Table of Contents
- Features of COB Technology
- Advantages and Disadvantages of GOB
- How to Choose the Right Technology
Every new technology in LED display manufacturing aims to eliminate the shortcomings of previous solutions. COB and GOB LEDs are enhanced versions of traditional SMD LEDs. They significantly outperform their predecessors, offering longer lifespans due to a special mounting method. Additionally, they improve image quality and enable higher picture detail.
In this article, we will explore the features of COB and GOB technologies: how they differ from other configurations and from each other. You’ll also learn about the benefits of these types of LED panels and their potential drawbacks.
Features of COB Technology
The full name of the technology is Chip on Board. It involves “growing” LED chips directly onto the circuit board, enabling very tight pixel spacing.
The LED crystals are mounted without casings or ceramic substrates, allowing them to be placed extremely close together. Compared to standard SMD (Surface Mount Device) technology, COB allows significantly more LEDs to be packed into the same surface area. This results in greater pixel uniformity and delivers a sharper, more detailed image to the viewer.
Manufacturers reduce pixel pitch each year to achieve higher resolution on smaller screens. When using standard SMD LED matrices for this purpose, numerous issues arose: LED burnout due to overheating, solder joint damage during installation and transportation (due to small solder contact area), and contact oxidation. COB technology helps resolve these problems.
This mounting method reduces heat generation and power consumption, while also protecting LEDs from damage thanks to a transparent protective compound coating. This is especially important for very small light elements. Furthermore, COB simplifies LED arrangement on the board, allowing the use of tiny pixels without soldering complications.
Advantages and Disadvantages of GOB
The abbreviation GOB stands for Glue on Board, which reflects the essence of the technology. Unlike COB, LEDs here are mounted using the standard surface-mount technique, similar to SMD. After soldering the LED components, the modules are coated with a special polymer compound (epoxy adhesive), followed by a transparent protective layer.
GOB represents improved SMD LEDs with enhanced resistance to external factors. The strong adhesive securely fixes LED components onto the board and protects them from moisture, dust, and mechanical damage.
The epoxy resin enables the use of smaller LEDs, thus increasing screen resolution and improving image detail.
How to Choose the Right Technology
Both technologies deliver excellent mechanical durability and high image quality. If you require superior image detail, we recommend COB technology, as it allows the use of the smallest LEDs with minimal pixel pitch.
Despite their high resistance to external influences, COB and GOB LED panels are not suitable for outdoor use. They are designed specifically for indoor displays.
To learn more about LED displays and receive expert consultation, contact Stokled Distribution. We specialize in manufacturing LED screens and understand all the nuances of the technologies involved.
For any questions all type led screen, our managers are available at +49 (1520) 720-07-27 or hello@ledscreenmedia.eu
