COB LED Display Development 2024

Jan 26, 2024 | Technology | 0 comments

In 2023, the global LED market encountered significant hurdles, leading to a decrease in its market value to $12.608 billion. This decline was attributed to a combination of factors, including diminished demand from end markets, slow inventory turnover, and fierce competition over pricing. Despite these challenges, the LED industry is poised for a positive shift in 2024. According to insights from TrendForce, expectations are set for the market value to experience a growth, ascending to $13.003 billion, marking a 3% increase compared to the previous year.

One of the notable trends within the LED sector is the burgeoning demand for MiniLED (COB) video walls. This demand is being driven by top manufacturers such as Samsung, LG Electronics, Leyard, Unilumin, and Absen, indicating a robust growth trajectory in this segment.

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cob led display modules 2024 copy

The Evolution and Future Prospects of COB LED Display Technology in 2024

As we navigate through 2024, the landscape of LED display technology continues to be shaped significantly by the advancements and integration of Chip on Board (COB) technology. Since its emergence in 2012, COB technology has steadily transformed the direct-view LED display industry, offering unparalleled advancements in durability, resolution, and cost-effectiveness. This article delves into the current state of COB LED displays, their comparative advantages over traditional technologies, and anticipates future developments.

Core Attributes of COB LED Technology

COB LED technology epitomizes innovation by directly mounting RGB LED chips onto a Printed Circuit Board (PCB) and encapsulating them with a protective layer. This approach enhances the durability of LED displays, making them more resistant to physical impacts and environmental elements. A notable advancement facilitated by COB technology is the achievement of finer pixel pitches below 1.0mm, thereby enabling high-resolution displays with improved visual comfort and reduced eye strain.

Advantages Over Traditional Technologies

The transition towards COB technology reflects a response to the limitations faced by Surface Mounted Device (SMD) technology, especially as the demand for finer pixel pitches and higher resolutions grows. Unlike SMD and other competing technologies like IMD (Integrated Matrix Device) and MiP (Micro LED in Package), COB stands out for its superior pixel precision, robustness, and efficient heat management. These attributes contribute to its applicability across various sectors, including outdoor displays, which demand high durability and visual clarity.

IMD LED
MIP LED DISPLAY

COB LED Display Major Market Players

The Flip-chip COB LED Display sector is marked by intense competition, featuring a lineup of key companies battling for dominance. Leading the charge in this market are industry giants such as Samsung, LG, Sony. And some Chinese manufacturers :Hongli Zhihui Group Co., Ltd., LP Display, Shenzhen Visionpi Display Technology Co., Ltd., VMTC, Leyard Optoelectronic, CreateLED Electronics Co. Ltd., and Absen.

Samsung stands out as a pivotal force in this arena, recognized for its groundbreaking flip-chip COB LED display offerings and a robust global footprint. The brand’s market ascension is propelled by its dedication to research and development, alongside a continuous streak of product innovations. Samsung’s footprint in the flip-chip COB LED display domain is speculated to span several million dollars in market size.

Sony emerges as another formidable entity within the flip-chip COB LED display landscape. The brand’s reputation for delivering premium quality displays is complemented by its influential stance in the consumer electronics sector. Sony’s trajectory in this niche is powered by its commitment to enhancing visual experiences and versatility in application range. Its market presence in the flip-chip COB LED display sphere is also estimated to be several million dollars.

Leyard Optoelectronic, specializing in LED display solutions, showcases a robust lineup of flip-chip COB LED displays, contributing to its steady market progression. This growth is underpinned by a solid customer foundation and strategic alliances, positioning Leyard Optoelectronic’s market valuation within the flip-chip COB LED display sector at several million dollars.

While specific sales revenue details for these companies remain undisclosed, their significant roles in shaping the flip-chip COB LED display market are unmistakable. Entities like Samsung, Sony, and Leyard Optoelectronic have not only exhibited remarkable market evolution but are also poised for further expansion within this dynamic industry. The overall market valuation for flip-chip COB LED displays is projected to extend into several million dollars, with anticipations of continued advancement moving forward.

COB LED Display Solutions

500x50x0mm cob led screen

COB 500*500mm :P1.25 ;P1.56; P1.9

cob led screen common cathode

COB 600*337.5mm :P0.9 ;P1.25; P56 ;p1.875

640 indoor led display visionpi

COB 640x480mm :P1.25; P1.53; p1.86

flip chip cob led display 0.9 1.25 1.56

COB 600*337.5mm :P0.7 ; P0.9; P1.25

COB LED Display Modules/Tiles 

cob led modules 320x160mm

COB 320x160mm :P1.25; P1.53; p1.86

cob led display modules 1.25 1.56 0.9

COB 150*168.75mm :P0.7 ; P0.9; P1.25

Competitive Landscape and Cost Dynamics

2024 witnesses an evolving competitive landscape where COB technology’s inherent advantages are increasingly recognized. Although the initial capital investment in COB manufacturing is higher due to the need for specialized equipment, the technology’s scalability and the potential for lower long-term costs position it favorably against alternatives like IMD and MiP. Moreover, the adoption of virtual pixel technology enhances COB’s competitive edge by enabling higher resolutions at reduced costs, further solidifying its market position.

Future Directions and Market Prospects

The potential for COB LED displays is vast, with advancements in virtual pixel technology and continuous improvements in manufacturing processes promising to reduce costs further and enhance display quality. As the industry moves towards standardization akin to the LCD sector, COB technology is poised to become more accessible, potentially dominating the consumer market with high-quality, cost-effective LED displays.

Innovation remains at the core of COB’s future, with research and development focusing on refining the technology to achieve even lower pixel pitches, enhanced color consistency, and broader application across various display sizes. The integration of artificial intelligence and machine learning in the production processes could also pave the way for smarter, more efficient, and customizable display solutions.

Conclusion

As we look towards the future, COB LED technology continues to represent a promising path for the evolution of display technologies. Its superior attributes, coupled with the industry’s efforts towards cost reduction and technological refinement, are set to broaden its adoption. The advancements in 2024 are but a precursor to the transformative impact COB technology is expected to have on the LED display market, making it not just a part of the future but a defining force in shaping the next generation of display technologies.

Virtual Pixel COB LED Display

Dec 8, 2023 | Technology | 1 comment

What is Virtual Pixel Technology

Virtual Pixel Technology,also called dynamic pixel technology, is a technique that uses software algorithms to control the LED units in a display, so that each unit can contribute to the image of multiple pixels, thus increasing the resolution of the display by up to four times. It is different from the real pixel, where each unit corresponds to one pixel.

For example, a conference all-in-one machine that uses Virtual Pixel Technology can achieve a near 4K resolution with the same number of LED units as a 2K resolution machine. This improves the display quality and uniformity, while reducing the cost. It is a good choice for most users who want a high-definition display.

virtual pixel micro led display
virtual pixel cob compare with real pixel cob
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real pixel vs virtual pixels cob led display

Virtual pixel Micro COB LED Display 

Virtual Pixel Technology is also a special innovation for COB packaging, which allows the RGB LED chips to be arranged in any way, unlike the SMD small pitch display technology. 

Virtual pixel display technology is a new way of making Micro LED display products that are more cost-effective and high-resolution. It uses a different hardware and software design than the traditional RGB arrangement of LED chips. Instead, it adds a green LED chip to each pixel and uses a special algorithm to create four virtual pixels from one physical pixel. This reduces the pixel pitch by half and increases the resolution by four times, while using fewer LED chips and lowering the production cost. Virtual Pixel-COB display technology is an innovative and advanced solution.

Advantages of COB Virtual Pixel Technology

“Virtual pixel technology can make LED display screens have more than twice the visual clarity at almost the same cost. It is a magic tool for making LED display screens more affordable and high-quality!” Industry experts said that virtual pixel technology is very important for LED direct display, which is a type of display that becomes harder and more expensive to make as the pixel pitch gets smaller.

 

Take the most popular product,p1.56 136-inch all-in-one LED TV, for example. the 5 square meters LED display only has a 2K resolution, which is not enough for displaying 4K and other high-quality content. It also has a noticeable “pixelation” problem when viewed from a closer distance.

Virtual pixel technology can solve this problem by increasing the logical pixels in the resolution to 4K levels, with only a small increase in cost. This means that the screen can look much clearer and sharper, even though it is not using real physical 4K pixels. Virtual pixel technology is a cost-effective, reliable, and mature technology that can enhance the picture quality of LED direct display screens.

virtual pixel vs real pixel COB LED DISPLAY
virtual pixel cob led display
cob led display modules indoor common cathode
virtual pixel cob led screen copy

Dynamic Pixel COB LED Display

Disadvantages of Virtual pixel COB.

Dynamic pixel technology is not a perfect solution for Micro LED display products.

  • The inherent nature of pixel sharing in virtual pixel technology can lead to a degradation in display quality as the level of virtual enhancement increases. Observations from current display implementations indicate that, at closer viewing distances, the imagery may present a granular appearance, with static text particularly susceptible to displaying jagged edges. This has sparked some skepticism within the market, with critiques suggesting that virtual pixel products might mislead consumers. Such sentiments contribute to a lack of enthusiasm and support for the technology.

virtual pixel ,dynamic pixel cob led display text display
  • It does not use real physical pixels, so it may not work well in some situations. It also makes the chip work harder and faster, which may cause it to wear out sooner and decrease the life span.

Dynamic Pixel COB LED Display for Commercial Advertising

From an objective standpoint, virtual pixel technology does exhibit tangible limitations in image fidelity. Beyond a certain proximity, distinguishing between the effects of virtual and actual pixels becomes challenging for the observer. However, it’s important to consider the technology’s application context. Beyond specialized domains such as command and control centers or medical imaging, where precise visual detail is paramount, the demand for high-fidelity close-viewing experiences in settings like conference rooms and commercial spaces is relatively modest. These environments represent the niche where virtual pixel technology can indeed shine, leveraging its capabilities where they align with the practical requirements of the application.

Advantages of Virtual cob led display in commercial advertising 

Cost-Effectiveness: By requiring fewer physical pixels to achieve high resolutions, dynamic pixel COB LED displays significantly reduce manufacturing and operational costs. This makes them an economically viable option for businesses seeking high-quality advertising solutions without the high expense typically associated with large or high-resolution digital screens.

Energy Efficiency: Lower pixel density translates to less energy consumption, as fewer LEDs are needed to create an image. This energy efficiency not only reduces operational costs but also aligns with growing environmental sustainability goals among corporations.

Durability and Reliability: COB technology inherently offers greater protection for LED chips, as they are encapsulated directly on the board. This encapsulation provides superior resistance to impact, moisture, and dust, extending the lifespan of the display and ensuring consistent performance in various commercial settings.

Versatility and Visual Quality: Dynamic pixel COB LED displays can adapt to a wide range of commercial advertising needs, from outdoor billboards to indoor signage. They offer excellent visual quality, with vibrant colors and deep contrasts, making them highly effective for capturing consumer attention in competitive advertising environments.

Future Outlook

When we want to make display screens with very high resolution, like 4K or 8K, it becomes very hard and expensive to do. Also, when we look at the screens from a normal distance, like how we use our phones or watch TV, we cannot see the difference between more or less pixels. So, it does not make sense to keep adding more pixels to the screens. Instead, we should make products that look good and clear to our eyes. That is why virtual pixel technology is very popular. It makes the screens look better without using too many pixels.

The future of commercial advertising with dynamic pixel COB LED technology appears bright, with continuous advancements expected to further enhance resolution, cost-efficiency, and application versatility. As businesses increasingly seek innovative ways to engage with audiences, dynamic pixel COB LED displays stand out as a promising solution that balances cost, performance, and visual appeal. Their adaptability and efficiency position them as a preferred choice for advertisers aiming to make a significant impact in a crowded market.

cob led screen common cathode

Virtual Pitch COB LED Display Modules: Pixel pitch covers P0.4-P1.8 .

  •  600-1,200nits brightness
  •  18Bit grayscale
  •  up to100,000:1 contrast ratio
  •  HDR 10 supported
  •  120% NTSC color gamut
  •  7,680Hz refresh rate
  •  Extremely high protection performance
  • Single Module Calibration Technology
  • onforms to industry standards and specifications
  • Self-developed optical display technology greatly protects the eyes
  • Multi-scene applicability

What is Mip LED Display

Aug 12, 2023 | Technology | 4 comments

TrendForce research data shows that the LED small-pitch display screen market will reach US$4.232 billion in 2022, a growth of 12% compared with the same period of time. In addition, against the backdrop of the Russian-Ukrainian conflict and inflation, the overall demand for LED displays shrank last year, and display manufacturers have been more active in promoting ≤P1.0 mini/micro led screen.

MIP LED DISPLAY

History of LED display package technology:

The development of LED screen package technology from DIP to SMD to IMD to COB is a process of innovation and improvement in response to market demand and technological progress.

  • DIP stands for Dual In-line Package. It is the oldest and simplest packaging method, which involves inserting two pins of each LED chip into a plastic holder and soldering them to the PCB board. DIP packaging has the advantages of high brightness, good heat dissipation, and low cost, but it also has the disadvantages of large size, low resolution, and poor color uniformity. DIP packaging is mainly used for outdoor displays with large pixel pitches.
  • SMD stands for Surface Mounted Device. It is the most widely used packaging method in the current LED display industry, which involves fixing the LED chips on a bracket, connecting them with gold wires, and protecting them with epoxy resin. The SMD package can integrate red, green, and blue LED chips into one lamp bead, which can be soldered to the PCB board by reflow soldering. SMD packaging has the advantages of small size, large viewing angle, good color mixing, and high reliability, but it also has the disadvantages of low brightness, poor heat dissipation, and high cost. SMD packaging is mainly used for indoor displays with small pixel pitches.
  • IMD stands for Integrated Matrix Device. It is a relatively new packaging method that combines the advantages of SMD and COB. It uses surface mount technology to fix the LED chips on a metal substrate and then covers them with a transparent resin film. The IMD package can achieve a smaller pixel pitch than SMD and also has better protection, heat dissipation, and contrast than SMD. However, IMD packaging still faces some challenges such as high cost, complex processes, and low yield.
  • COB stands for Chip on Board. It is another emerging packaging method that directly mounts the LED chips on the PCB board and then encapsulates them with epoxy resin or silicone gel. The COB package can achieve a very small pixel pitch, even reaching the level of mini LED and micro LED. It also has excellent protection, heat dissipation, contrast, and reliability. However, COB packaging also has some drawbacks such as high cost, difficult repair, and color inconsistency
micro led display development histry

What is Mip LED Display

Mip Stands for “Micro LED in Package”, it is a new packaging technology based on Micro LED, which can be diced into small pieces package from a micro/mini led panel, and then perform separate packaging and testing, and becomes a Mip Modules via SMT ,thereby improving the yield and reducing the cost.

mip led screen production process
MIP PCB BOARD MICRO LED
MIP LED SMT PROCESS
MIP HOB PROCESS

COB’ Challenges 

COB LED display can achieve a very small pixel pitch, even reaching the level of mini LED and micro LED. It also has excellent protection, heat dissipation, contrast, and reliability. However, COB LED display also faces some challenges

Maintenance

Difficult to repair a single lamp For COB lamps, single-lamp maintenance is relatively challenging. One of the biggest problems is that when repairing a lamp, the surrounding area will be affected by the welding torch, and a ring will appear around the lamp.

Color consistency

LED displays with COB are prone to modular color differences. When the scale of COB production is not large enough, the cost of chip and color binning is high, and the finished display screen needs to be calibrated to improve the display consistency.

High Manufacturing Cost

COB packaging works on a large board that has up to 1024 led chips. which means all led chips must be properly bonded on the board, This brings a big challenge to the Mass transfer device and craftsmanship, ” Compared with SMD, if one single lamp is broken during SMD packing, it only needs to replace one lamp,

However, after the packaging of 1024 lamps in the COB package is completed, a test must be carried out, and the glue can only be sealed after all the lamps are confirmed to have no problems. How to ensure that all the 1024 lamps on the whole board are intact, the one-time pass rate is a very big challenge.

Finished product pass rate is a challenge For COB module production, after the chips are sealed, the IC drive device must undergo a reflow soldering process. How to ensure that the lamp surface will not be damaged by the high temperature of 240 degrees in the furnace during the reflow soldering process is another big challenge.

Visionpi’s patented mass transfer technique is a novel approach for transferring millions of micro LED chips accurately. With the mass transfer technology, the UPH of micro & mini LED displays is more than 2.5KK, and the mass production yield rate is more than 99.999%.

flip chip cob led display 0.9 1.25 1.56

FLIP-CHIP COB

sony samsung cob vs mip

Cost of Mip 

In the printing and mounting process of COB, the higher pixel density of micro led and smaller soldering pin of the Mini LED chip bring big challenges to the SMT stencil and die-bonding equipment.

MIP technology can avoid the problem of poor quality of the whole panel due to a few led chip’ failures, and greatly reduce the cost of rework. In addition, MIP is compatible with traditional SMT production equipment and mature SMD technology and lowers the cost of transfer.

mini led display
cob vs mip
mip led screen mini led wall

PROTECTION cob png

COB VS Mip

 Stability: COB packaged LED displays have higher quality because they do not use brackets, but use silicone or conductive glue to directly paste the chips on the substrate, and then perform wire bonding to achieve electrical connection. MIP packaging is to interconnect the chip electrodes and the substrate electrodes through an interconnect bracket after the LED chip electrodes are made.

Manufacturing Cost:   the P1.2 Mip led screen is comparable in cost to the COB 1.2 led screen. when the dot pitch is less than P1.2, and the comprehensive manufacturing cost of MIP technology is lower than COB technology and SMD technology.

kinetic led screen

May 10, 2023 | General | 0 comments

Elevating Visual Communication with Kinetic LED Displays

In the realm of visual technology, the fusion of movement with cutting-edge LED screens is not just a trend but a transformative evolution, especially evident in the realm of trade shows and events. This innovative approach is exemplified through the marvels of kinetic LED displays, a technology that redefines the boundaries of digital engagement and storytelling. Among these pioneering solutions, the LG LED Display showcased at ISE 2024 in Barcelona stands as a paragon, blending the artistry of motion with the clarity of high-definition visuals.

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The Marvelous Kinetic LED Display Technology

Kinetic LED displays, such as those showcased by LG at ISE 2024, represent the pinnacle of digital innovation. These displays are characterized by their dynamic ability to move, reshape, and transform in real-time, harmonizing with the media content they exhibit. The LG display, with its 1.9mm pixel pitch, not only delivers stunning visual clarity but also engages in a physical ballet of screens that captivate and mesmerize audiences. With dimensions that stretch to 3.5 meters in width and soar over 6.1 meters in height, this kinetic masterpiece ensures that messages are not merely seen but experienced.

Kinetic LED Display Features

 Dynamic Adaptability and Diverse Applications

The adaptability of kinetic LED displays is one of their most compelling features. Whether it’s the bustling ambiance of a shopping mall, the formal setting of an auditorium, or the openness of an outdoor space, these displays offer unparalleled engagement. This versatility makes them a formidable tool for advertising, brand promotion, and creating immersive experiences that resonate deeply with audiences.

 Key Innovations in Kinetic LED Displays

The exploration of kinetic LED technology reveals a range of innovative solutions designed to capture and hold attention:

1. Rotating Tower: This design integrates three engine motors controlling around nine screens to form a towering display. The screens’ movement, perfectly synchronized with the video content, creates a captivating visual narrative.

spinning led display tower screen

2. 3D Dynamic LED Wall: Composed of hundreds of LED modules, this wall can project up to 5000 display units that move forward and back, aligning with the on-screen visuals. This feature offers infinite creative possibilities to present a mesmerizing 3D visual effect.

spinning led display screen copy

3. Rotating Waypoint: Similar to the rotating tower but with ten screens arranged around five engine motors, this structure combines technology and artistry to guide and entertain.

rotating led display indoor

4. Sliding Screen: This setup merges LED display technology with a sliding mechanism, ensuring a perfect match between screen movement and video content, offering a fluid and engaging visual experience.

5. Rotating Screen: Incorporating a rotating mechanism with an LED screen, this feature provides a dynamic visual experience that keeps the content fresh and engaging.

spinning led display screen

6.Spinning LED Screen: Incorporating a rotating mechanism with an double sided LED screen, this feature provides a seamlesss 360 degree visual experience that keeps the content fresh and engaging.

spinning led display screen double sided

Creating a New Era of Visual Storytelling

The synergy of kinetic elements, engaging content, and dynamic sound forms the cornerstone of the kinetic LED display experience. This integration goes beyond traditional advertising, forging memorable connections with the audience. As visual technology continues to evolve, kinetic LED displays stand at the forefront, offering a limitless canvas for creativity and innovation.

In a world where capturing attention is more challenging than ever, kinetic LED technology offers a captivating solution. Whether for commercial spaces, event venues, or public installations, this technology promises to revolutionize the way we engage with digital content, making every message not just seen but truly experienced. Through the seamless integration of movement, visuals, and sound, kinetic LED displays herald a new era of visual communication, where technology and creativity converge to tell stories that are unforgettable.

COB Rental LED Display

Apr 12, 2023 | General | 0 comments

COB packing technology 

COB technology is a new and advanced way of making LED displays for outdoor use. It improves the performance and pitch of the displays, making them brighter, more uniform, and more durable. However, COB technology is also more costly and difficult to produce at the moment. which means that it is only suitable for high-end commercial display markets. COB technology is gradually gaining more popularity in the market, its ‘market share was less than 10% a few years ago.

COB vs IMD LED DISPLAY
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Outdoor COB LED Display.

COB (Chip on Board) is a kind of LED display packaging technology. LED light-emitting chips are directly bonded to the module board with high precision and connected to driver components on the module board through special media for overall protection of the light-emitting surface. COB packaging  eliminates  the two key procedures  of  turning LED chips  into lamp beads and reflow soldering as compared to standard SMD packaging. 
outdoor high brightness cob led display p1.9

High brightness and color uniformity

COB LED display can achieve a brightness of 3500nit/m2 for outdoor applications. and a color gamut of more than 115% NTSC  The uniform phosphor coating on the array of chips ensures consistent color performance across the display

outdoor cob led display brigthness

Wide viewing angle and high contrast

COB LED display has a viewing angle of up to 170 degrees, which means it can be seen clearly from different angles  The dark surface of the flip-chip COB display also enhances the contrast ratio and reduces the glare. The compact size of the COB LED also allows for more flexibility in designing the display shape and size.

outdoor cob wide viewing angle 170outdoor cob wide viewing angle 170
outdoor cob wide viewing angle 170outdoor cob wide viewing angle 170

Superb Reliability

Completely sealed with epoxy resin to cure the light-emitting chip, COB LED will be anti-shock, anti-collision, moisture-proof, dust-proof, waterproof, and so there will be no problem caused by transportation and installation

cob outdoor led display dust proof
outdoor cob led display waterproof 1.9
anti bump cob outdoor led display screen

Outdoor COB Rental LED Display

Pixel pitch covers P0.4-P1.8 to meet different requirements of users

  •  3500 nits brightness
  •  16 Bit grayscale
  •  up to 10000:1 contrast ratio
  •  HDR 10 supported
  •  120% NTSC color gamut
  •  38400Hz refresh rate
  •  Extremely high protection performance
  • Single Module Calibration Technology
  • onforms to industry standards and specifications
  • Self-developed optical display technology greatly protects the eyes
  • Super wide viewing angle 170
cob outdoor led display cabinet

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