COB packaging technology Innovating the field of LED display screens and creating a new favorite in the market!
In the LED display market, DIP and SMD packaging technologies have long dominated. However, with the continuous advancement of technology and the increasing diversification of market demand, these two traditional packaging technologies have gradually exposed problems that are difficult to break through. In order to seek new breakthroughs, domestic LED display manufacturers have invested in research and development, and finally introduced COB packaging technology to the market. The emergence of this technology has undoubtedly brought new development opportunities to the LED display industry.
COB packaging technology, as an advanced packaging technology that fixes the LED light-emitting chip on the PCB substrate and then attaches glue to the whole, has the characteristics of moisture-proof, anti-static, and anti-collision, which greatly reduces the phenomenon of dead lights and becomes a suitable technical route for the mini era.
Its core is to directly adhere the bare chip to the PCB board, realize the electrical connection between the chip and the substrate through wire bonding technology, and finally use resin glue to encapsulate the chip and leads to form a complete display unit. Compared with traditional SMD packaging, COB packaging technology eliminates the need for manufacturing and welding of lamp beads, greatly simplifying the packaging process, and at the same time, the heat dissipation performance is also significantly improved.
COB packaging technology has significant advantages and characteristics
1. Ultra-light and thin: PCB boards of different thicknesses can be used according to customer needs, reducing the weight to 1/3 of traditional products, significantly reducing structural, transportation and engineering costs.
2. Anti-collision and anti-compression: The COB display screen encapsulates the LED chip in the concave position of the PCB board, encapsulates and solidifies it with epoxy resin glue, and the surface of the lamp point is raised into a raised surface, which is smooth and hard, and is resistant to collision and wear.
3. Strong heat dissipation capability: The heat of the wick is quickly transferred out through the copper on the PCB board, which hardly causes serious light attenuation and greatly prolongs the service life.
4. Wear-resistant and easy to clean: The screen surface is smooth and hard, resistant to impact and wear. If bad points appear, they can be repaired point by point, and it is easy to clean.
5. Excellent all-weather properties: It adopts triple protection treatment, with outstanding effects of waterproofing, moisture, corrosion, dust, static electricity, oxidation and ultraviolet rays, meeting all-weather working conditions.
Now, many LED display manufacturers have applied this technology to small-pitch LED displays, such as P0.78-P1.87 COB small-pitch LED display products. This product adopts a magnetic module design and can be installed on the wall, saving space and ensuring worry-free operation of the large screen. At the same time, it has a point-by-point correction function to ensure the consistency of the display, and the high refresh rate, high gray and high contrast make the display effect impeccable.
COB technology products: market application cases
1. Security monitoring and command and dispatch
In the field of command and control centers, COB displays have become the first choice for many large enterprises and government agencies due to their high definition, high stability and reliability. For example, the inverted COB ultra-high-definition small-pitch display large screen used in the Three Gorges Group Command Center not only improves the clarity of information display, but also greatly enhances the efficiency of monitoring and dispatching and comprehensive water environment management. This case fully demonstrates the application capability and value of COB technology in complex environments.
2. Monitoring management and commercial display
In the field of commercial advertising, the high brightness and high contrast of COB display screens make them an ideal choice for outdoor billboards and indoor large-screen advertising. For example, COB ultra-high-definition large-screen systems are widely used in the monitoring center of Guangdong Transportation Group, which not only improves the operation monitoring capabilities of the monitoring center, but also attracts a lot of attention through its excellent display effect, enhancing the dissemination effect of advertising. In addition, the smart display center built by the global automotive giant General Motors also uses COB small-pitch LED display screens based on flip-chip COB packaging technology, realizing the visual management of business operation information and the comprehensive display of multiple business applications.
3.Smart conferences and public places
In the field of smart conferences and education and training, the high-definition display and delicate picture quality of COB displays have been widely praised. For example, the quantum dot COB all-in-one machine uses advanced nanopore quantum dot crystal technology to achieve lower screen temperature and higher display efficiency, providing a more comfortable and efficient visual experience for smart conferences and schools. At the same time, the 320×160 standard module COB display has become the preferred display solution for many public scenes with its excellent performance and wide applicability.
4. Hotel station and rail transit
In the field of rail transit, COB display screens have also demonstrated their unique advantages. For example, the display screens on Shenzhen Metro Line 14 have made full use of small-pitch LED display technology and fully flip-chip COB packaged LED display screens. The COB display screens in this project not only have ultra-high-definition image quality and high protection performance, but also can efficiently dissipate heat and maintain long-term operation, providing passengers with a safer and more comfortable riding environment.
COB display technology development trend
With the continuous advancement of technology and the continuous expansion of the market, COB technology will be applied and developed in more fields. In the future, we can expect the following trends:
1. Continuous technological innovation: COB technology will continue to make breakthroughs in packaging technology, display effects, heat dissipation performance, etc., further improving product performance and stability.
2.Diversified application scenarios: In addition to existing application areas, COB technology will gradually penetrate into emerging fields such as smart home, smart medical care, smart city, etc., bringing more convenience and surprises to people’s lives.
3. Market demand continues to grow: As people’s demand for high-definition and high-stability displays continues to increase, the market demand for COB technology will continue to grow, bringing more business opportunities and development space to related companies.
In short, as one of the important innovations in the LED display industry, COB technology is leading the development direction of the industry with its unique advantages and broad application prospects. We have reason to believe that in the future, COB technology will bring us more wonderful visual feasts and a more convenient and efficient lifestyle.
The emergence of COB packaging technology has undoubtedly brought new development opportunities to the LED display industry. Its advantages such as ultra-lightness, anti-collision and pressure resistance, strong heat dissipation, wear resistance and easy cleaning, as well as excellent all-weather properties make COB small-pitch LED display products very popular in the market. In the future, with the continuous advancement of technology and the growing market demand, COB packaging technology is expected to play a greater role in the field of LED displays and create more market value.
