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In the past two years, C0B small-pitch display technology has risen rapidly and has become a popular technology in the field of LED small-pitch display. Compared with traditional Sm surface-mount LED screens, C0B small-pitch display technology shows significant differences. C0B small-pitch technology can reduce the dot pitch to less than 1.0mm, while ensuring the stability of the display and avoiding the occurrence of light-off. This technology has stronger collision resistance, so it greatly improves the resolution of small-pitch LED products and leads LED displays into a clearer visual field. At the same time, the limitations of traditional small-pitch LED technology are becoming increasingly prominent.
At present, S1D surface-mount small-pitch display technology is the mainstream LED display technology widely used in the market. It is mainly built on SID discrete device technology. However, as the dot pitch continues to shrink, S1D surface-mount technology has gradually exposed some technical bottlenecks and limitations.
First of all, the limitation of dot pitch is a major problem. At present, the dot pitch of most small-pitch LED displays using Sm surface-mount technology is usually between P1.2 and P2.0, and very few can achieve below P1.0. Even if some products barely meet this standard, their stability is often unsatisfactory, resulting in frequent light-off.
Against this background, C0B small-pitch display technology has become a popular technology in the field of LED small-pitch in the past two years, which is significantly different from the traditional Sm surface-mount LED screen. C0B small-pitch technology can reduce the dot pitch to less than 1.0mm, while ensuring the stability of the display and avoiding the occurrence of light-off. This technology has stronger collision resistance, so it greatly improves the resolution of small-pitch LED products and leads LED displays into a clearer visual field. At the same time, the limitations of traditional small-pitch LED technology are becoming increasingly prominent.
At present, S1D surface-mount small-pitch display technology is the mainstream LED display technology widely used in the market. It is mainly built on SID discrete device technology. However, as the dot pitch continues to shrink, S1D surface-mount technology has gradually exposed some technical bottlenecks and limitations.
First, the limitation of dot pitch is a major problem. At present, the dot pitch of most small-pitch LED display screens using Sm surface mount technology is usually between P1.2 and P2.0, and very few can achieve below P1.0. Even if some products barely meet this standard, their stability is often unsatisfactory, resulting in frequent light failure.
Secondly, C0B small-pitch technology came into being to solve the above problems. C0B small-pitch technology is to directly fix the LED chip on the PCB board and use glue to encapsulate the LED chip. The advantages of this technical method are mainly reflected in the following aspects:
First, the dot pitch is smaller. The dot pitch of the current mainstream Sm packaged small-pitch display screen is usually between P1.2 and P2.0, and it becomes very difficult to further reduce the dot pitch. The C0B small-pitch display technology can achieve a dot pitch close to P0.5, making the dot pitch smaller, meeting the market's demand for higher resolution.
Secondly, C0B small-pitch technology has stronger anti-collision and collision resistance. The traditional small-pitch LED display first fixes the LED chip and solders the wires on the bracket, then encapsulates it with resin, and solders the SmD device on the PCB board through reflow soldering. Due to the small size of the pad, the lamp beads are easily knocked off during the reflow soldering process, and the protection performance is poor. The C0B small-pitch technology directly fixes the LED chip on the PCB board and uses glue to encapsulate it, so it can better prevent external force damage and has strong protection capabilities.
Finally, the stability of the C0B small-pitch technology is better. The C0B small-pitch technology cancels the LED bracket and removes the link of connecting the PCB board through reflow soldering, and directly solders the LED chip on the PCB board. Therefore, it has higher reliability and greatly reduces the lamp drop rate. It can be said that the C0B small-pitch technology is a new generation of small-pitch LED display technology, which mainly solves the lamp drop problem of traditional LED display screens and further reduces the dot pitch. With the continuous improvement of users' requirements for dot pitch, the C0B small-pitch technology will undoubtedly become the mainstream LED display technology in the future market.