High Color Rendering COB LED Strip Production Process

High color rendering refers to the color rendering index (Ra) of an artificial light source being close to that of sunlight. The higher the color consistency of the measured light source when irradiating the same object as the standard light source, the greater the Ra value, resulting in better color rendering performance. With the rapid development of LED technology, high Ra products are now widely available. Many brands, including ZBL Lighting, have launched high color rendering index COB products to meet market demand.

ZBL Lighting's Highly Visible Finger COB Strip

ZBL Lighting's highly visible finger COB strip is a new type of high-brightness, high-visibility linear strip light. It features a beautiful appearance, high color consistency, and uniform, soft light. Additionally, it can achieve multi-level waterproofing. Using advanced flip chip packaging technology, it offers excellent heat dissipation, low heat, long life, and many other superior features.

Manufacturing Process of ZBL Lighting's Highly Visible Finger COB Strip

1. Solder Paste Application:

   • The PCB pads are coated with solder paste using an automatic brush solder paste machine. The uniformity and thickness of the solder paste coating determine the quality and flatness of the solder lug, which in turn affects the quality of the solder joints.

2. PCB Loading and Chip Programming:

   • The PCB board coated with solder paste is loaded onto a carrier. The solidification program for the chip is input and set via computer programming, with adjustments made to the solidification direction and height, and the electrode direction of the chip determined.

3. Small Batch Bonding Test:

   • A small batch bonding test is conducted to check the appearance quality of the bonded PCB. This step ensures the correct bonding direction, the presence of solder paste, and the accuracy of the bonding position before proceeding to the next process.

4. Reflow Soldering:

   • The bonded PCB and wafer are passed through reflow soldering, with the reflow temperature and speed set appropriately. This process ensures that the LED chip is firmly soldered. After soldering, an electrical test is conducted to verify that the LED chip emits light correctly.

5. Silica Gel and Phosphor Mixing:

   • After testing the LED chip, the silica gel and phosphor are mixed according to the color temperature, brightness, and other photoelectric parameters specified by the customer. The mixed glue is then defoamed.

6. Dispensing Process:

   • The circuit board is fixed onto the carrier of the dispensing machine for the dispensing process, a critical step for the success of the strip. After dispensing, the strip is baked in an oven.

7. Testing Photoelectric Parameters:

   • The baked strip is tested for its photoelectric parameters to ensure that the data meets customer requirements.

8. PCB Soldering and Assembly:

   • After soldering the 0.5m PCB board, the strips are connected into 5-10m lengths as per varying requirements, followed by back gluing and packaging the strip on a reel.

9. Mass Production:

   • A small batch test is conducted before transitioning to mass production to ensure no abnormalities.

Conclusion

The production process of ZBL Lighting's COB strip is intricate, with each step directly impacting the quality of the final product. By strictly adhering to each step, ZBL Lighting ensures the delivery of high-quality finished products. As a new type of linear lighting product, the highly visible finger COB strip currently may not have an absolute cost advantage over traditional linear lighting products. However, with continuous process improvements and the completion of the industrial chain, ZBL Lighting's COB strip lights are set to shine brightly in the market.

For more information on ZBL Lighting’s high color rendering COB strips and other products, visit ZBL Lighting's website.