カテゴリーアーカイブ: ビジネスニュース

The main problems of outdoor full-color LED display are as follows: the outdoor temperature changes greatly, and a certain amount of heat will be generated when the display screen works normally. If the heat dissipation effect is poor in high temperature weather, the integrated circuit will work abnormally, or even be burned, which will affect the reuse of the display system;

(2) outdoor LED display will be affected by the brightness of the sun, so there are some requirements for the brightness of the display screen.

(3) the installation environment of outdoor LED display screen is generally large, because the display screen faces a wide audience and the viewing distance must be appropriate. If it is too far or too close, it will affect the viewing effect and cause visual discomfort to the audience;

If the full-color LED display screen is installed outdoors, its adaptability to the environment is much higher than that of the indoor screen. Outdoor environment, weather changes, the display screen often exposed to the wind, sun and rain, the working environment is relatively bad. Once the electronic equipment in the display screen is wet or exposed to high temperature, it will cause short circuit of the circuit in light, or cause fire, causing economic losses and casualties;

In summer, the display screen will be affected by electromagnetic impact caused by lightning, so lightning protection measures must be appropriate;

According to the above special requirements, outdoor full-color display screen must meet the following requirements:

(1) engineers need to calculate the appropriate spacing of full-color LED display screen according to the use environment and viewing distance, so as to achieve the best display effect;

&In order to ensure the long-distance viewing under strong ambient light, ultra-high brightness LED should be used;

(3) installing lightning protection devices on existing buildings with full-color LED displays. The main body and box shall be well grounded, and the grounding resistance shall be less than 3?, so that the current generated by lightning can be released in time;

(4) in the selection of chips, the industrial and integrated circuit chips with working temperature between – 40 ℃ and 80 ℃ should be selected to prevent the display screen from normal use in areas with low ambient temperature;

(5) the cabinet should be equipped with ventilation and heat dissipation equipment to keep the screen temperature controlled between – 10 ℃ and 40 ℃;

(6) the interior of the full-color LED display screen, as well as the packaging and installation of the screen, must strictly reach the waterproof and leakage proof level. Secondly, the installed large screen should have a smooth drainage channel to avoid ponding, water seepage and damaging the display effect.

P1.875 ultra high definition small spacing LED display screen studio auditorium energy saving electronic advertising large screen customization, p1.875 small spacing high-definition LED display screen adopts national star gold wire smd1010 lamp beads, high brush PWM drive IC, Mingwei power supply, novaling star rain control card, module size 240 * 240んん, die casting aluminum box size 480 * 480んん, unit box resolution 256 * 256 points, only weight 4kg, 160 degrees large viewing angle, 3840hz refresh Rate, maintenance before magnetic suction does not need to leave a maintenance channel, system power signal double backup, high contrast, strong color restoration, low brightness and high gray performance: in the case of low brightness, the display gray is uniform and the display consistency is good.

3.91 indoor high-definition LED floor tile screen Museum exhibition floor panel treading track electronic advertising display screen, p3.91 indoor high-definition LED floor tile screen adopts smd2020 lamp beads, module size 250 * 250んん, die-casting aluminum box size 500 * 500 / 500 * 1000んん, unit box resolution 128 * 128 / 128 * 256 points, 3840hz refresh rate, 14bit gray level, acrylic or tempered glass is placed on the box, which can bear 1.5T The surface is wear-resistant, high light transmittance, protection grade IP65, modular installation, fixed installation or mobile guide installation, easy to install, fast and easy to maintain.

P3 indoor LED display screen adopts smd2020 lamp beads, module size 192 * 192んん, die casting aluminum box size 576 * 576んん, unit box resolution 192 * 192 points, refresh rate greater than 1920hz, the whole screen flatness is less than 0.3mm, horizontal and vertical viewing angle is 120 度, gray level is 14bit, strong color restoration, high contrast, high-definition video playback, fine quality, when the screen area is small, it can be maintained before magnetic suction The module is directly spliced. When the screen area is large, the box is used for splicing. The warranty is two years and the maintenance is lifelong.

P2.5 indoor HD full color LED display screen customization of rolling electronic screen in hospital shopping malls and schools

Full color LED display screen P3 indoor HD Hotel stage electronic advertising screen

P2.5 high definition indoor full color LED display panel embedded electronic unit board in the background wall of conference room;

P4 indoor full color display rental HD LED large screen LED electric advertising display screen

P4 indoor full color LED screen stage rental large screen electronic advertising screen

Indoor P3 full color LED display screen inlaid electronic advertisement propaganda screen

High definition interactive induction LED floor tile screen stage floor LED floor display

Ground LED display screen interactive induction floor tile screen t LED floor panel;

P8 outdoor LED sky screen is a large electronic display screen of Huahai starry sky in the corridor above the pedestrian mall square. The P8 outdoor LED sky screen adopts smd3535 lamp beads with module size of 256 * 128mm and waterproof box of 768 * 768んん. The sky screen is equipped with three-dimensional audio-visual sound reinforcement system to achieve the synchronization of image and sound. The large-scale led ceiling screen suspended on the ceiling is like a bright and deep sky with colorful silk and bright sky. Combined with new LED light strips, light belts, spotlights and other lighting equipment, it plays a role of lighting and rendering, with a two-year warranty and lifelong maintenance.

1. High quality components and fine processing technology are adopted to effectively reduce the dead light rate.

2. Double backup system of power supply and signal ensures the stable operation of the product for 7 * 24 時間, which is the safest and most reliable.

3. Under low brightness, the gray performance of the display screen is almost perfect, and its display image level and brightness are higher than the traditional display screen.

4. High pixel density display unit with micro pixel spacing can be spliced wirelessly and can support 2K, 4K and ultra-high resolution display.

5. Even if it is reduced to 500-300cd / 平方メートル, it can still ensure the realization of high gray level.

6. The black fog lamp and corrugated light absorbing mask are used to reduce the reflection in the bright light environment, and the picture is still clear and visible.

7. Automatically adapt to the photosensitive adjustment equipment, and will not affect the display screen due to the environment.

8. The screen is stable, no ripple, no black screen, the video picture is delicate and smooth, and the dynamic display picture has clear image edge. It has good dynamic expression, and can restore the image information accurately and bring the greatest visual enjoyment.

With the continuous development of market economy, more and more manufacturers of full-color LED electronic display screen will be selected. The product type of full-color LED display is dazzling, and the quality problems of all kinds of full-color LED electronic display screen are coming one after another. したがって, when choosing the electronic screen, users must consider the comprehensive strength, product quality and after-sales service of full-color LED screen manufacturers. Avoid future impact issues.

So what are the reasons for these factors? LEDディスプレイ工場 summed up a few points here..

初めに, the price of full-color LED is usually a reason that most users pay more attention to, especially in China, because everyone wants to buy products with good quality and low price, because the cheaper the price, the more happy the customers will be. But the problem is, the lower the price, the better the quality? There’s a big question mark. As the saying goes, wool comes from sheep. It is difficult to imagine the material, technology and after-sales service quality of cheap full-color LED electronic screen products. There is nothing wrong with saying that there is no good product at low price.

The second step is to select the manufacturer of full color LED electronic screen in terms of technology, not only the price, but also whether the manufacturer has exclusive technology. Is the project implementation experience mature? Are there many successful cases. 一般的に言えば, it is not a full-color LED electronic screen produced by a professional company. The quality of its products can not be ignored. General technology advanced full color LED display manufacturers will reduce many problems in the project implementation and after-sales process, to avoid wasting time and money.

The third step is after-sales service. We all know that any product can’t be used for a long time. It can’t always be good. Many people don’t know that the full-color LED electronic screen has a long service life, and the normal theoretical service life is 100000 時間. しかし, after long-term use, there will be some failures, including some skills. しかし, technical problems also need professional maintenance, so after-sales service is very important.

&Fourth, regional reasons when choosing manufacturers of full-color LED electronic screens, I believe most users prefer manufacturers in that region. Why? Because the manufacturers of full-color LED electronic screen are close to each other, the communication is more convenient, and the follow-up maintenance is also faster. They can teach you how to do it by hand. .

したがって, the LED display factory suggests that we should consider all factors when choosing the manufacturer of full-color LED electronic display screen, taking into account the above four points or even more, because everyone does not want to spend money to buy products they do not like. Here we also wish you can buy the satisfactory products you need.

Led transparent display screen sales in full swing, and led transparent screen manufacturers from a few years to now everywhere.

How to judge the quality of LED transparent screen? Some people say that the quality of LED transparent display can be roughly judged by the appearance. is that true?

最近では, transparent LED panels produced by many manufacturers are similar in appearance and structure. The principle is the same, circuit boards, beads, wires, 等.

How can we find a good transparent LED display with our eyes?

Here is a brief introduction:

Brightness comparison

Stick the acrylic board on the same number of modules, and then slowly lift a small distance to see whether the brightness of the beads can meet their own requirements. もちろん, it’s more direct to put modules directly in words. The higher the brightness, the higher the requirements for the lamp beads, the higher the cost requirements. Pure indoor environment can adopt low brightness, but if it is window led transparent screen or LED glass curtain wall screen, high brightness LED transparent screen is required.

Is the light uniform

When observing the brightness, we should pay attention to the uniformity of the beads. When looking at white light, be sure to pay attention to whether there is color difference (this is very important) – if you cover it with thin white paper, you may not see it, so you need to use a certain thickness of acrylic acid. Colorimetric aberration is an important part of quality identification and one of the main reasons for the price difference of LED transparent screen

Wire identification

High quality wire, through UL certification, these through the LED transparent screen manufacturer’s manual is unreliable, so the most direct way is to pull out the skin, count the number of cores inside! For modules with 15, 17, 19 core wires or even 20 core wires and 30 core wires, the module will not be worse than that of 14 そして 11 core wires, and vice versa.

Bulb temperature

After lighting for a period of time, touch the LED bead with your hand. The temperature is very high and certainly not as stable as the low temperature.

Solder joint quality

The full solder joints prove that the welding process is good, and the high brightness proves that the soldering tin is used well; the serious problem is the false soldering, which is easy to cause poor contact, and the follow-up maintenance is troublesome.

Led transparent screen light pasting mode

現在のところ, there are two ways to make transparent LED screen, one is positive light, the other is side light. Although the permeability of side light is relatively high, the lamp bead packaging technology needs to be tested in the market, and the lamp bead with positive light emission is the lamp bead of traditional LED display screen, and the quality is stable after market inspection.

After years of development, the technology of LED transparent display has been very mature, and the commercial application environment of LED transparent display has become more and more extensive.

The reason why the LED transparent display screen develops so well is that the transparent LED screen is grid like and has certain transparency. When the conventional display screen is not bright, it is a big black screen, which greatly affects the beauty of the city. When the LED transparent display screen is not on, it is a white light strip, just like the shutter, because it has its own permeability, the light bar is also white, and it will not affect the overall aesthetic degree.

In recent years, the commercial application environment of LED transparent display screen is more and more extensive. Let’s introduce some common business environment of LED transparent display screen factory.

Background application of LED transparent display screen:

The transparent LED display screen can be built according to the stage shape diversification. It can produce a strong perspective effect by using the transparent and thin characteristics of the LED screen, so that the depth of field of the whole picture will be lengthened. 同時に, it will not hinder the space left by the stage design for lighting hanging and playing, which can render a certain atmosphere and dynamic to the stage, and can express the theme more

Led transparent display glass window application:

With the rapid expansion of digital signage industry represented by retail, led transparent screen brings revolutionary changes to retailers, and is increasingly popular in building facade, glass window decoration, interior decoration and other fields

Led transparent display screen chain store application:

The unique design method makes the transparent LED display screen replace the traditional LED display screen on the exterior wall of the store. The more vivid video advertisement makes the store cool and attractive

Application of LED transparent display in science and Technology Museum:

Science and Technology Museum is an important scene to spread scientific knowledge. Led transparent display can be customized. As a high-tech effect display, people can perceive the magic and mystery of science and technology through the LED transparent screen

Application of LED transparent display in exhibition hall:

The modern artistic beauty of transparent LED display screen is perfectly combined with metal modeling. It has the characteristics of high permeability, high stability and long service life. After installation, it does not affect the original architectural style and lighting. The product shape has texture. It is the first choice for modern architectural advertising lighting. It has a wide application prospect in glass curtain wall, shopping mall and glass partition.

Led transparent display screen supermarket application:

The modern artistic beauty of LED transparent display screen is effectively combined with the environment of shopping malls

Building media application of LED transparent display screen:

With the development of LED technology, building media technology has also made great progress, especially in the application of glass curtain wall buildings, in recent years, gradually hot, there are led light strip screen, transparent led sky screen and other solutions

What are the advantages of transparent LED display

(1) the anti-collision performance of the lamp bead is strong

(2) the glass curtain wall has a high penetration rate of 70% – 95%, which ensures the original daylighting and perspective function of glass curtain wall

The thickness of the main board is only 10 んん, and the general weight of the display screen is only 15 kg / 平方メートル. It does not need to change the building structure and is directly fixed on the glass curtain wall

4) without steel frame structure, it can save a lot of installation and maintenance costs. It is directly fixed on the glass curtain wall without any steel frame structure, which saves a lot of cost

The curtain wall has a unique effect on the curtain wall, because it can show the effect of the curtain wall

The maintenance is convenient and fast, indoor maintenance is fast and safe, and saves manpower and material resources

Energy saving and environmental protection do not need traditional refrigeration system and air conditioning heat dissipation, which can save more than 30% than ordinary LED display screen

The common application environment of LED transparent display screen is basically here, and the introduction of LED transparent display screen is a little bit. If you need to know the price of LED transparent display screen, please consult the customer service of LED display factory.

LED display factory led transparent display screen, 深セン 12 years full color LED display screen manufacturer, need to install led transparent screen contact us, free on-site measurement, national door-to-door installation, two-year warranty, lifelong maintenance, welcome to consult!!!

現在のところ, compared with the core patents of DLP and LCD splicing in the hands of foreign brands, China is in a leading position in the field of small spacing LED display, and has mastered a complete set of technical solutions, which is also the application advantage of small spacing LED display in the whole country.

When it comes to military products, many people’s first impression is “high quality” そして “advanced technology”. In the public impression, military products have always been synonymous with “quality” そして “テクノロジー”. But in recent years, the state has transferred military equipment and personnel to civilian production areas. With the opening of non-public economy to the military market, the boundary between military products and civilian products is more and more blurred. The small space full-color LED display screen, which was born in the era of market economy, is more like a difference between the two markets. In addition to higher quality requirements for military products, there is one other aspect. In fact, the products of ordinary people are not very different.

China has a vast territory and complex terrain and climate. From the Qinghai Tibet Plateau to the hilly areas of South China, the vast area and great environmental differences also lead to the concentration of LED display quality requirements in different regions, such as the southern coastal areas. The requirements of salt resistance, alkali corrosion and humidity are high. In the Gobi desert area, heat dissipation is the main problem. したがって, how to meet the different emphasis on weatherability in different regions is the key issue for each enterprise to enter the military market.

Due to the particularity of military materials, the military procurement requirements for LED display screen are not sensitive to the price, but the requirements for quality and weather resistance are high. This also means that the threshold to enter the military LED display market will be far higher than that in the civilian field. The quality of “high standard and strict requirements” also means that not all relevant enterprises can occupy a place in the military market. Any enterprise that wants to occupy a place in the military market must vigorously enhance its comprehensive strength, product competitiveness and brand communication effectiveness. Otherwise, it will not only lose the huge potential market, but also lose its influence in the high-end application market.

With the continuous advancement of China’s military modernization, LED display screen is more and more widely used in military construction. Military training, military exercises, daily military training and command operations are playing an increasingly important role. 同時に, the construction of national defense informatization is also developing rapidly. The application market of small spacing LED display has added new positioning. Taking the command center as an example, as the “brain” of the army in wartime, the command center undertakes the important tasks of information concentration, processing and command. It requires a high degree of confidentiality of information. したがって, the electronic equipment used in the command center must be fully localized.

The reason why small space full-color LED display screen has been rapidly promoted in military engineering all over the world is that it has nothing to do with the high localization of related products, except for the physical properties such as wide brightness range, flexible application and seamless. Technology. The reason why small spacing LED display can be highly localized is also related to the military. Team use is indivisible. Reviewing the development of small spacing LED display, the earliest application scenario of small spacing LED display is in each command center. Due to the immature technology, the early small spacing LED display can not be put into production on a large scale. The price is as high as several hundred thousand yuan per square meter, which is difficult to accept in the civil market. It is precisely because the army’s demand for information security and quality is higher than the demand for price, which makes the small spacing LED display technology develop smoothly. Based on the military market, it will gradually improve and develop, and gradually extend to the civilian market.

For a long time, some LED display enterprises in China are satisfied with the price war and seize the market with low prices. したがって, the pursuit of entering the military market can change the long-term emphasis on low price, ignore product quality, broaden ideas and broaden vision. 一方で, it can also help enterprises build products. Brand influence and eliminating some inferior enterprises in the market selection will contribute to the healthy development of the industry. In the future, with the continuous improvement of military equipment localization, the application of LED display screen, especially small spacing LED display screen, will usher in a broader application space in the field of military products.

したがって, the regular maintenance of full-color LED display screen can not only make the LED display in the best running state, but also can effectively prevent the occurrence of faults, reaching twice the normal operation effect of LED display screen.

The maintenance methods of full-color LED display screen mainly include four aspects: inspection, cleaning, fastening, and surface cleaning of display screen.

私. inspection

の “monthly inspection system” is generally adopted for the inspection cycle of LED display screen. After the implementation of “weekly inspection system” for maintenance of large LED display screen, the “monthly inspection system of LED display screen” shall be reported weekly. Specific maintenance content and response speed commitment:

1. Special operation software for LED display, including maintenance and upgrade of playback software;

2. LED display control system maintenance, including controller, optical fiber conversion card, distributor, sending card;

3. LED display screen maintenance, including lamp tube, module, module, power supply and control card;

4. 通常 (once a month) technical personnel on-site inspection, inspection and maintenance of the system;

5. Guarantee of major activities: the company’s technical personnel shall guide and ensure the smooth development of on-site activities.

6. The outdoor full-color LED display screen is not covered by the warranty due to wind, 雨, thunder, electricity and other natural factors. The owner shall take out insurance from the insurance company, and the insurance company shall make compensation.

7. During the maintenance service period, the maintenance problems shall be solved within 8 hours for general faults and 24 hours for major accidents. Repair and replace the module and other accessories, the time shall not exceed 24 時間. After repair, ensure that the large screen does not appear module level or above faults (such as module color deviation, module black, a column is not bright, 等), and can play normally.

II. Cleaning up

For low-level protection, especially outdoor full-color LED display, dust enters the equipment through ventilation holes in the atmosphere, which will accelerate wear and even damage fans and other equipment. Dust also falls on the surface of the internal control device of the display screen, reducing the thermal conductivity and insulation. In wet weather, dust absorbs moisture from the air, causing a short circuit. Dust can also lead to long-term mildew of printed circuit boards and electronic components, resulting in technical performance degradation and equipment failure. したがって, the cleaning of LED display seems simple, but it is actually an important part of maintenance work.

3. Fastening

LED display is a high power consumption device. After running for a period of time, due to the start-up, shutdown and operation for many times, the terminals of the power supply part will be loose due to cold and hot, and the contact is not firm, forming a virtual connection, and even igniting the plastic parts nearby. The signal terminal will also loosen due to temperature change and humidity erosion, resulting in poor contact and equipment failure. したがって, it is necessary to tighten the connector of LED display regularly. When adjusting fasteners, the force should be uniform and appropriate to ensure its inherent effectiveness.

4. The surface of the display screen is clean

The appearance of LED display screen of Maipu brilliant shopping mall was inspected in two states of bright screen and black screen. It includes: whether the surface of the display screen is polluted, the purpose is to eliminate the influence of the surface dirt on the luminous characteristics; whether the display surface is damaged and cracked; whether the communication and distribution lines are normal; the equipment NT has a high level of protection, although high reliability components and connectors are selected, its sealing becomes the key factor. したがって, it is necessary to regularly check the integrity of the seal; to check the surface paint and rust of the steel structure of the outdoor panel; and to clean the surface of the outdoor panel, especially the polluted surface. Traditional LED display screen cleaning belongs to high-altitude operation, which requires professional cleaning team. The cleaning operation adopts high hanging rope (commonly known as spider man) or hanging blue. The double-sided monitor only needs to turn back the prism of the monitor, and the cleaning personnel can stand on the maintenance platform to clean. According to the different dirt on the screen, choose different cleaning agent to clean, to ensure that the LED lamp tube and mask will not be damaged when cleaning the LED display.

With the advent of the digital era, the uniqueness of outdoor LED display screen in audio-visual technology has begun to glow with different vitality.

1. High definition outdoor LED display. With the maturity and development of technology, small space indoor hope outdoor, which opens up high definition

The era of outdoor LED display. Especially with the increasing demand of end users for display effect, and the continuous development of 4K and 8K

Small space outdoor LED is becoming more and more popular in the market.

2. Intelligent outdoor LED display. With the integration of Internet technology and LED display screen, the outdoor LED display screen has basically realized the area

Domain and national networking. 同時に, the outdoor LED display can interact with social media such as microblog and wechat, as well as positioning, face recognition

3D, virtual reality and other innovative applications. Outdoor LED large screen media is developing towards networking, digitization and intelligent information platform

It also brings more market blue ocean and innovation development space for outdoor LED display industry.

三番目, outdoor LED display service upgrade. で 2019, with the rapid development of outdoor LED display screen, the competition among major manufacturers

Increasingly fierce. In addition to the competition in quality, brand and performance, improving service level has become the distance between screen enterprises

Important aspects. With the gradual maturity of the terminal market, who can seize the opportunity in the after-sales service market of LED display screen and establish a good market as soon as possible

Good word of mouth, who has the opportunity to lead a new round of market demand.

現在のところ, the acceleration of local cultural construction in cities around the world has also brought new vitality, especially innovation, to the outdoor LED display screen

例えば, the “standardization” of outdoor LED display needs to be raised as soon as possible

How to effectively solve the light pollution problem of outdoor display; how to enter. One step to ensure the quality of outdoor display engineering

Quantity, make outdoor LED display more safe and so on LED display enterprises need to constantly optimize themselves to promote the healthy development of outdoor LED display industry

同時に, the market of LED display screen in the first and second tier cities is becoming more and more saturated. With the acceleration of infrastructure construction in the third and fourth tier cities

The demand for outdoor LED displays in third and fourth tier cities will continue to increase. The so-called “adjusting measures to local conditions” requires different expansion in different markets

Z style. LED display enterprises should rely on the third and fourth tier cities. According to the specific needs of the market, the product planning, research and development

In order to better find their own way out in the declining market.

As an important media, outdoor LED display screen is still full of vitality in modern cities. According to the market demand, intelligent high-definition outdoor display screen will become a popular product, which can control the brightness freely at the same time. Looking forward to the future, we should keep pace with the times, increase investment in R & D and innovation, integrate the three swords into one, seek the balance point of the development of the times, ensure the healthy development of the enterprise itself, and promote the overall development of the enterprise.

At the beginning of this year, Magna and harmony jointly released the global outdoor media research report, which analyzed in detail the current situation of China’s outdoor advertising and the future development of its sub fields. The report also predicts that China’s outdoor advertising market will become the second largest market in the world in 2019, and the advertising revenue of digital outdoor media will continue to grow until 2023. As an important part of digital outdoor media advertising, outdoor LED display will also present a booming scene. しかし, due to the existence of many problems in the service life of outdoor LED display, the intelligent lamp pole screen which integrates monitoring and detection also has an impact. How to deal with the industry challenges has become the top priority of the outdoor LED display industry.

A series of unsolved problems pose a serious challenge to the LED display industry.

As an important outdoor communication carrier, 屋外 LED screen media advertising has been favored by advertisers, but it has a variety of security risks and interference, which makes people more worried. Due to various reasons, aging, spontaneous combustion, light pollution and a series of problems have not been effectively solved, which has brought a threat to the development of LED display industry.

In the daytime, the outdoor LED display needs higher brightness than other LED displays to attract the attention of passers-by. しかし, at present, there is no uniform standard for the brightness of the display screen in the industry, so the brightness cannot be adjusted. So brightness only happens during the day and becomes dazzling in the dark at night. The light pollution of outdoor LED display has caused people’s criticism. Although the state has promulgated laws and regulations on limiting light pollution, the legal system of outdoor LED display brightness has not been established. 加えて, complaints about the light pollution of outdoor LED display frequently interfere with people’s livelihood. There is still a long way to go to legalize the light pollution of outdoor LED display.

Everything in the world has a life span, and outdoor LED displays are no exception. The longer the service time is, the more obvious the side effects of parts aging. Outdoor LED displays have been used for a long time. The early products can not meet the needs of the market for visual display, nor can they adapt to urban development planning. 同時に, due to its fixity and difficulty in dismantling, it has developed into a huge psoriasis in modern cities, which seriously affects the urban landscape family and becomes the goal of urban reconstruction. Outdoor LED display screen has special installation position, changeable working environment, strict safety performance test, aging parts, circuit fault and catalytic spontaneous combustion. If the product quality is not up to standard, it will increase the risk of safety accidents. .

現在のところ, the outdoor LED display market is still expanding, and the market prospect is promising. しかし, under the influence of various factors, the approval process of outdoor LED display is becoming more and more complex, which effectively restricts the development momentum of outdoor LED display, and brings severe challenges to the industry.

The appearance of intelligent light pole screen impacts the traditional outdoor screen

The problem of light pollution has not been effectively solved, and the intelligent lamp post screen has a great impact on the industry. With the support of the smart city policy, China’s smart light poles are growing explosively. As a form of intelligent light pole, lamp post screen can not only play various forms of media content, but also realize real-time monitoring of road conditions and monitoring environment and real-time transmission of road conditions by connecting WiFi and Internet of things. Consider people’s livelihood and business value. 加えて, compared with the outdoor LED display screen, location resources are increasingly scarce. The residential lamp pole display screen is built on both sides of the road lamp pole, with prominent location, strong competitive advantage and high-quality location resources.

加えて, with the official landing of 5g business license, short distance equidistant light poles will be selected for 5g base station construction in the future, and the lamp pole screen on the lamp pole will also become the beneficiary of 5g network. 5g lamp pole screen is adopted to realize function interaction, big data acquisition, remote cluster control and other functions. Smart light pole screen changes with each passing day. The state has issued another preferential policy to promote the development of lamppost screen industry to maturity. Perhaps the fierce smart lamppost screen will have a greater impact on outdoor LED displays than other challenges.

With the deepening of people’s understanding of LED display, LED display has gradually entered hundreds of cities and become an indispensable part of urban landscape. There are more and more outdoor LED displays around the world, but the lack of unified control leads to the overall appearance confusion. したがって, how to beautify the outdoor LED display has become an urgent problem for local governments. From the perspective of world tourism, urban landscape has a great impact on the development of local tourism. As an independent individual, outdoor LED display can show its artistic charm in various forms and become one of the scenic spots of the city. したがって, in order to improve the quality of people’s life and the development of urban tourism, many governments have incorporated the outdoor LED display screen into the urban beautification deployment planning to realize the urban landscape and promote the development of outdoor LED display technology. And make its outdoor LED display industry become a new focus.

It is no exaggeration to say that the advantages and disadvantages of led video processor directly determine the display effect of full-color LED display. 今日, I’d like to take you to know more about this problem.

&Noise suppression

Due to the lattice characteristics of full-color LED display screen, the negligible noise in other flat panel display media will greatly challenge the psychological endurance of LED display screen audience. The noise mainly comes from the compression noise of video signal and the random noise of the system itself. Excellent video processor can greatly reduce the interference of noise on image quality by suppressing noise.

Motion compensation

Motion compensation for slow and fast images. Good motion compensation technology can reduce the jagged edge of moving image in full color LED display.

De interlacing

In order to reduce the bandwidth of video signal, interleaving technology must be used to improve the resolution. Full color screen needs preprocessing of interlaced scanning signal. The interlacing is well handled and the trace effect of live broadcast and shooting is eliminated.

Scalability

Full color screen is a flexible display product among all flat panel display media, which is usually used for modular design and mosaic display. But the disadvantage of this product is that it may not be as flexible, especially because the display resolution of each engineering application is difficult to find in the standard. したがって, video processors in particular need to provide scalability.

Image pixel reduction

The pixel resolution of general display screen engineering application is less than 1024 * 768). The video processor is required to reduce each signal to the resolution of the corresponding terminal, and the video processing equipment is required to have the function of pixel by pixel scaling.

Image pixel magnification

Because more and more engineering applications are developing rapidly, the full-color LED display screen is no longer limited to the traditional solutions and solutions. Some engineering applications even reach the level of 2048 points. In these applications, the image amplification processing technology of video processor is also needed, and the internal processing bandwidth of video processor can reach or exceed the dot matrix area of typical applications.

フルカラー LED ディスプレイ画面の業界関係者は、LED ディスプレイ画面の業界標準を整理して確立するよう努めています。, ユーザーがフルカラー LED ディスプレイ画面の性能指標を理解し、フルカラー LED ディスプレイ画面の市場を標準化できるように正しくガイドします。. フルカラー LED ディスプレイの 4 つの主要な性能指標は何ですか??

1. 輝度

明確な特性要件はありません “輝度”. フルカラーLEDディスプレイは使用環境が大きく異なるため, 周囲の明るさが違う,

ほとんどの複雑な製品の場合, 対応する試験方法が規格で指定されている限り, サプライヤーはパフォーマンスデータのリストを提供するものとします (商品情報), これは、標準で指定されている特定のパフォーマンス要件よりも優れています. これらはすべて国際基準に準拠しています, しかしこれは入札における非現実的な比較にもつながります, そしてユーザーはこれを理解していません, その結果、多くの入札書類が必要になる “輝度” 多くの場合、実際のニーズよりはるかに高い. したがって, ユーザーが正しく理解できるようにするために、 “輝度” LEDディスプレイの性能指標, 業界が指導する必要がある: 場合によっては, 異なる照明条件下で, フルカラーLEDディスプレイの明るさは要件を満たすことができます.

2. 原色の主な波長誤差

原色の主な波長誤差指数が から変更されます。 “原色の波長誤差” に “原色主波長エラー”, これは、この指標がフルカラー LED 表示画面の特性を反映していることを示しています。. 色の主波長は人間の目で観察される色の色相に対応します. この業界標準で指定されている性能要件は、LED ディスプレイの色の均一性の指標としては理解できません。. それで, まずユーザーに用語を理解してもらうためのものですか, 次に測定基準, それとも顧客の視点からフルカラーLEDディスプレイを理解し理解することが先か, そしてユーザーに分かりやすくわかりやすいパフォーマンス特性を提供します。?

3. デューティサイクル

まさに、 “性能原理” 上記の通り, “できるだけ長く, 要件はパフォーマンス特性によって表現されるべきです, デザインや説明の特性によるものではありません. This method leaves great room for technological development”. We believe that “duty cycle” is purely a requirement of design technology, and should not be used as a performance index of P2.5 LED display panel product standard. We all know that which user will care about the driving duty cycle of the display screen, and what they care about is the display effect, not our technical realization. Why should we make this kind of technical barrier ourselves to restrict the technical development of the industry ?

4. Refresh frequency

From the point of view of measurement method, it seems to ignore the real concern of users. It also does not take into account the different driving IC, driving circuit and mode used by various manufacturers of full-color LED display, which leads to the difficulty of testing. Take the full-color LED display screen as a light source, あれは, the flicker frequency of the light source. We can directly test the light source flicker frequency of full-color LED display screen with instruments similar to “light sensitive frequency meter” to reflect this index. We have done this test, using oscilloscope to measure any color of LED driving current waveform to determine the “refresh frequency”, 200 Hz measured in the white field; in the 3-level gray level and other low gray level, the measured frequency is as high as more than 10 kHz, and measured with PR-650 spectrometer; whether in the white field, or in the gray level of 200, 100, 50, the measured light source flicker frequency is 200 Hz.

The above points are just a simple description of the characteristics of several full-color LED displays. There are also many “working life”, “mean time between failure” and so on encountered in the bidding. No test method can confirm whether the LED display meets the requirements of stability, reliability or life in a short time; these requirements should not be specified. The producer can make a guarantee, but it can not replace the requirement. It is a business concept, a contract concept, not a technical concept. The industry should have a clear statement on this, which will be very beneficial to users, producers and the whole industry.

As for how to guide users to correctly understand such a complex system of products as full-color LED display, it is still necessary for the industry association to hold more technical forums on full-color LED display screen, start from reality, analyze the product from the perspective of users, ユーザーがフルカラー LED 表示画面を正しく理解できるようにガイドします。.

LED lamp Nationstar led, as the most expensive and most consumed components of LED display, play a leading role in the quality of LED display. 今日, we will introduce why led beads are the most important part of LED display screen. How to distinguish the advntages and disadvantages of LED beads?

The most important part of full color LED display is led beads.

There are three reasons for nbsp; &nbsp

初め, LED is the most important device with the most full color screen, with thousands of LEDs per square meter.

Secondly, LED is the main body that determines the optical display performance of the whole display screen, which directly affects the audience’s evaluation of the display.

Moreover, led accounts for the largest proportion of the total cost of display, ranging from 30% に 70%.

How to identify the quality of LED display lamp beads

初め, look at the solder joints. The LED strip produced by the regular LED strip manufacturer is SMT patch process, which is produced by solder paste and reflow welding process

2番, look at the quality of FPC. FPC copper and calendered copper are two types. The copper plate on the copper foil is protruding, and it can be seen more carefully from the welding pad and FPC joint

三番目, look at the cleanliness of the LED strip surface. If the LED strip is produced by SMT process, the surface cleanliness is very good, and no impurities and stains will be seen

If you aging some equipment manufacturers have a huge amount of regular aging for 24 hours or longer, you can measure the brightness of LED again. It is the best to see the attenuation of LED luminous intensity and the minimum damping quality.

What is the effect of LED beads on LED display

1. Perspective

The view of the LED display depends on the angle of view of the LED beads. Currently, most outdoor displays have a horizontal view of 100 °. , the vertical angle is 50 °; the horizontal vertical of the elliptical led and indoor display is 120 °. It’s patched. Because of its particularity, the display screen on highway is generally 30 °; circular led with angle of view is enough. Some high-rise buildings require more vertical view. The angle of view and brightness are contradictory, and the large angle of view will inevitably reduce the brightness. The choice of perspective depends on a specific purpose.

2. 輝度

LED brightness is an important factor to determine the brightness of the display. The higher the brightness of LED, the greater the residual of current, it is conducive to saving power consumption and maintaining the stability of LED. LED has different angle values. When the brightness of the chip is set, the smaller the angle is, the brighter the LED is, but the smaller the angle of view of the display screen is. 一般的に, 100 degree LED is selected to ensure that the display screen has enough view angle. For screens of different distances and different views, there should be a balance between brightness, angle and price.

3. Inefficiency

Because the full color LED display is composed of tens of thousands or even hundreds of thousands of pixels red, green and blue LED, the failure of any color LED will affect the visual effect of the whole display. 一般的に言えば, according to industry experience, the failure rate of LED display before assembly shall not exceed 3/10000, and aging 72 hours before delivery (refers to the failure caused by LED lamp bead itself)

4. Antistatic capacity

LED is a semiconductor device, sensitive to static electricity and easy to cause static electricity failure. したがって, the antistatic ability is very important for the life of the display screen. 一般的に言えば, the fault voltage of LED body electrostatic mode test shall not be less than 2000V.

5. Life

The theoretical life of LED device is 100000 時間, which is far beyond the working life of other parts of LED display. したがって, as long as the quality of LED devices, the working current is appropriate, the PCB heat dissipation design is reasonable, the production process of the display screen is rigorous, LED devices will be one of the most durable parts of the display screen.

LED equipment accounts for 70% of the price of LED display, so LED equipment can determine the quality of LED display. China is the world’s leading LED device manufacturing country, and also the gathering place of LED display. The high-tech requirements for LED display are the future development trend. The high quality requirements of LED display screen not only relate to the development trend of LED display manufacturers, but also to the development of LED display equipment manufacturers. From LED devices, China has been promoted to transform from leading LED display manufacturers to leading LED display manufacturers.

6. Attenuation characteristics

LED display will appear brightness drop and display color inconsistency after long-term operation, mainly due to the brightness attenuation of LED equipment. The attenuation of LED brightness will reduce the brightness of the entire display. The inconsistency of brightness attenuation amplitude of red, green and blue LED will lead to the inconsistency of LED display color, which is the phenomenon that we often call display cost. High quality LED devices can control brightness attenuation. According to the standard of 20mA 1000 hours lighting at room temperature, the red attenuation is less than 2%, and the attenuation of blue and green is less than 10%. したがって, the blue green LED should not use 20mA current when designing the display screen, and it is better to use only 70% に 80% of the rated current.

In addition to the characteristics of red, green and blue LED, the attenuation characteristics are affected by current, PCB heat dissipation design and display screen environment temperature.

7. Dimensions

The size of LED device affects the pixel distance of LED display screen, あれは, the resolution. 5mm oval lamp is mainly used for outdoor display screen above p16; 3mm oval lamp is mainly used for outdoor display screen of p12.5, p12 and P10; 3528 SMD LED is mainly used for P6 and P8 indoor display; 2020 SMD LED is mainly used for P2, P3 and other indoor display screens. On the premise of the same point spacing, the increase of LED device size can increase the display area and reduce the graininess. しかし, due to the decrease of black area area, the contrast will be reduced; それどころか, the LED size decreases, the display area is reduced, the graininess sense is increased, and the black area area is increased, which increases the contrast.

Due to the different angles of LED, the full-color LED display also has the angle direction, あれは, when viewed from different angles, its brightness will increase or decrease. In this way, the angle consistency of red, green and blue LEDs will seriously affect the consistency of white balance at different angles, and directly affect the fidelity of video color on the display screen. In order to achieve the matching consistency of red, green and blue LEDs in different angles, strict scientific design must be carried out in the design of packaging lenses and the selection of raw materials, which depends on the technical level of packaging suppliers. If the LED angle consistency is not good, the white balance effect of the whole screen at different angles will be very poor. Led angle comprehensive tester can measure the angle consistency of LED lamp bead, which is especially important for medium and high-grade display screen

With the continuous expansion of LED display applications, we have a certain basic knowledge of full-color LED display screen, laying the foundation for future use. The parameter setting of full-color LED display is the first step to use LED display. Now let’s take a look at the specific operation process.

Main function analysis and model construction of full color LED display.

Due to different manufacturers, the number of parameters of full-color LED display is also different, but basically each display has more than 20. After analysis and classification, it can be divided into three types: core parameters, basic parameters and auxiliary parameters.

(1) core parameters

The core parameters are necessary for full-color LED display. If the settings are not correct, the lights will not be displayed and the screen will burn out. The core parameters include cascade direction, OE polarity, data polarity, LED display type, 色, scanning mode, travel sequence and row order.

(2) basic parameters

The basic parameters are the basic parameters of full-color LED display. If the settings are not correct, コミュニケーション, non display or abnormal display will not work. The basic parameters include display width, display height, control card address, baud rate, IP address, port number, MAC address, subnet mask, gateway, LED display refresh rate, shift clock frequency and blanking time.

(3) auxiliary parameters

Auxiliary parameters are parameters set for better display and control, including the name of control card, communication display mark, brightness and screen switching time.

For the configuration of basic parameters and auxiliary parameters, input box and selection box are provided. After user input and selection, the screen can be directly connected to the settings. The core parameters can be completed by professional quick check, intelligent configuration and external file configuration.

Professional quick check

For normal and ordinary full-color LED displays, their parameters are generally fixed. 現時点では, you can arrange them into a file or table, and debug options to load the configuration.

(2) intelligent configuration

For uncommon or uncertain full-color LED displays, the parameters are unknown. 現時点では, the intelligent configuration can be used to determine the configuration parameters, and then save them for future use.

Nbsp; & nbsp; (3) external file configuration

Import a configuration from an intelligent configuration or an external file that is otherwise built.

In the three core parameter configuration methods, intelligent configuration is the focus of this paper, and its main process and functions are as follows

(1) start intelligent configuration;

(2) through the wizard, the user and the display screen can choose interactively and start the intelligent configuration operation. The core parameters are determined by filling in the initial parameters, determining the OE polarity / data polarity, determining the color, determining the scanning mode, determining the order of the points, determining the line order, and generating the configuration parameters;

(3) return the intelligent configuration parameters;

4) connect LED display and set parameters;

If it is correct, output the parameter operation;

(6) select an external file to save for later download. At this point, the intelligent configuration of the display is completed.

&Design and implementation of key functions

&Fill in the initial parameters

The whole intelligent setting process is completed by the display module. For full-color LED display, it is the first display module from the direction of signal cascade. That is, when the signal cascade direction is from left to right, the first display module is the display module in the upper left corner of the display screen; if the signal cascade direction is from right to left, the first display module is the display module in the upper right corner of the display screen. In order to facilitate observation, the general intelligent setting only needs one display module to set, and confirm that the display module is in good condition without fault (excluding abnormal lines or points).

After selecting the display module, fill in the parameters such as signal cascade direction, module width point, module height point and display screen type, and click “next” to start intelligent configuration.

Determine the polarity of OE and data

OE polarity and data polarity are very important parameters of display screen, in which OE polarity determines whether the display is on, and data polarity determines whether the display is correct.

If the OE polarity is not correct, the full-color LED display will not light up regardless of the polarity of the data; if the polarity of the data is not correct, the display is abnormal, and the display is on. したがって, the first task of intelligent configuration is to determine the polarity of OE and data. The display module has three options: “all on”, “all black / all black”, “other display or irregular changes”.

If you select “other display or irregular changes”, it indicates that there is a problem with the hardware configuration, and the hardware configuration needs to be corrected before intelligent configuration. In the specific design, 0 represents high level and 1 represents low level. High level and low level are sent in turn. The user selects on or off to determine the value of OE polarity and data polarity. したがって, there are four combinations of OE polarity and data polarity. したがって, it only takes four steps to determine the polarity of OE and data. The OE polarity value and data polarity value can be determined by sending the corresponding OE polarity value and data polarity value in turn and recording the user’s choice at each step.

Determination of color

There are three kinds of LED displays without grayscale: monochrome, bicolor and panchromatic. Monochrome usually corresponds to red. Two colors are usually red and green; full colors are usually red, 緑, そして青. For a monochrome screen, this step can be omitted; for a two-color screen, a red command is sent, and according to the color displayed, it can be judged whether the display is normal or red-green; for a full-color screen, red and green are sent respectively. According to the display color, you can judge whether the display is normal or red green, red blue or green blue.

2.4 determine scan mode

The formula for judging the scanning mode is: module height / number of lit lines = scanning mode. In the design, the command is sent to judge the scanning mode. According to the number of bright lines selected by users, the scanning mode can be calculated by using the formula. Since the scanning mode has not been determined yet, the large denominator scanning mode determined earlier is adopted for data output, and the number of bright lines on the top is taken as the module height parameter.

Determine the order of travel points

In fact, the full-color LED display is displayed point by point in order, but it uses the time-delay characteristics of human vision to quickly send the images of all points on the screen at one time to achieve the update effect of full screen image display. したがって, the order of these points must be determined before sending.

In order to get the order of travel points, you can send a point every other second and record its location to determine. The specific implementation method is as follows:

2.5.1 send point command;

の 2.5.2 display module lights up one LED pixel per second. Observe the lighting order of these pixels carefully. After confirming the lighting sequence, click the grid to track the points corresponding to the simulation display module diagram according to the lighting sequence (each grid of the simulation diagram corresponds to a pixel of the display module).

Click “next” after 2.5.3, and the system will automatically record the order of points.

In order to help users determine the order of the points, the system also provides the functions of restore, rewind, reset and inference.

2.6 determine the row order

In addition to the order of highlighting, you need to determine the order of the highlighted rows. To get the row order, you can send a line at one second intervals, send a point for each line, and then record its position. The specific implementation method is as follows: after sending the line display command, observe the lighting sequence of LED lights on the display driver board, and track the corresponding sequence points to the relative position of the line sequence. When you are finished, click next, and the system will automatically record the row order.

For ordinary LED display screen, the line sequence can be determined through the section “2.5 determining the sequence of running points”. This step can be omitted. 同時に, in order to help users determine the order of rows, the system also provides the function of re entering rows or rows

Download parameters and complete intelligent configuration

After the above parameters are determined, reorganize the order and format according to the display data configuration format, and then download to the display screen configuration, and then observe whether it is correct. If it is correct, the intelligent configuration is completed. 加えて, if necessary, it can be saved to a file for future use; if it is not correct, analyze the reasons and then conduct intelligent configuration again.