How are COB LED light strips produced?

The manufacturing process for COB LED strips is carefully designed to ensure quality, efficiency and durability. Below is a revised outline reflecting the detailed stages involved：

Expanding Chips and Chip Bonding

Initially, high-quality LED chips are selected for efficiency, color consistency and longevity. These chips are then expanded and precisely bonded to a flexible PCB (printed circuit board), a substrate chosen for its durability and thermal conductivity. This direct mounting, known as chip bonding, allows the strip to be flexible and effectively dissipate heat.

Attaching Resistors to the FPCB

After chip mounting, resistors are attached to the FPCB using an automated process. These resistors are essential to regulating the current flowing through the LED chips, ensuring stable performance and preventing overheating.

Reflow Process

The assembled PCB now has the chips and resistors mounted, and next goes through the reflow process. This involves exposing the PCB to high temperatures of over 65 degrees Celsius, curing the connections and ensuring the components are securely bonded to the board.

Applying Phosphor Glue

A specially formulated phosphor glue mixture is formulated. This glue is critical to the encapsulation process, providing protection for the LED chips and resistors while improving the color quality and uniformity of the light.

Auto Gluing

Using an automatic glue applicator, the phosphor glue mixture is precisely dripped onto the surface of the chips and resistors. This step ensures uniform coverage and optimal encapsulation of each component.

Curing in an Oven

After glue application, the COB LED strips are placed in an oven. The curing process solidifies the glue, ensuring a secure encapsulation and that the components of the strip are well protected from physical and environmental factors.

Quality Control Testing

After cooling, the COB LED strips undergo rigorous quality control testing. This includes checking for consistent light output, color accuracy, and overall performance to ensure the strips meet the expected high standards.

Soldering and Winding

The strips are then soldered to length, typically 5 meters per roll or to customer specifications, ensuring easy installation and use. This step also includes adding adhesive backing and connectors for power and control.

Burn-in Testing and Final Quality Control

A burn-in test is performed to simulate long-term use, followed by a final quality control check. This thorough testing phase guarantees the reliability and longevity of the COB LED strips.

Packaging and Shipping

Finally, the COB LED strips are carefully packaged and ready for shipping, ready to illuminate a variety of spaces with their efficient, consistent and high-quality light output.

This detailed manufacturing process ensures that the COB LED flexible strips not only meet but even exceed performance and durability standards, providing superior lighting solutions for a wide range of applications.