pitch display. P6 and P8 are two common dot pitches in outdoor stadiums. For indoor viewers, the viewing density is higher and the viewing distance is closer, so P4 and P5 are more appropriate for the dot pitch.

In the current urban business circle, the collision point between the large outdoor LED display and the symbiosis of the city seems to be the answer to the naked eye 3D and creative display. The "3788 Asian Light" outdoor large screen on Guanyin Street in Chongqing has become one of the landmark representatives of the urban landscape. It staged a shocking naked-eye 3D show of the future city earlier, and this show has been screened on the short video platform of Moments of Friends. According to statistics, the data spread of the naked-eye 3D project on the whole network exceeded 100 million, and the official media CCTV and Weibo big V have all reported on it. Immediately after this giant screen, a classic scene of "light rail crossing buildings" was reproduced, and the scenes most familiar to Chongqing people were used for creative design, reflecting the unique characteristics of Chongqing. Nowadays, the cool naked-eye 3D big screen can become a new landmark of the local city and rebuild a new image of the city. Under the combination of creative video and LED outdoor large screen, according to the unique cultural characteristics of the city and the combination of naked-eye 3D, to create a unique scene, scene of its urban characteristics, just like Chongqing's "light rail passing through the building" Like this 3D show, it combines the characteristics of its own city to create the city's "IP" and create a new city identity. From the perspective of building new landmarks and culture in the city, Chen Xiaoji, a master of architecture from Tsinghua University, also pointed out in the article "Urban Big Screen: Reshaping Urban Public Space" that the big city screen represented by Times Square in New York can express and Guide the visual cultural orientation of the city, integrate its cultural orientation into the urban landscape, form part of a new cultural tradition, and highly recognizable urban characteristics. This shows that the large outdoor LED display can recreate a new urban cultural style and characteristics in the new era, give the city a new cultural sense and emotional tone, give the city a new look and feel, and create a new urban style. Such as the current cyberpunk urban style, this style has also led the trend of architectural decoration styles for a while, and the most significant visual signs in the cyberpunk style are neon lights and gorgeous huge display screens. Nowadays, the huge screens suspended by skyscrapers in the game "Cyberpunk 2077" and the movie "Blade Runner 2049" have also come into reality, and gorgeous neon lights are also shining in the city. This kind of trend style is just like the above-mentioned literature. The current outdoor LED display screen is not only used for advertising, but also can be combined with creative videos and naked-eye 3D to recreate new urban landscapes in the ingenious urban design. The city`s new cultural identity helps to spread the city`s image. [The future of the city will evolve into a [screen world", L. Wallace scholar predicted in an article in 2003 that he believed that people`s future life would be surrounded by screens, forming a media space, and people would pass The screen and other media interact with the world. Just like the scene in the movie "Blade Runner 2049", the space in which it is located is full of huge neon lights and LED screens. The colorful world creates the style of cyberpunk, and the LED display The screen plays an indispensable role in this world. The combination of naked-eye 3D technology and creative display can make the LED outdoor advertising screen rejuvenate and become a creative art. The government's control and planning are actually to make it better development. Both the government and outdoor advertising companies should discuss the integration of urban and modern landscape aesthetics. As the carrier of outdoor advertising display, LED display screens are also responsible for spreading the city. The responsibility of culture is to integrate the cultural elements of the city into it, create urban IP, and let the LED display become a part of the city's logo. Under the trend of naked-eye 3D, the LED display industry combines with the cultural characteristics of the city and will usher in a new round of spring breeze. And with the acceleration of urbanization, the demand for urban beautification and lighting has also expanded, which has become a broad market, and the decline of outdoor display large screens will also usher in the rise.

1. gray scale The gray level refers to the brightness level from the darkest to the brightest in the brightness of the single primary color of the LED display. The higher the gray level of the LED display, the richer the color and color; on the contrary, the lower the gray level , indicating that the color is relatively single. Increasing the gray level can increase the color depth to a large extent and better present the color of the image. The gray scale of LED display is 14bit~16bit. With the advancement of technology, LED gray scale will continue to develop towards higher control accuracy. 2. the improvement of contrast One of the key factors affecting the visual effect of LED displays is contrast. Generally speaking, the higher the contrast, the clearer the image and the richer the color. High contrast has an important influence on image clarity, detail performance, and gray level performance. The advantages of high-contrast LED displays are reflected in the black and white contrast, clarity, and integrity. And the contrast will have a greater impact on the dynamic video display effect, because the light-dark transition in the dynamic image will be faster, so the higher the contrast, the easier it is for human eyes to distinguish the conversion process. There are two main ways to improve the contrast of the display: 2.1. Improve the brightness of the LED display. The contrast can be improved by increasing the brightness of the LED display. But pay attention to some occasions, such as indoor LED display brightness is not as high as possible, because the brightness is too high, it will form light pollution, it will cause damage to everyone's eyesight. 2.2. Reduce the reflectivity of the LED display surface. Reducing the reflectivity of the LED panel can improve the contrast of the LED display, mainly through special processing of the LED panel and the LED light-emitting tube.

The aging test of the LED display screen is a very important step in the production process of the LED display screen. It is also a critical test procedure in the production of the LED display screen. The test is an important guarantee for the product quality of the LED electronic display screen. The performance of the LED display is improved after aging, which is conducive to maintaining a stable state of performance in later use. The LED aging test is a measure applied according to the product's failure rate curve, that is, according to the characteristics of the bathtub curve, so as to improve the reliability of the product. The aging test of the LED display can be divided into 4h white light aging and 48h video aging. The aging method is divided into constant current aging and constant voltage aging. Constant current source means that the current remains constant at any time. Constant current aging is in line with the working characteristics of LED current and is a scientific LED aging method. Manufacturers also use over-current impact aging, which can be adjusted after the frequency of use, can estimate the quality and life of the LED in a short time, and can also find out many hidden dangers that cannot be identified by conventional aging. The following content is the need to pay attention to when the LED display is undergoing aging test: 1. Test content: white screen, red, green, blue monochrome, gray gradient, video effect, text effect; 2. The white screen test time is not less than 24H; 3. Monochrome and grayscale gradient test shall not be less than 24h; 4. The video and text effect test shall not be less than 24h; 5. The aging test of the led display must be guarded, and when a problem occurs, it can be reported and dealt with immediately.

The aging test of the LED display screen is a very important step in the production process of the LED display screen. It is also a critical test procedure in the production of the LED display screen. The test is an important guarantee for the product quality of the LED electronic display screen. The performance of the LED display is improved after aging, which is conducive to maintaining a stable state of performance in later use. The LED aging test is a measure applied according to the product's failure rate curve, that is, according to the characteristics of the bathtub curve, so as to improve the reliability of the product. The aging test of the LED display can be divided into 4h white light aging and 48h video aging. The aging method is divided into constant current aging and constant voltage aging. Constant current source means that the current remains constant at any time. Constant current aging is in line with the working characteristics of LED current and is a scientific LED aging method. Manufacturers also use over-current impact aging, which can be adjusted after the frequency of use, can estimate the quality and life of the LED in a short time, and can also find out many hidden dangers that cannot be identified by conventional aging. The following content is the need to pay attention to when the LED display is undergoing aging test: 1. Test content: white screen, red, green, blue monochrome, gray gradient, video effect, text effect; 2. The white screen test time is not less than 24H; 3. Monochrome and grayscale gradient test shall not be less than 24h; 4. The video and text effect test shall not be less than 24h; 5. The aging test of the led display must be guarded, and when a problem occurs, it can be reported and dealt with immediately.

With the development of society and the improvement of people`s demand levels, LED grid displays have gradually appeared in the public`s field of vision and have been recognized. From the LED grid display with dual primary colors of red and green to the later full-color display, from only the traditional display screen professional engineering business has participated in the project and many companies can participate in the project. The development of LED grid display has formed a certain industrial scale and form. With the popularization and promotion of the internet, LED grid display screens are in the whole in the process of informatization, the application space is also expanding, showing a good development trend. Outdoor LED grid display is also called outdoor transparent display. As a category of LED display, it has the characteristics of high brightness, large viewing angle, rainproof, waterproof and windproof functions, and is widely used in shopping malls, airports, and hospitals. , Schools and other places, with media display, information release, traffic signal, creative display and other purposes. Choice of outdoor grille display 1. Basic parameter selection The colors of outdoor grille display screens are mainly divided into three types, namely, dual-primary color, single-primary color and full-color. Among them, the single-primary color display is mainly used to display text, and the dual-primary color display is mainly used to display graphics and text. Its pixel points are composed of red and green LED tubes, and can display three colors: red, green, and yellow. The last full-color display refers to not only displaying images and texts, but also displaying video. Each pixel is composed of three LED tubes: red, green, and blue, and has richer display colors. At the same time, making the display screen more delicate. In addition to the choice of color, the dot pitch, the brightness of the screen, and energy consumption must also be selected in consideration of the distance between the screen and the viewer. 2. Selection of constituent materials (1) Lamp beads. The lamp beads can directly affect a series of problems such as the viewing angle, brightness, failure rate, antistatic ability, life attenuation characteristics and energy consumption of the grid screen. The viewing angle of the grid display screen depends on the viewing angle of the LED lamp beads, and the taller grid screen has a higher vertical view. The greater the viewing angle, the smaller the brightness, the higher the brightness of the LED lamp beads, the greater the current margin, the more power-saving and stable the grid screen, which is the opposite of the viewing angle, so for grids with different dot pitches The screen needs to find a corresponding balance in brightness and viewing angle. The failure caused by the LED lamp beads will cause the overall visual effect of the grid screen. Choosing a good and suitable lamp bead has a great impact on the life of the entire screen and the attenuation phenomenon, antistatic ability, and screen size that will occur later. influences. (2) Power supply. Since it is an outdoor display, when choosing a power supply, consider the influence of outdoor weather on the display screen and the relevant circuit conditions on the scene. When choosing the power supply of the grid screen, you should use a switching power supply as much as possible, and confirm that the power supply is waterproof and sun-proof. , To ensure the safety and stability of the entire screen after lighting. Due to the nature of the grid screen product, an instantaneous current is usually generated when playing a video or picture, which places stricter requirements on the LED power supply. Generally, in order to ensure the normal broadcast of the display screen, it is necessary to reserve a certain margin for the power supply product. Generally speaking, the more the margin is reserved, the more stable the performance of the power product and the longer the lifespan. However, this will increase the cost of the power product, and too much margin is likely to cause waste. At present, the grid screen power supply in the industry generally reserves a margin of 20%-30%. In order to increase the life of the power supply, it is recommended to choose a model with a 30% more output power rating. For example, if the system requires a 100W power supply, it is recommended to select a model with an output power rating of greater than 130W, and so on can effectively increase the life of the power supply. Outdoor grille screen installation The installation of outdoor grille screens must be combined with actual places and requirements to ensure the rationality and safety of the project installation process. Select a highly stable steel structure to ensure that the entire steel structure is in place for waterproof and lightning protection and related performance. The entire process must be carried out in strict accordance with the pre-prepared construction drawings. On the other hand, before installation, it is necessary to investigate the electricity consumption in the vicinity and the surrounding area in advance, regulate the electricity consumption standards and equip the relevant leakage protection system. During the installation, waterproof, moisture-proof, lightning protection and ventilation and heat dissipation work must be done in the entire display screen. Install drainage facilities, install corresponding ventilation and heat dissipation equipment. For the lightning protection grounding equipment of the grille screen, it is necessary to select the appropriate grounding form in accordance with the actual environmental conditions: if the grille screen exists independently, then it needs to be independent Grounding system, and ensure other certain range, and if the display screen is attached to the outer wall of the building, it is required that the main body of the display screen and the shell be in contact with the building and connected to the building`s public integrated grounding system. The application of outdoor grille screens is mainly in media promotion. With the improvement of technology and the continuous enrichment of outdoor grille screen applications, the selection and installation of outdoor grille screens are particularly important. Choose a suitable and high-quality grille display The screen is the prerequisite to ensure the development of the industry and eliminate the waste of resources. The implementation of related installation work and standard installation process is to ensure the installation quality, avoid the safety problems and accidents that occur during the installation and subsequent use of the outdoor grille display screen, and significantly improve the outdoor the basic performance and function of the display screen.