Introduction

In today’s era, LED displays have been integrated into all aspects of our lives, from colorful billboards to smart devices in the home, they are everywhere. Naturally, everyone has higher expectations for the display effect and quality of the LED screen. In the pursuit of better visual enjoyment of the journey, the traditional LED packaging technology,Like DIP and SMD, although the contribution is indispensable, but in some special application scenarios, they seem to be a little weak.

It is based on this background that GOB technology came into being. It is like an upgrade of SMD packaging technology, but it is still SMD packaging technology in essence. Imagine,It’s like putting on a tailor-made “coat” for your screen, which not only protects the internal precision components, but also makes the display effect leap to a new level.

If SMD technology is like something made by hand, then COB Technology is like a piece of art printed in advanced 3D. It “planted” LED lights directly on the screen,This makes the screen thinner and lighter, does not easily enter gray, and is more durable.

What is COB (Chip on Board)?

In the COB(Chip-on-Board)LED manufacturing process, the light source Chip is directly integrated on the substrate, realizing printing-like precision assembly, which is very different from traditional SMD(Surface Mount Device) or Flip-Chip technology, which relies on soldering means or additional fixing measures to connect to the circuit Board.

Key benefits of COB include:

Surface leveling and visual optimization :
COB technology not only achieves the ultimate leveling of the surface, but also significantly improves the optical uniformity, reduces the light spot, and improves the viewing comfort and image fineness by directly attaching the LED chip to the circuit board and encapsulating it with resin.

High resolution/definition:
Its unique high-density integration capability-the ability to closely arrange multiple tiny light-emitting elements, greatly reducing the distance between pixels (I. E. Pixel pitch), directly promoting the display resolution Significantly improved.

Ultra-thin design and high integration:
Because the LED chip is directly packaged on the circuit board,Without the traditional SMD(Surface Mount Device) or Flip-Chip technology used in the package shell, which greatly reduces the height of the components, so that the final product can achieve ultra-thin design, which is the pursuit of extreme thin modern electronic product design is particularly important.

Stronger reliability and durability:
Thanks to the tight packaging structure and natural protection layer, the COB display can effectively resist environmental factors such as moisture and dust, and improve the stability and life. This has demonstrated a significant competitive advantage in the field of professional displays, especially in the high-end market with stringent image quality requirements,This is a significant advantage for displays that require close viewing or devices that operate in environments.

Efficient energy utilization:
COB technology achieves higher light efficiency utilization by reducing the loss of light during transmission. The light does not need to pass through the lens or the packaging material,Directly emitted from the chip, the absorption and scattering of light are reduced, and the overall luminous efficiency and brightness uniformity are improved. This means that under the same power, the COB display can provide a brighter and uniform visual experience, while also reducing energy consumption, in line with the requirements of the era of green energy saving.

Innovation doesn’t stop there,COB Technology continues to push the boundaries of miniaturization and high-density integration. With the development of Mini LED and Micro LED technology, COB has become the key technical support for these ultra-fine displays. It has led to a dramatic increase in the number of pixels per inch (PPI), opening up new possibilities in areas such as virtual reality (VR), augmented reality (AR) and ultra-high-definition displays,Users can enjoy an unprecedented immersive visual feast.

What is GOB (Glue on Board)?

GOB technology greatly improves the durability of LED displays. Traditional LED display is the small lamp beads (surface mount diode) soldered to the circuit board. The GOB technology is different. It is an additional layer of epoxy resin on these small lamp beads to make each small piece (module) of the display smooth and seamless, which not only improves the durability of the LED display,It also significantly enhances its protective properties.

Key benefits of GOB include:

More durable:
GOB adds a protective film on the LED, which can be moisture-proof, dust-proof, and impact-resistant, so that the lamp has a longer life and does not need to be maintained frequently.

Good visual effect:
This protective film ensures the uniformity of color and brightness,The image is soft and not dazzling.

Surface Smooth and Safe:
The GOB layer makes the screen surface smooth and seamless, reduces pixel damage and reflection, and also protects the LED.

Waterproof and dustproof:
GOB screen is not afraid of water or ash, suitable for outdoor and factory places with harsh environment.

Wide viewing angle:
It is clear from any angle and the color is positive, especially suitable for public display and store use.

Easy to clean, high protection level:
GOB display is easy to clean, with protection level identification, can resist the impact of different environments,It’s strong.

Differences Between GOB and COB LED Displays

Manufacturing Processes:

GOB (Glue on Board):
This technology involves coating LED modules with a protective special glue layer. The transparent protective layer protects the module from environmental factors such as moisture, dust, and physical impacts.

COB (Chip on Board):
In COB technology, multiple LED chips are directly mounted onto the circuit board and encapsulated together. This design minimizes the space between the chips, for a more compact and efficient light source.

Durability:

GOB:
GOB displays are known for their rugged protective coating that can withstand harsh environments and reduce the risk of damage from environmental factors and physical contact. Ideal for applications where the display may be exposed to rough handling or harsh conditions.

COB:
COB monitors feature a rugged chip structure with excellent heat dissipation. This design minimizes thermal resistance, prevents overheating and extends the life of the monitor.

Brightness and Color Uniformity:

GOB:
The protective layer of glue will cause a slight attenuation of brightness, and due to the thickness of the glue there may be a slight difference, resulting in a slightly poorer color consistency. It is not as fine as COB in terms of ultra-high resolution requirements.

COB:
COB displays typically have higher brightness and color uniformity due to the tighter alignment of the LED chips. Ideal for applications requiring precise color accuracy and high brightness.

Applications and Flexibility

GOB:
Designed for outdoor and harsh environments, it provides excellent protection from the elements. The protective layer ensures durability in wet, dusty or high-traffic areas. Ideal for outdoor advertising, rental markets and any application requiring a rugged display.

COB:
For high-resolution indoor displays that require clear, detailed visuals Ideal for control rooms, broadcast studios and environments where close viewing is often required. This design ensures superior image quality and performance in controlled indoor environments.

What types of LED displays are suitable for COB technology?

Application cases in the field of advertising and media

COB LED displays are often found in large commercial complexes, pedestrian streets, shopping centers and other places.
They are not only used to broadcast brand advertisements, product promotions and other information, but also through dynamic pictures, high-definition video and other forms to bring the audience a better shopping experience.

Innovative applications in smart cities

In the construction of smart cities, COB LED displays are playing an increasingly important role as a carrier for information display and interaction. In public squares, parks, transportation hubs, and other places, COB LED displays can release city news, traffic information, weather forecasts, and other content in real time to provide citizens with convenient services.

Home Cinema & Multimedia Displays:

COB MicroLED displays bring cinema-quality picture quality to home theater enthusiasts with vibrant colors, high resolution and rich contrast, allowing viewers to immerse themselves in their favorite movies and multimedia content, turning any room into a personal theater.

Energy-Efficient Commercial Displays:

COB MicroLED displays are an energy-efficient solution for sustainability-conscious businesses. These displays use less power than traditional SMD displays, helping to reduce energy costs.

Studio & Broadcast Displays:

Photography and film production studios benefit greatly from COB MicroLED displays due to their precise color reproduction and fine pixel pitches. These attributes ensure accurate content creation and editing, which is critical for maintaining high-quality broadcast standards.

Presentations & Conference Displays:

In corporate environments, COB MicroLED displays provide clear, vivid visuals that enhance communication and collaboration. In any meeting place, these displays make content more impactful and engaging, facilitating clearer, more effective communication.

Art Galleries, Museums & Immersive Spaces:

COB MicroLED displays are ideal for art galleries and museums, offering the ability to showcase intricate details and vibrant colors in artwork and exhibits. Their capability to handle close viewing distances makes them perfect for immersive spaces where captivating visual experiences are key.

Extended Reality (XR) Applications:

In XR applications, including augmented reality (AR), virtual reality (VR), and mixed reality (MR), COB MicroLED displays excel with their sharp, accurate visuals. These features enhance realism and immersion, making them a top choice for developers and users seeking high-quality XR experiences.

What types of LED displays are suitable for GOB technology?

Small Pitch GOB LED Display

Small pitch is now the mainstream of indoor displays. But the biggest problem with the use of small-pitch displays is that it is very easy to damage the tiny LED. Because the SMD lamp is too small and the soldering pad is very small, a little force will crash the lamp, especially the LEDs located on the edge of the cabinet and the four corners that are the hardest-hit areas during the moving and installation. Once the lamp is broken, maintenance is very difficult and the cost is high.

GOB technology perfectly solves this problem. SMD LEDs in any position will no longer be knocked off. At the same time, our mature GOB technology can guarantee perfect flatness and seamlessness.

Rental GOB LED Screen

As we all know, the rental display installed on the stage requires frequent installation, disassembly, packaging, and transportation, and this process is repeated continuously. As a result, the LED light is easily damaged by accident. Even if the best quality and most expensive LED lamps are used, this situation is inevitable, so for some LED display rental service providers, they have to arrange a budget to invest in the maintenance of the display module.

When using GOB technology, the rental display screen no longer makes you worry about the dead pixels, and at the same time saves money.

Floor GOB LED Screen

In the conventional floor tile display, a layer of the acrylic cover is usually added to the module to protect the lamp surface from being stepped on. GOB technology can replace the acrylic cover, and it has a better light transmission and better visual effect.

GOB technology allows ordinary LED display screens to be placed on the ground and used as a floor video wall by adding simple structures. At the same time, it has the functions of waterproof and dustproof.

Transparent GOB LED Display

Transparent LED displays are becoming more and more popular in commercial applications, such as retail stores and shopping malls, and club scenes. In order to obtain high transparency while ensuring a high resolution, the PCB of the transparent display screen is very narrow, which makes the lamp and PCB very fragile and easy to damage. GOB provides protection for the entire hollow module.

Flexible GOB LED Display

Flexible LED modules are now widely used to make LED video cylinders of various diameters, usually fixed installations. Although the screen does not need to be moved after installation, because the soft module itself is very soft and can be bent 360 degrees, if GOB is used on the soft modules, the reliability of the screen can also be greatly increased. In addition, the flexible GOB screen is waterproof, moisture-proof, and scratch-proof. This provides customers one more choice to build a robust curved screen.

Irregular Shape GOB LED Display

Irregularly shaped LED displays are widely used in clubs, exhibition halls, museums, etc. They are usually constructed to create special shapes to create a special atmosphere or build a brand image. These places are usually crowded with people, especially clubs.

Under the stimulation of music, people like to touch the screen to feel the dynamic video. And even accidentally spill drinks on the display. If it is a traditional indoor screen, it is easy to cause a short-circuit, moisture, and eventually cause damage to the screen. And by adding a layer of GOB film on the surface of the display, the reliability of the display can be greatly improved, and there is no more worry.

Conclusion

In conclusion, while both GOB and COB LED displays have their advantages, COB displays stand out for their superior performance, efficiency, and alignment with market trends. As you consider your next LED display investment, focusing on COB technology can provide a future-proof solution that meets the needs of modern applications.

Understanding the differences, advantages and disadvantages of GOBs and COBs will enable you to choose the LED display that best meets your individual needs, ensuring the value and sustainability of your investment.

Whether you want to choose GOB or COB Led Screen, you can find the right solution at OneDisplay, your reliable partner.