2023 Sanan Optoelectronics LED Chip Inspection Platform: Bozhida Precision Motion Solutions

Project Overview

In 2023, the explosive growth of Mini/Micro LED technology presented unprecedented challenges to the speed and precision of chip inspection equipment in the optoelectronics industry. As a global leader in LED chip manufacturing, San'an Optoelectronics urgently required a motion platform solution capable of balancing high dynamic response with ultra-high stability for its next-generation high-speed AOI inspection line. As the core equipment base supplier, BOSTAR successfully supported San'an Optoelectronics in upgrading its inspection platform through a combined solution of “artificial marble platform + linear motor module.” This project represents a typical successful application case.

Technical Challenges and Solutions

LED chip inspection requires identifying microscopic defects at the micrometer scale while maintaining throughput of tens of thousands of chips per hour. Traditional metal bases are prone to resonance during rapid start/stop cycles and exhibit high thermal expansion coefficients, leading to accuracy drift during prolonged operation. Addressing this challenge, BOSTAR provided a customized artificial granite platform. This material possesses an exceptionally high internal damping ratio, effectively absorbing micro-vibrations generated by high-speed linear motor motion. Its thermal stability exceeds that of cast iron by over 30 times, delivering a “zero-deformation” foundation for optical inspection systems.

Integrated with Bozhida's proprietary high-thrust linear motor modules, this design enables direct drive, eliminating mechanical backlash. The optimized finite element analysis of the marble platform and linear motor integration ensures geometric precision during high-speed scanning. This combination not only resolves vibration issues from rapid motion but also significantly reduces operational noise, aligning with Sanan Optoelectronics' green factory environmental standards.

Key Equipment Data

During Sanan Optoelectronics' production line acceptance testing, the Bozhida solution demonstrated exceptional performance. Data indicates that after 48 hours of continuous operation, the platform maintained flatness stability within 0.008mm/m². The linear motor module achieved scanning speeds up to 3m/s, with repeat positioning accuracy consistently at ±0.3μm, meeting defect detection requirements for post-mass transfer Mini LED production. Regarding vibration suppression, the platform elevated external interference vibration attenuation to 90%, ensuring clear imaging from the alignment camera during high-speed capture. Additionally, the system demonstrated outstanding thermal control, with thermal deformation remaining below 1μm even during environmental temperature fluctuations of ±2℃.

Intellectual Property Portfolio

To safeguard technological leadership and exclusivity, this project is underpinned by multiple core patents. These include “A Heat Dissipation Structure for a Marble Base Used in Optoelectronic Detection” (Patent No.: ZL202210XXXXXX.7), which effectively resolves heat accumulation issues during prolonged linear motor operation; and “A Vibration Suppression Method for Linear Motors Based on Marble Platforms” (Patent No.: ZL202210XXXXXX.2), which employs algorithms to actively counteract residual vibration. These patented technologies collectively establish a high technological barrier for the equipment, ensuring the long-term stable operation of Sanan Optoelectronics' inspection lines.

Implementation Results and Value

By mid-2023, this solution was formally implemented at Sanan Optoelectronics' Xiamen facility. Feedback data indicates that inspection equipment utilizing the Bozhida base solution achieved a 20% reduction in false detection rates and a 12% increase in Overall Equipment Effectiveness (OEE). Thanks to the base's exceptional stability, equipment calibration cycles extended from weekly to monthly, significantly reducing downtime for maintenance. The Bozhida team delivered end-to-end services—from solution design and installation to commissioning and personnel training—ensuring timely project completion.

Conclusion

This successful collaboration with Sanan Optoelectronics marks Bozhida's precision functional components as industry-leading in optoelectronic inspection applications. Through the innovative integration of marble platforms and linear motor modules, we have demonstrated the critical role of high-precision bases in enhancing LED inspection yield rates. Moving forward, Bozhida will deepen strategic collaboration with leading optoelectronics industry players to deliver more stable and efficient equipment base solutions for global customers, driving the optoelectronics industry toward miniaturization and intelligent development.