University of Illinois develops 3D displays for VR

After wearing a VR headset for a while, you may notice symptoms of eye fatigue, and the reason is actually related to the little-known neuroscience phenomenon of vergence-accommodation conflict.

In short, the distance between the eye and the object does not match the focus. Most VR goggles require you to stare at a screen only a few centimeters away from your eyes, but focus on a point farther away. This task confuses the brain, which is used to both being in the same place. But now optical engineers have developed a new type of 3D display, a breakthrough they claim will resolve the vergence-accommodation conflict.

Liang Gao from the University of Illinois in the United States said: “We hope to replace the current optical display models used in AR and VR with our 3D display to solve the problem of eye fatigue. A new generation of 3D displays.”

The new display module is only 1 by 2 inches, but it produces depth cues that allow the brain to perceive in the same way as real life. This is primarily achieved by dividing the digital display into sub-panels that create 2D images. Such sub-panel images can be moved to different depths, but are all centered on each other.

As a result, users appear to be able to see images at different depths. In addition, creative led video wall the researchers used a special algorithm to blend the edges together, making the depth information appear continuous and uninterrupted, and integrating a single 3D image.

Gao said: “Someone tried the same method as ours to create multi-panel depth, but instead of creating multiple depth images at the same time, they changed the image quickly. However, this method requires a trade-off in dynamic range or contrast. , because each image is displayed for a very short duration.”

The next step for the researchers is to reduce the size, weight and power consumption of the system, making it more practical for users to wear. Additionally, the team is looking for partners to commercialize the technology. It is understood that the complete information of the system has been published in the journal Optics Letters.

Three major problems need to be solved for small-pitch LEDs to enter the home TV field

The LED small-pitch display truly embodies China’s “smart” manufacturing, and its rapid development trend proves that the LED small-pitch display has a broad market prospect. Home TV is a big cake with a global market size of nearly one trillion yuan per year. Can small-pitch LEDs share it? From a technical point of view, there are still several problems to be solved when LED-TV enters the home.

1. Electromagnetic Compatibility (EMC). LED-TV as a household appliance, in the national standard and national compulsory certification, its radiated disturbance field strength limit, radiated disturbance power limit, power terminal disturbance voltage limit and conduction common mode disturbance voltage of various signal ports Level limits are equal to CLASS-B in the national standard GB9254-2008 for information technology equipment.

In recent years, some outstanding companies in the industry have achieved results in this research, and the electromagnetic compatibility performance of a single display cabinet has truly reached CLASS-B level. However, household TVs must regard LED-TV as a complete set, and the achievement of CLASS-B level for a single cabinet does not mean that the whole set can reach CLASS-B level. As a compulsory certification of household appliances, we must not have the idea of muddling through. Shielding, grounding, frequency shifting, filtering, balanced transmission, component upgrades, circuit technology improvements, etc., perhaps we need to use all kinds of martial arts to get rid of the devil, and the cost will inevitably increase significantly.

Two, “caterpillar”. The “caterpillar” phenomenon is a common name in the industry for the failure of an adjacent LED caused by the failure of one LED, and there are many reasons for it. Among them, the “caterpillar” phenomenon caused by the internal short circuit of a single 3-in-1 LED has not yet been found in the industry to completely cure it. In fact, the root cause of the “caterpillar” is the accumulation of a large amount of metal conductive materials in the small space of the LED. If we can start from the upstream of the chip and package, and greatly reduce the use of metal conductive materials inside the LED, especially the use of silver glue, we may be able to fundamentally eliminate the mechanism of “caterpillars”. The good news is that people of insight in the industry have already started research and exploration of many new materials and new processes.

Among the many technical routes, there are three exploration directions worthy of attention: First, the red, green and blue are all double-electrode chips with a horizontal structure, and then all the insulating glue is used as the adhesive during the die bonding, and the use of silver glue is completely eliminated, so as to maximize Eliminate the main cause of “caterpillar” generation. The disadvantage of this solution is that the number of bonding wires has increased from 5 to 6, and the original narrow space is even more cramped. The advantage is that the use of conductive silver glue is completely abandoned, and the technical solution is practical. The second is to use flip-chip LED chips. This solution can greatly reduce the use of metal conductive materials inside the LED, and the size of the LED can be made smaller, that is, the pixel density of the LED-TV can be made higher, and we can even dare to dream of 4K-LED-TV entering family. The advantages of this technical route are unquestionable, but the disadvantage is that it completely subverts the existing technical route. Therefore, this route is not something ordinary companies can do. The third is to adopt flip chip + flip chip welding process. Once it is maturely applied in the display field, it will bring infinite possibilities for the integration of LED display area array into flip chip + CSP + COB, and may bring us even greater surprises.

3. Color reproduction. LED has many technical advantages, one of which is the high color purity of the three primary colors of red, green and blue, which constitutes a wider color gamut range, thus forming an LED-TV whose color gamut range can reach more than 120% of the NTSC color gamut range . Therefore, LED display has become the darling in the media industry that needs to catch people’s attention. When modular led display panels, Anuncio.anunciase.com published a blog post,, Anuncio.anunciase.com published a blog post,-TV enters the home, we not only need high color purity (that is, wide color gamut), but also need realistic color reproduction.

The low color reproduction of LED-TV is mainly due to the distortion (reddish) of human skin color. To solve this problem, the three primary colors of red, green and blue can be adjusted and matched, which can be divided into three levels for practice. The first level is “dominant wavelength matching”. The main wavelength matching of red LED is about 612nm, the main wavelength matching of green LED is about 548nm, and the main wavelength matching of blue LED is about 465nm. The second realm is “higher purity of the three primary colors”. After realizing the first level of “dominant wavelength matching”, we found that if the “dominant wavelength matching” is achieved at the expense of color purity, wouldn’t it be “the gain of the mulberry and the loss of the east corner”? Maybe we have to start with upstream chip materials, and even use multi-primary color matching technology to fully realize not only red, green and blue “dominant wavelength matching” but also “higher color purity”. The third realm is “balanced enhancement of the purity of the three primary colors”. If we match the wavelength and improve the color purity, but the improvement rate of the color purity of the three primary colors is uneven, that is, the red color purity increases by about 6%, the blue color increases by 3% to 4%, and the green color purity is basically the same. Then the phenomenon of “red-faced Guan Gong” is still lingering. Therefore, we also need to start with the epitaxial materials in the upstream, the packaging in the midstream (multi-primary color packaging), and the color space transformation in the downstream, and strive to achieve a balanced improvement in color purity under the condition of matching the dominant wavelengths of the three primary colors.

Touchscreen LED screens are revolutionizing the way we interact with digital content, offering immersive and engaging experiences that blur the lines between the physical and digital worlds. By combining the vibrant visuals of LED displays with the intuitive interface of touchscreen technology, these innovative screens are changing the game across various industries, from retail and entertainment to education and hospitality. Here’s how touchscreen LED screens are reshaping interactive experiences:

Enhanced Engagement: Touchscreen LED screens provide a hands-on, interactive experience that captivates users and encourages active participation. Whether browsing products in a retail store, exploring exhibits in a museum, or interacting with digital signage in a public space, users are drawn to the tactile nature of touchscreen displays, leading to increased engagement and longer dwell times.

Personalized Interaction: Touchscreen LED screens enable personalized interaction by allowing users to navigate content, customize preferences, and access information based on their individual interests and needs. Through intuitive gestures such as tapping, swiping, and pinching, users can interact with content in a natural and intuitive way, creating a more personalized and immersive experience.

Multi-Touch Capabilities: Touchscreen LED screens support multi-touch capabilities, allowing multiple users to interact with the display simultaneously. This feature is particularly beneficial in collaborative environments such as classrooms, boardrooms, and collaborative workspaces, where users can collaborate on projects, share ideas, and engage in group activities using the same screen.

Dynamic Content Delivery: Touchscreen Foldable LED Mesh Display (view site…) screens enable dynamic content delivery, allowing users to access real-time information, updates, and interactive experiences on demand. Whether displaying live data feeds, interactive maps, or immersive multimedia content, touchscreen displays provide a versatile platform for delivering dynamic and engaging content that captures users’ attention and keeps them informed and entertained.

Gamification and Interactive Experiences: Touchscreen LED screens lend themselves well to gamification and interactive experiences, allowing users to participate in games, quizzes, and interactive challenges. By integrating gamified elements such as leaderboards, achievements, and rewards, touchscreen displays can transform passive viewing experiences into active and enjoyable interactions, fostering a sense of competition, motivation, and achievement among users.

Data Capture and Analytics: Touchscreen LED screens enable data capture and analytics, allowing organizations to collect valuable insights into user behavior, preferences, and engagement patterns. By tracking user interactions, navigation paths, and dwell times, organizations can gain valuable insights into audience demographics, interests, and behaviors, which can inform content strategies, marketing campaigns, and business decisions.

Accessibility and Inclusivity: Touchscreen LED screens promote accessibility and inclusivity by providing intuitive interfaces and customizable features that accommodate users with diverse needs and abilities. Features such as adjustable font sizes, voice commands, and assistive technologies enhance accessibility for users with disabilities, ensuring that everyone can participate and engage in interactive experiences.

In conclusion, touchscreen LED screens are transforming interactive experiences across various industries by offering enhanced engagement, personalized interaction, multi-touch capabilities, dynamic content delivery, gamification, data capture, accessibility, and inclusivity. As organizations continue to embrace digital innovation and leverage touchscreen technology to create immersive and interactive experiences, touchscreen LED screens will play an increasingly important role in shaping the future of interactive content delivery and user engagement.

LED screens are revolutionizing healthcare facilities by offering innovative solutions that improve patient care, enhance communication, and streamline operations. From digital signage and patient education to wayfinding and telemedicine, LED screens are transforming the healthcare experience for patients, caregivers, and staff. Here are some innovative applications of LED screens in healthcare facilities:

Digital Signage and Wayfinding:

LED screens serve as digital signage and wayfinding solutions to help patients and visitors navigate healthcare facilities efficiently. Digital directories, interactive maps, and dynamic signage displayed on LED screens provide clear directions to different departments, clinics, and amenities within the facility. By guiding patients to their destinations and reducing confusion, LED screens improve the overall patient experience and streamline the flow of traffic in busy healthcare environments.

Patient Education and Engagement:

LED screens are used for patient education and engagement initiatives to empower patients with information about their health, treatment options, and self-care practices. Interactive touchscreen displays and multimedia presentations displayed on LED screens deliver educational content on medical conditions, procedures, medications, and lifestyle management. By providing patients with access to personalized health information and resources, LED screens promote informed decision-making and encourage active participation in their healthcare journey.

Entertainment and Distraction:

LED screens provide entertainment and distraction for patients during their hospital stay, helping to alleviate boredom, anxiety, and stress. Televisions equipped with LED screens offer a wide range of entertainment options, including movies, TV shows, games, and internet access, to keep patients entertained and engaged while they recover. By offering access to entertainment content and digital media, LED screens create a more comfortable and enjoyable environment for patients and contribute to their overall well-being and satisfaction.

Real-Time Patient Monitoring:

LED screens are integrated with medical devices and monitoring systems to display real-time patient data, vital signs, and clinical information at the point of care. Large-format LED displays located in patient rooms, nursing stations, and intensive care units provide healthcare providers with instant access to critical patient information, allowing them to monitor patients closely and respond quickly to changes in their condition. By displaying real-time data in a clear and visible format, LED screens enhance patient safety and improve clinical decision-making in healthcare settings.

Telemedicine and Remote Consultations:

LED screens facilitate telemedicine and remote consultations by enabling healthcare providers to conduct virtual visits and teleconferences with patients and colleagues from remote locations. Integrated with video conferencing software and telehealth platforms, LED screens support real-time communication and collaboration among healthcare professionals, allowing them to consult with specialists, review medical images, and discuss treatment plans remotely. By expanding access to healthcare services and expertise, LED screens improve patient outcomes and reduce the need for in-person appointments.

Staff Communication and Training:

LED screens are used for staff communication and training initiatives to disseminate important updates, announcements, and training materials to healthcare employees. Digital bulletin boards, staff message boards, and training videos displayed on LED screens provide staff members with timely information about policy changes, safety protocols, and professional development opportunities. By facilitating internal communication and knowledge sharing, LED screens enhance staff productivity, collaboration, and morale in healthcare facilities.

In conclusion, LED screens offer innovative applications that enhance the delivery of healthcare services, improve patient outcomes, and optimize operational efficiency in healthcare facilities. From digital signage and patient education to real-time monitoring and telemedicine, LED screens play a vital role in transforming the healthcare experience and advancing the delivery of patient-centered care. By leveraging led panel screen indoor screen technology, healthcare facilities can create more engaging, efficient, and patient-friendly environments that meet the evolving needs of patients, caregivers, and staff in the digital age.

Outdoor LED screen installations often face challenges related to glare and reflection, which can affect visibility, readability, and overall viewing experience. Addressing these challenges is crucial to ensuring optimal performance and satisfaction for viewers. Here are some strategies for overcoming glare and reflection in outdoor LED screen installations:

Anti-Glare Coatings:

Apply anti-glare coatings or films to the surface of the LED screens to minimize glare and reduce the reflection of ambient light. These coatings help diffuse light and improve visibility by minimizing distracting reflections and ensuring clear viewing angles.

Matte Finishes:

Choose LED screens with matte finishes rather than glossy surfaces to reduce glare and reflection. Matte finishes diffuse light more effectively, resulting in improved visibility and readability, especially in bright outdoor environments.

Optimal Screen Positioning:

Position the LED screens strategically to minimize direct exposure to sunlight and reflective surfaces. Install screens at angles that minimize glare and reflection, taking into account the orientation of the sun and surrounding architectural features.

Shading and Canopies:

Install shading structures or canopies above the LED screens to provide protection from direct sunlight and reduce glare. Shading devices such as awnings, canopies, or louvers help create a shadowed area around the screens, minimizing the impact of sunlight and improving visibility.

Polarizing Filters:

Use polarizing filters on the surface of the LED screens to reduce glare and enhance contrast. Polarizing filters help block out horizontally polarized light, such as glare from sunlight or reflective surfaces, while allowing vertically polarized light from the LED pixels to pass through.

Ambient Light Sensors:

Incorporate ambient light sensors into the LED screen system to automatically adjust brightness levels based on ambient light conditions. This ensures optimal visibility and readability in varying lighting conditions while minimizing glare and reducing power consumption.

Surface Treatments:

Treat reflective surfaces in the surrounding area to minimize glare and reflection. Apply matte finishes, textured coatings, or anti-reflective films to nearby buildings, glass facades, or other reflective surfaces to reduce the amount of light reflected onto the LED screens.

Regular Maintenance:

Implement a regular maintenance schedule to clean the surface of the LED screens and remove any dirt, dust, or debris that may contribute to glare or reflection. Keep the screens free from smudges, fingerprints, and watermarks to maintain optimal visibility and performance.

User Education:

Provide user education and guidelines to viewers on how to minimize glare and optimize viewing conditions when interacting with outdoor led screen installation LED screens. Encourage viewers to adjust their viewing angles, use shading devices, or wear polarized sunglasses to improve visibility and reduce glare.

By implementing these strategies and addressing glare and reflection proactively, outdoor LED screen installations can achieve optimal visibility, readability, and viewer satisfaction, enhancing the overall effectiveness and impact of the displays in outdoor environments.

Technical analysis of LED transparent screen

Those who have experience in stage digital stage art have discovered such an indisputable fact: In the technology competition between side light and front light, the front light LED transparent screen can not stand the test of digital stage beauty, and it is completely defeated and withdraws sadly. Opened the stage digital stage art rental market.

Whether it is KUM, the Queen’s visual creation and design team of Queen Faye Wong, or Zhang Huimei’s stage design team, they all chose Yipin Optoelectronics side-emitting LED transparent screen without any suspense.

From the 3rd Silk Road International Film Festival to the Beijing Satellite TV Spring Festival Gala, to Zhejiang Satellite TV’s mid-year festival that invited most of the entertainment industry, Yipin’s side-emitting LED transparent screens were used.

The 3rd Silk Road Film Festival

From the 2016 Faye Wong “Magic Music” concert to the “Utopia 2.0 Celebration” 2017 Zhang Huimei World Tour Concert, the side-emitting LED transparent screen of Yipin Optoelectronics is also used.

From the 2017 Shanghai International Auto Show to the Rolls-Royce Tasting Day, YIPLED’s side-emitting LED transparent screens are still used.

2017 Shanghai International Auto Show

What was the reason for Zhengguang to lose in the confrontation with Sidelight? Why do digital dancers only choose side-emitting LED transparent screens?

What does the “side” of a sidelight mean?

wider viewing angle

The viewing angle of the positive-emitting LED transparent screen is only 120°. For the 180° stage, the viewing angle range of the scene is very small, so that the viewers on both sides of the stage cannot feel the visual effects of the stage at all. The viewing angle of the side-emitting LED transparent screen can reach 160°, which has a wider viewing angle, so that the audience on both sides of the stage can also enjoy the ultimate stage visual feast.

More even brightness distribution

Due to the occlusion of the brackets on both sides of the lamp beads, the brightness of the positive-emitting LED transparent screen decreases from the best position in the middle along the two sides. The low brightness makes the audience on both sides of the stage unable to see the images on the screen at all. The side-emitting LED transparent screen is not blocked by the bracket, and the brightness increases from the front of the screen along the two sides. The front and the left and right tops are the best viewing surfaces, making the overall presentation of the stage better.

More reliable quality assurance

Rental LED transparent screens need to be frequently loaded and unloaded and used repeatedly according to the location of use and the needs of the stage scene. Bumps and bumps are inevitable, so the requirements for product durability are very high. Due to the structural defects of the positive-emitting LED transparent screen, when a collision or drop occurs, the lamp beads are directly stressed, which can easily cause the screen to die. At the beginning of the design of the side-emitting LED transparent screen, how to reduce product damage caused by disassembly and assembly and the maintenance convenience after damage are considered.

higher permeability

As we all know, the LED transparent screen is more and more favored by stage digital dance designers because it overcomes the shielding characteristics of the traditional led display sheet structure on the stage and breaks through the design restrictions of the traditional screen on the scene space creation! However, the positive light-emitting LED transparent screen is only 75%, and there is even a “LED transparent screen” with a transmittance rate of only 48%, which has completely lost the meaning of the transparent screen. The side-emitting LED transparent screen of Yipin Optoelectronics can increase the transmittance rate to 85%, which can really help the digital stage artist to present the three-dimensional sense and reality of the three-dimensional space of the stage, and can improve the expressiveness of the program.

In the field of side-emitting LED transparent screens, Yipin Optoelectronics has mastered the core technology of side-emitting LED transparent screens by virtue of its strong independent research and development strength and technology accumulation. It has a large number of high-quality patents, and has obtained 6 invention patents, 11 utility model patents, 6 appearance patents, and 20 software copyright certificates. Yipin’s side-emitting led video panel outdoor transparent screen is independently developed and manufactured from core components, screen body to system integration.

Compared with the various constraints of positive light-emitting technology on stage digital stage art, Yipin Optoelectronics side-emitting LED transparent screen creates infinite possibilities for the stage and more excitement for digital stage art in a transparent and beautiful form!

How to prevent condensation on the LED display?

As we all know, condensation is a potential hidden danger of LED display screens, especially for components such as module connectors that do not have spray-painted waterproof components, condensation is very likely to corrode the metal material of the components, thus affecting the connection performance, which affects the display effect of the display. Outdoor led display screens are extremely prone to condensation and water droplets on the circuit board under such uncertain conditions as wind, rain, lightning and snow, high and low temperature changes outdoors, which will affect the display screen. In this case, the product life is only indoor LED display screens. about 30%.

How to effectively prevent condensation and waterproof, improve the life of the display circuit board, and save repair costs has become a major problem in the quality of outdoor 80mm Flexible LED Mesh Screen displays. Let’s take a look at related solutions:

Outdoor led display anti-condensation solution one [coating three anti-paint]

Aiming at the problem of condensation on outdoor LED displays, many outdoor LED display applications in my country do not protect circuit board products, so the problem is widespread. In view of this situation analysis, the use of anti-condensation three-proof paint solution can solve the problem of circuit board condensation on the one hand, and can improve the product life on the other hand. The principle of the anti-condensation solution for anti-condensation conformal paint removal is mainly to attach a layer of micron-level anti-condensation conformal paint to the surface of the circuit board through low-concentration micron coating technology. It has extremely low surface tension, so that If not, the condensation on the circuit board will automatically slide off, thus achieving the anti-condensation effect.

Outdoor led display anti-condensation solution two [electric heating method]

Adopt electric heating method: add anti-condensation device inside the LED display; keep the temperature inside the display always higher than the ambient temperature outside the screen, and try to reduce the relative humidity inside the screen to completely prevent condensation inside the screen.

Selecting the right location for your LED advertising screen is crucial to the success of your outdoor advertising campaign. The location not only determines the visibility and reach of your advertising message but also influences audience engagement and the effectiveness of your campaign. In this guide, we’ll explore key factors to consider when choosing the perfect location for your LED advertising screen.

Audience Demographics:

Consider the demographics and behaviors of your target audience when selecting a location for your LED advertising screen. Identify areas with high foot traffic or vehicular traffic that align with your target demographic profile. Analyze demographic data such as age, gender, income level, and lifestyle preferences to ensure that your advertising message reaches the right audience.

Visibility and Exposure:

Choose a location with high visibility and exposure to maximize the impact of your LED advertising screen. Look for high-traffic areas such as busy city streets, shopping districts, transportation hubs, and tourist attractions where your screen will be seen by a large number of people. Position your screen in areas with unobstructed views and minimal visual clutter to ensure maximum visibility and impact.

Traffic Patterns:

Analyze traffic patterns and flow to determine the optimal location for your LED advertising screen. Identify intersections, traffic signals, and choke points where vehicles and pedestrians are likely to stop or slow down, providing ample time for viewers to engage with your advertising message. Consider placing your screen near major thoroughfares or commuter routes to reach a wider audience.

Competitive Landscape:

Assess the competitive landscape and presence of other advertising displays in the area when selecting a location for your LED screen. Look for areas with limited competition and high demand for advertising space to maximize the visibility and effectiveness of your campaign. Differentiate your screen by offering unique content, innovative features, or strategic positioning to stand out from competitors and capture audience attention.

Local Regulations and Permits:

Familiarize yourself with local regulations and permitting requirements governing outdoor advertising displays in your target area. Obtain the necessary permits and approvals from local authorities before installing your LED screen to ensure compliance with zoning laws, signage regulations, and safety standards. Consult with city planners, transportation authorities, and property owners to identify suitable locations and navigate the permitting process smoothly.

Environmental Factors:

Consider environmental factors such as sunlight exposure, weather conditions, and ambient lighting when selecting a location for your LED advertising screen. Choose locations where your screen will be visible during both day and night and where it can withstand exposure to sunlight, rain, wind, and other elements. Install weatherproof enclosures and protective coatings to ensure the longevity and durability of your screen in outdoor environments.

Accessibility and Safety:

Ensure that your chosen location is easily accessible to viewers and meets safety requirements for installation and maintenance. Consider factors such as pedestrian access, parking availability, and proximity to public transportation when evaluating potential locations. Prioritize safety considerations such as traffic hazards, line of sight obstructions, and structural integrity to minimize risks to pedestrians, motorists, and property.

Strategic Partnerships and Sponsorships:

Explore opportunities for strategic partnerships and sponsorships with property owners, landlords, businesses, or event organizers to secure prime locations for your LED advertising screen. Collaborate with stakeholders to negotiate favorable terms, access desirable locations, and leverage existing infrastructure or amenities to enhance the visibility and impact of your advertising campaign.

By considering these key factors when choosing the perfect location for your 50mm Soft LED Mesh Curtain advertising screen, you can maximize visibility, reach, and engagement with your target audience, ultimately driving the success of your outdoor advertising campaign. Conduct thorough research, assess potential locations carefully, and collaborate with stakeholders to ensure that your LED screen achieves its marketing objectives effectively in your chosen environment.

Principles and applicable conditions of LED display steel structure hoisting scheme!

LED Curtain for Outdoor Media Façade display steel structure installation is a relatively complex and comprehensive technology with many contents and a wide range. Combined with some steel structure projects, the basic principles and applicable conditions of steel structure hoisting scheme design are expounded, and the feasibility of conventional installation methods and corresponding technical measures are summarized.

With the continuous development of science and technology, the shape and structural form of steel structures are becoming more and more complex, which brings new challenges to the design and construction of steel structures. For example, Olympic venues represented by “Bird’s Nest” and “Water Cube”, as well as influential steel structure projects such as the National Center for the Performing Arts, the site of the new CCTV station, the Guangzhou TV Tower, and the stupa of Famen Temple, have not only innovated and developed in design , At the same time, new achievements have been made in steel structure installation technology. Many mature and advanced technological methods have gradually become construction methods, which have played a role in promoting the development of the steel structure industry.

Due to market reasons, steel structure installation accidents and violations occur from time to time, causing unnecessary economic losses and social impacts. In order to further improve the overall level of steel structure construction and promote the development of the industry, in addition to strengthening construction site management, steel structure construction should also conduct research and summary in terms of construction organization design, schemes, technical measures, etc.; vigorously promote new technologies and new processes; Features, choose advanced, reliable and economical construction scheme.

Basic principles of steel structure hoisting scheme for led display

Policy-Based on the drawings and norms as the criterion, strictly implement the relevant national safety production regulations.

Reliability – Adhere to safety first, ensure the feasibility of program implementation and increase its reliability. No matter which method is adopted, it is first necessary to consider whether the program has successful precedents and supporting equipment, otherwise, program demonstration must be carried out. According to the structural characteristics, the construction check calculation is carried out to prove whether the stability of the structure, the stress and deformation of the members meet the requirements during the construction stage of the method. Whether the mechanical equipment used can meet the installation requirements. Whether the construction site conditions are met, such as whether the civil construction environment and surrounding structures restrict the implementation of the plan, etc.

Advancement——With the development of science and technology, new techniques, new technologies and new equipment in the field of structural installation emerge in an endless stream. For example, the advent of large-tonnage cranes, computer synchronous control of overall lifting and sliding technology have added a new chapter to structural installation. Especially for large-scale steel structure projects, when site conditions and structural forms permit, new technologies and new processes should be vigorously promoted; the amount of high-altitude operations should be reduced as much as possible, and the installation efficiency of steel structures should be continuously improved.

Economical – A good installation plan should be simple in method, appropriate in measures, high in efficiency, low in construction cost, wide in application range, and stand review and test. Therefore, we must adhere to the principle of program comparison, conduct technical and economic analysis, and choose a program with a short construction period and low cost.

Applicable conditions for the steel structure hoisting scheme of the led display

Due to the inconsistency of architectural shapes and structural forms, and the wide variety of construction site conditions, it can be said that there is no one construction method or scheme suitable for the installation of any steel structure project, so each installation method has its own supporting conditions.

Commonly used installation methods for grid structures include: high-altitude bulk installation method, strip and block installation method, structural sliding method, support frame sliding method, overall hoisting method, and overall lifting method.

Consider according to the process method: understand the characteristics of the structure form, structure weight, installation height, span, etc., and use mature and advanced installation processes as much as possible in combination with the actual situation on site.

Consider the lifting equipment: first, choose your own equipment, make full use of the on-site lifting equipment, and then rent the nearest one. General situation: When the number of components is small, truck-mounted cranes are often used; small and medium-sized truck-mounted cranes are mostly used for portal frame hoisting; when the installation period is long, the installation height and the radius of gyration are large, crawler cranes are more economical than truck-mounted cranes; overall Hydraulic synchronous lifting (jacking) devices are mostly used for hoisting and sliding; tower cranes are generally used for middle and high-rise steel structure installation; gantry cranes and bridge erecting machines are mostly used for ordinary bridge installation.

Flip-chip construction – the flip-chip method is a special installation process that first goes up and then down. It is suitable for structures with large height-to-width ratios, such as steel towers, masts and other structures. In the case that it is difficult for a conventional crane to be hoisted close by, the upside-down method is generally used. When adopting this method, it is necessary to focus on the overall stability of the structure and the stability of the equipment itself during the installation process, and reliable support and stability measures must be taken.

Structural slip method – The structural slip method has been developed to adopt hydraulic pusher and computer synchronous control technology, which is one step more advanced than the grid slip method in the past. Its applicable conditions are: first, due to the limitation of site conditions, cranes and support frames cannot be installed in the span; second, the structural support conditions are conducive to the laying of sliding tracks; third, the strength and strength of the sliding unit structure determined by calculation The stiffness meets the requirements; fourth, understand the structural support form and fixing method; fifth, the longer the longitudinal slip route, the higher the efficiency.

Support frame sliding method – its applicable conditions are to occupy the inner space of the span, the installation height is low, the structure area is large or the longitudinal length is long. First, when the installation height is below 15 meters, ordinary fastener-type steel pipe scaffolding or bowl-shaped scaffolding can be used as the support frame; second, when the frame body is high and the load-bearing capacity is large, the steel support frame should be used. No matter which scheme is adopted, in addition to the requirements of the code, the design and calculation should also consider the horizontal dynamic load, and if necessary, add large diagonal braces to improve its overall stability.

Overall lifting method – the overall lifting method currently mostly uses computer synchronous control and hydraulic lifting equipment developed by Tongji University. This process gradually replaces the core-through motorized lifting and jack lifting schemes. The equipment is light and the technology is advanced. Its applicable conditions are: first, it occupies the space inside the span; second, the installation height is high; third, the components are heavy; fourth, it is limited to vertical hoisting and cannot be displaced horizontally. That is, the higher the installation height and the heavier the lifting weight, the better the effect.

Indigenous method of hoisting – Indigenous method of hoisting is to use single-angle poles, herringbone frames, winding machines, pulley blocks, etc. as lifting equipment for structural hoisting. It is suitable for projects with heavy components, small quantities and high installation heights. Due to the increasing number of large-tonnage lifting equipment and advanced installation techniques, there are fewer and fewer local methods of hoisting.

Rotation method construction – this method is mainly used for bridge installation. Due to the influence of railway, highway traffic, and special environments such as mountains, rivers and ditches, when other bridge erection methods are restricted, the rotation method is often used for construction.

Overall hoisting method-it is basically similar to the overall hoisting method, except that the lifting equipment is different, and it is suitable for small and medium-sized structure installation. In the early days, multiple single-legged poles or herringbone frames, hoists, pulley blocks and cable wind systems were used for large-tonnage hoisting. Now, because there are many large-tonnage cranes, several cranes are selected for centralized lifting and installation for small and medium-sized projects according to needs.

The five major technical advantages of the new transparent LED display are obvious

As the outdoor LED advertising display market in first-tier cities has gradually become saturated, how the video advertising media market will develop in the future has become the focus of many LED display manufacturers’ close attention. LED transparent screen implementation principle LED transparent screen is a micro-innovation of the light bar screen. It has made targeted improvements to the patch manufacturing process, lamp bead packaging, and control system. In addition, the structure of the hollow design reduces the number of structural components. Blocking the line of sight maximizes the perspective effect. At the same time, it also has a novel and unique display effect. The audience stands at an ideal distance to watch, and the picture seems to be suspended on the glass curtain wall. The emergence of transparent LED transparent screens has expanded the application territory of LED displays to the two major markets of architectural glass curtain walls and commercial retail windows, which has become a new trend in the development of new media. The report “Transparent Display Technology and Market Outlook” published by Displaybank in 2012 boldly predicted that by 2025, the market value of transparent display would be about 87.2 billion US dollars.

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So what are the technical advantages of transparent LED displays in the architectural media field? the

1. What is a transparent LED display? the

As the name suggests, the transparent LED display means that the LED display has the property of transmitting light like glass. Its implementation principle is the micro-innovation of the light bar screen, and targeted improvements have been made to the SMT manufacturing process, lamp bead packaging, and control system. In addition, the structure of the hollow design reduces the blockage of the structural components to the line of sight. , which maximizes the perspective effect. the

At the same time, it also has a novel and unique display effect. The audience stands at an ideal distance to watch, and the picture seems to be suspended above the glass curtain wall. LED transparent screens expand the application of LED displays to the two major markets of architectural glass curtain walls and commercial retail windows, which has become a new trend in the development of new media. the

Transparent LED display is a new type of ultra-transparent LED display technology. It has a transmittance of 70%-95%, and the thickness of the panel is only 10mm. The LED unit panel can be installed close to the glass from behind the glass, and the unit size can be adjusted. Customized according to the size of the glass, the impact on the lighting perspective of the glass curtain wall is also small, and it is convenient for installation and maintenance. the

2. The Background of the Birth of Transparent LED Display

Along with the flood of LED display screens for outdoor advertising, there are a series of negative problems, including the image of the city. The LED display screen can indeed play the role of brightening the city and releasing information when it is working, but it seems to be a “scar” of the city when it is “resting”, which is out of tune with the surrounding environment and greatly affects the beauty of the city. , spoiling the cityscape. the

Due to the emergence of these problems, the approval for the installation of outdoor large screens has become more and more cumbersome, and the management of outdoor advertising has become more and more stringent. the

The transparent led display not only integrates all the advantages of the conventional outdoor high-definition led display, but also eliminates the aesthetic problems of the city to the greatest extent. Because it is mostly installed behind the glass curtain wall, even when it is not working during the day, it will not have any impact on the surrounding environment. At the same time, because it adopts a new form of indoor advertising outdoor communication, it can well avoid the approval of outdoor advertising. the

In addition, with the acceleration of urban construction, high-end and high-grade building materials such as glass curtain walls have gradually become popular. Transparent screens are characterized by their lightness, thinness, no steel frame structure, easy installation and maintenance, and good permeability. It can be said to hit it off with the glass curtain wall. Not only does it have no sense of disobedience when applied to the glass curtain wall, but also because it is fashionable, beautiful, modern and technological, it adds a special aesthetic feeling to urban buildings. Therefore, the LED transparent screen has won the unanimous approval of everyone in the market, and has received widespread attention and enthusiasm. the

3. Characteristics of transparent led display

(1) The high transparency effect has a very high perspective rate, with a permeability rate of 70%-95%, which ensures the lighting requirements and viewing angle range of lighting structures such as between floors, glass facades, windows, etc., and ensures the original glass curtain wall. Some lighting perspective function. the

(2) It 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 screen is only 12Kg/㎡. It is directly fixed on the glass curtain wall without changing the building structure. th

A flexible yogini doing a beautiful hard yoga pose. Photo by Oksana Taran.(3) There is no need for a steel frame structure, which saves a lot of installation and maintenance costs. Directly fixed on the glass curtain wall without any steel frame structure, saving a lot of cos

(4) Unique display effect Because the display background is transparent, it can make the advertising screen appear to be floating on the glass curtain wall, which has a good advertising effect and artistic effect. th

(5) Convenient and fast maintenance. Indoor maintenance is fast and safe, saving manpower and material resources. th

(6) Energy saving and environmental protection do not require traditional refrigeration systems and air conditioners to dissipate heat, saving energy by more than 30% compared with ordinary LED displays

4. Five problems that need to be solved for transparent led displa

(1) Dilemma between transparency and dot spacing Judging from several products currently on the market, the highest transparency of transparent screens has reached 85%, and the minimum dot spacing is 3mm. For transparent screens, has its transparency and dot spacing reached the limit? In fact, it is not, because the PCB board, the driver IC, and the lamp beads themselves are opaque. If the dot spacing is made smaller, it will inevitably be at the cost of losing a part of the transparency, and the high transparency happens to be transparent. The biggest advantage of the screen; and the price of improving the transparency is the expansion of the dot pitch, which affects the clarity and display effect of its picture. Therefore, this is a dilemma. th

(2) After-sales service, product maintenance convenience and product reliability. First of all, the side-emitting LED lamp beads used in transparent LED displays on the market are not very versatile, poor in consistency and stability, resulting in high production costs and troublesome after-sales services. Secondly, there are many customized products in the market, and the quantity is small, and it is difficult to mass-produce, which is also an important reason for the high cost of LED transparent screens. Left picture: perspective effect when the screen is not bright; middle picture and right picture: effect when the screen is playing advertisement

(3) How to achieve “true transparency” The so-called “true transparency” means that the transparent screen must be truly integrated with the glass structure. th

(4) The problem of standardization and customization Standardization can reduce costs, and customization can make transparent screens and buildings achieve a high degree of harmony

(5) The problem of light transmission on the back of the transparent screen When playing advertisements on this kind of screen, when designing the content of the advertisement, it is necessary to remove the unnecessary background color and replace it with black, and only display the content that needs to be expressed. When the black part does not emit light, it is a transparent effect. This playback method can greatly reduce light pollution. th

5. Application Potential of Transparent LED Display Marke

The new transparent LED display has opened up a new application field and has broad market prospects. It is especially suitable for the field of “architectural media”. It caters to the needs of an emerging market and successfully creates a high-quality outdoor media resource. According to statistics, the total area of China’s modern glass curtain walls has exceeded 70 million square meters, mainly concentrated in urban areas. Such a huge stock of glass curtain walls is a huge potential market for outdoor media advertising. The advertising value of this market has not yet Being fully developed, glass curtain wall is a new blue ocean field under the condition that urban outdoor advertising resources are increasingly exhausted. The scope of this field is very wide, such as urban landmark buildings, municipal buildings, airports, automobile 4S stores, hotels, banks, chain stores and other glass curtain wall buildings with advertising commercial value.