The Technical Definition of SMD

SMD is the abbreviation of Surface Mounted Devices, which results from the SMT (Surface Mount Technology) process. Based on different packaging structures, SMD LED products can be divided into two categories: TOP LED and CHIP LED.
SMD Display Manufacturing Process
Mainstream product specifications Currently SMD fine-pitch displays mainly use the following diode models:
2121,1921,1820,151 5,1415,1212,1010, 0808 and 0606. The smaller the diodes, the finer pitch they can be used for. However, SMD 0808 and 0606 tend to be less reliable as individual LED diodes used for sub-1 mm products.
SMD Diodes Roadmap

 Advantages and disadvantages of SMD :

Introduced in 2001, SMD packaging technology is highly mature for 1mm and above products, whether for indoor or outdoor applications, with almost two decades of development. SMD has a well-established supply chain with complete equipment and experienced production lines for mass production. SMD diodes are highly reliable and easy to repair, and the cost is relatively low compared to other packaging methods. 

SMD surfaces are not sealed like COB’s, therefore the level of protection against water, dust, and external force (during transportation and installation) is not as high as expected. This is why fine-pitch LED display installation becomes a white-glove job, requiring delicacy and experience. Some SMD LED displays use a module mask (shader). In high-temperature environments, mask bulging is likely to occur, which will affect viewing. In most cases, the mask surface may turn white or yellow after a period of use, which may also degrade the user experience. Pixel pitch at or below P0.7mm presents physical limitations. Due to the size of SMD packaging and welding wiring layout space on PCB boards, it is challenging for SMD displays to advance to finer pitches.

Evolution and status quo of LED display packaging

LED display packaging has developed from early-days DIP (dual in-line package) to today’s multiple packaging methods such as SMD, IMD, and COB,. These methods have reshaped the industry.

 

Since the advent of SMD in 2001, the market share of DIP (direct insertion pattern) packaging has been shrinking annually. However, DIP is still used to ensure product reliability in harsh environments like high-altitude or ultra-low temperature conditions. SMD has played a dominant role in LED packaging for more than a decade. It was not until 2016 that COB began to attract more market attention.
In 2017, SONY launched a Micro-LED display based on flip-chip COB, which inspired the industry to further explore the COB development path. At the end of 2017, the concept of Mini-LED was raised. That greatly accelerated the evolution of pixel pitches towards a finer level. Limited by technology and equipment, conventional single diode SMD packaging reaches it’s smallest size at 0.5*0.5mm. Any smaller packaging size from this point is no longer processable by the current SMT process. This physical limit encouraged the entire industry to explore other technologies such as COB (especially flip-chip COB) to continue its technological evolution.
In 2018, NationStar launched its 4-in-1 IMD09 and put forward the concept of IMD, which combined the advantages of both SMD and COB. This officially began the three-way race between SMD, IMD, and COB in the fine-pitch LED display industry.
 Evolution of LED Diodes Packaging 2000-2019

Fine-pitch LED Display Industry Overview

Definition of fine-pitch LED displays

Fine-pitch LED display generally refers to LED displays with pixel pitch at or below 2.5mm. Mainstream fine-pitch LED display products are referred to as P2.5, P1.8, P1.5, P1.2, P0.9, etc. As technology develops and costs lower, direct-view fine-pitch LED displays are being used in an increasing number of applications, including corporate, retail, and educational settings, control rooms, broadcast studios, 3-D, and virtual or augmented reality displays. Compared with traditional larger-pitch LED displays, fine-pitch LED displays to bring higher resolution (full HD, 4K, 8K, and higher) to the application market, allowing an increasingly broader range of creativity. Fine-pitch LED display is a general term for a larger set of systems, consisting of LED display, HD/UHD display control systems, video processing systems, etc. Fine-pitch LED displays to use pixel-level point control technology to achieve a highly detailed level of brightness, color reproduction, and uniformity in every pixel unit. A key production link in the fine-pitch LED display manufacturing process is Automatic Reflow Welding, which helps to improve the reliability of welding and tremendously reduces the pixel failure rate.

 

IMD 4 in 1 LED

Development history of fine-pitch LED displays

Since LED displays entered the application market, they have developed from single- and dual-color displays to full-color screens, then to fine-pitch. Prior to 1993, LED display screens were limited to red and green dual-color displays and were used in limited applications such as traffic lights and the banking & securities industry. In 1993, Nakamura Shuji invented the blue LED chip, which completed the three primary colors (RGB) and opened a new chapter of full-color displays. In 2001, SMD packaging was introduced, and Chinese LED display manufacturers gradually grew in scale and expanded from domestic to overseas markets. By 2009, European and American enterprises withdrew from the LED display manufacturing market, and Chinese manufacturers became a driving force in the global LED display industry.

Milestones in the LED Display Development History

In 2010, with the launch of the first P2.5mm fine-pitch display, the entire industry began a long-term evolution from outdoor to indoor applications, shifting from larger to finer pitches. The following five years witnessed a stunning 3-digit growth rate with fine-pitch products used in more and more applications. In 2015, facing pressure from Chinese LED display manufacturers, whose compound annual growth rate exceeded 100%, manufacturers of traditional rear-projection and LCD equipment, such as Samsung, Panasonic, Planar, NEC, etc, also joined the fine pitch race. In 2016, Sony-made COB products caught market attention, especially after its Crystal Micro-LED screen, based on COB packaging technology, exhibited at CES in 2017. In the same year, the concept of mini-LED was raised and COB packaging further advanced to flip-chip technology. In 2017, IMD (integrated matrix device, also known as N-in-one) technology was introduced by NationStar with its pioneering product, the 4-in-1 IMD0.9, dividing the fine-pitch market into three major product lines: SMD, IMD, and COB.

 

2020 was expected to be the beginning of the Sub-1 mm Era, with a conservative estimate of 5% of overall fine-pitch sales volume. However, due to the worldwide outbreak of COVID-19, the Sub-1 mm Era may be postponed into 2021 or even 2022.

VISIONPI provides a full range of fine pixel pitch led wall solutions from 0.77 to 2.5mm.Get answers about Pricing, Specifications, Installation, and more.

flip chip cob led display

LED Cylinder Display

Are you looking for a display option that can provide a 360-degree viewing experience, high-definition images, and high transparency? If so, you might want to consider the cylinder LED screen, also known as the pillar LED screen or the LED column. This is a cylindrical display that can show immersive and dynamic content in various settings. In this article, we will explain what the cylinder LED screen is, how it works, its features, applications, how to choose the best quality, and the benefits of getting one.

What is a Cylinder LED Screen? A cylinder LED screen is a type of LED display that has a cylindrical shape and provides a 360-degree viewing angle. Unlike traditional flat screens, the cylinder LED screen can display content in all directions, making it ideal for applications where a wide viewing range is required. The cylinder LED screen can be customized to different diameters and heights, depending on the needs of the environment.

Application of the cylinder LED screen

Earlier, we have mentioned everything about this revolutionary technology. But it’s better to know about the places where you can install these screens to get pros. So, we can place these screens in:

Hotels Shopping centers Exhibition centers
Corporate offices Malls Airports
Universities LED pillar in bar Government buildings
Meeting halls Square And much more

It is a versatile display option that can be used in various environments, such as hotels, shopping centers, exhibition centers, corporate offices, airports, universities, government buildings, and meeting halls. It has several features that make it stand out from other display options, such as 360-degree viewing angle, high flexibility, easy installation, and high-definition images. It also has several benefits that make it worth getting, such as enhancing brand image, increasing sales and revenue, improving customer satisfaction and loyalty, and saving time and money. If you are looking for a display option that can provide you with these advantages, you should consider getting a cylinder LED screen from a reputable supplier.

led cylinder display manufacturer visionpi china

Precision-Engineered Die-Cast Aluminum Cabinets Cylinder LED Screens

In today’s dynamic display market, cylindrical LED screens are commonly constructed using steel cabinets or merely supported by frames with flexible modules attached via magnets. However, for applications requiring finer pixel pitches below 2mm, the precision in the manufacturing of the cabinet and frame becomes critical. Any minor deviation in dimensions can lead to visible unevenness across the LED screen, compromising the visual integrity and the display’s overall impact.

flexible led display die-casting aluminum

Die-casting Aluminum curve cabinet

 Our cylindrical LED display revolutionizes this approach by employing a CNC die-cast aluminum cabinet, which ensures unparalleled precision and uniformity. The die-casting process allows us to achieve a higher level of dimensional accuracy and stability, essential for maintaining perfect flatness in fine-pitch displays. This method not only enhances the structural integrity of the screen but also significantly reduces the potential for pixel misalignment caused by inconsistencies in cabinet dimensions.

Moreover, the use of aluminum offers superior thermal conductivity, which is vital for heat dissipation in high-density LED configurations, thereby extending the lifespan of the display. The robust construction of the die-cast aluminum cabinet also provides enhanced durability and resistance to physical stress, making it an ideal choice for various installation environments.

Incorporating advanced manufacturing techniques and materials, our LED cylindrical screen sets a new standard for precision and performance in the industry, offering a visually stunning, reliable, and long-lasting display solution.

cylinder-led-display-flexible-webp
led tree display visionpi

Outdoor LED Cylinder Display

outdoor led cylinder display high brigtness

Transparent LED Cylinder Display

The Cylinder series is a superior transparent LED display that can be custom designed to form a unique cylinder shaped display. The LED modules have up to 70% transparency, which means that they can show content on the screen while allowing the background to be seen.

Customized size is available to be perfect for different screnes.With its unbelievable light weight, you can choose an easy hanging installation. Otherwise you can turn the display into a smart signage with our modern design stand

LED display price increased? how ?

Since the beginning of the new year in 2021, major upstream raw material manufacturers in the LED display industry have successively issued price increase notices, leading to continuous increases in the purchase cost of LED raw materials (see details). As the upstream price increase surges all the way, the wildfire of price increase still burned to the downstream enterprises of the manufacturing, LED display companies such as Leyard, Unilumin, Absen have also issued price increase notices.

Leyard

On May 14, Leyard released the “Explanation on Global Price Increase of LED Display Products”. Leyard said that because of the increasingly tight supply of major upstream raw materials (semiconductor chips, lamp beads, PCB, etc.) and the significant increase in costs, Leyard, as the world’s largest LED display manufacturer, can still guarantee materials supply. but the increase has also led to a corresponding increase in the production and manufacturing costs of our LED display products.

To ensure R&D investment, product quality improvement and achieve this year’s production and operation goals, Leyard’s production bases will increase the ex-factory prices of products globally from May 17, 2021; it is expected to affect different series of Leyard products The market sales price of the country increased by 3-15%.

Unilumin

 It has to be said that the price increase of raw materials is a problem for the entire industry, and fierce competition makes it difficult to pass the cost completely to the end-user.

Hu Yan, Chief Financial Officer of Unilumin Technology Corporation, recently stated on the investor relations interactive platform that the price increase of upstream raw materials is a problem for the whole industry The company will balance the target value and adjust the price of some products appropriately to release part of the pressure.

Absen

Absen said that the company will adjust its sales price to customers based on market competition and company strategy.

In response to the increase in raw material prices, Absen stated at the investor interaction event on May 7 that the company adheres to the core values ​​of “integrity, gratitude, and responsibility”. uses its advantages to strengthen cooperation with upstream suppliers, and obtains strategic upstream suppliers. Support; At the same time, based on capacity forecasts and production planning, strategic stocking of key materials to ensure relatively low-cost material procurement and supply guarantee; In addition, the introduction of new materials, new technologies, and new equipment applications to improve efficiency and reduce overall cost.

 How much did the price go up?

Looking back at the origin, the price increase of various upstream raw materials, and the mismatch of various supporting devices and materials, have played a role in promoting the price increase of display products.

Previously, according to statistics from Experts, among the materials involved in display products, chips increased by 15-20%, driver ICs increased by 15-25%, metal materials increased by 30-40%, and PCB boards increased by 10- 20%, RGB devices increase by 4-8%, and display screens increase by 10-15%. (PS: As the price trend continues to rise, the price increase information may be lagging. Please refer to the latest announcements of the current companies.

How shoud we  deal with the price increase.

In my opinion, the current price is likely to be the lowest price for a long time in the future. Moreover, as long as the price goes up, it will be difficult to call back, because it is impossible to take back the US dollars issued by USA and the currency issued by other countries.

In addition, the major shipping companies have also joint to raised prices recently, I hope you can make reasonable order & shipping plans.

VMS Traffic LED Display

VMS LED SIGN FEATURES

Smart Traffic Solutions: Why Modern Cities Need Advanced LED Displays

In today’s fast-paced world, efficient traffic management is no longer optional—it’s a necessity. From bustling highways to urban intersections, dynamic LED traffic signs have become the backbone of intelligent transportation systems (ITS). At Visionpi, we specialize in designing durable, high-brightness LED displays that meet the evolving demands of modern infrastructure.

As a trusted traffic LED display manufacturer, we empower cities and transportation authorities to improve road safety, reduce congestion, and deliver real-time information to drivers. Let’s explore how our innovative solutions are redefining traffic management.

Table of Contents
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Applications of LED Traffic Signs
Our solutions are trusted in:

Highways: Variable speed limit signs (VSLS) adapt to traffic density, weather, or accidents.
Urban Areas: LED variable message signs (VMS) guide drivers through construction zones or events.
Tunnels & Bridges: High-contrast displays improve safety in low-light conditions.
Smart Cities: Integrate with IoT systems for adaptive traffic control.

traffic led sign high way vms
speed limit led sign high brightness dip
lane control led sign traffic sign
ETC LED SIGN DISPLAY

Revolutionizing Road Safety and Information Flow: The Advanced VMS LED Signs

In the ever-evolving world of digital communication, Variable Message Signs (VMS) have become a cornerstone in managing traffic and conveying important information to the public. Today, I’m excited to share insights into the latest advancements in VMS technology, particularly focusing on the state-of-the-art VMS LED signs that are setting new standards in the industry.

Key Features of Our Traffic LED Displays
1.Unmatched Visibility & Reliability

10,000 cd/m² Brightness: Ensure crisp readability in direct sunlight or heavy rain.
10,000+ Hours MTTF: Engineered for 24/7 operation with minimal downtime.
Wide Viewing Angles: Optimized for 70°–120° visibility to serve all lanes effectively.

3.Smart Traffic Management

Real-Time Updates: Sync with traffic monitoring systems to display speed limits, alerts, and detours instantly.
Customizable Configurations: Choose from pixel pitches (P16, P20, P31.25, etc.), sizes, and modules to fit any application.

dip p10 p16 p12 p20 vms led sign traffic
2.Weatherproof & Durable Design

IP67 Certification: Resistant to dust, water, and extreme temperatures (-30°C to 60°C).
Cold-Rolled Steel/Aluminum Cabinets: Built to withstand harsh outdoor environments.

double doors cabinets led sign for high way bridge

4.Energy Efficiency

Energy-Saving Modes: Reduce power consumption by up to 40% with intelligent brightness adjustment.
Solar-Ready Options: Ideal for remote installations without grid access.

common cathode energy saving dip traffic led sign for high way bridge vms
P6.67 VMS LED MODULES HIGH BRIGHTNESS LEN copy
P8 VMS TRAFFIC LED DIPSLAY MODULE copy
P10 OUTDOOR VMS TRAFFIC LED DISPLAY copy

 A New Era for Traffic Management and Communication

The advanced features of our VMS LED signs not only enhance road safety but also ensure that traffic information is communicated effectively and reliably. With these enhancements, our VMS signs are ideally suited for a variety of applications, from highways and city roads to events and construction sites. As we continue to innovate, our goal remains clear: to provide sophisticated, reliable, and easy-to-maintain solutions for dynamic traffic management and public communication needs.

In conclusion, the next-generation VMS LED signs are more than just traffic tools; they are integral components of modern infrastructure, designed to meet the high demands of today’s fast-paced world. With their robust construction, versatile functionality, and advanced technological features, these signs are set to transform how we manage traffic and convey information, making roads safer and information flow more efficient.

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