On October 29, 2024, at the 2024 TrendForce Self-emissive Display Industry Seminar, MENTO CEO Tang Yangshu delivered a speech titled “How to Bridge the Gap Between Measurement and Repair Technologies for Mini/Micro LEDs.” He explored the relationship between quality management and demand vs. solutions, as well as how to leverage technology and capabilities to support the implementation of these solutions.
Tang Yangshu emphasized the importance of quality control in the Mini LED production process and introduced MENTO’s technical strengths in the realm of inspection and repair equipment. The presentation was divided into three parts: the relationship between demand and solutions, the supporting technology and capabilities, and MENTO’s technical prowess.

The Relationship Between Demand and Solutions
Tang Yangshu pointed out that the core of quality management lies in enhancing production efficiency and reducing costs. He emphasized that MENTO continuously explores and develops new solutions focused on these two key points. He presented a typical Mini LED production line, covering every stage from substrate to printing, inspection, function testing, and repair. Each step’s quality control is crucial. In the substrate phase, he specifically mentioned the impact of pad spacing and head leakage issues on subsequent processes, highlighting the need to monitor pad size and surface defects to ensure smooth operation.

Supporting Technical Capabilities
Next, Tang Yangshu discussed MENTO’s technical capabilities. With the rapid development of Mini LED technology, the manufacturing sector faces numerous challenges, including PCB substrate PAD consistency, soldering quality, solder paste printing uniformity, die bonding equipment precision, efficiency matching, and defect detection. To address these issues, MENTO has launched a series of inspection and repair devices specifically for Mini LEDs, encompassing shrinkage measurement, solder paste inspection (SPI), pre-reflow automatic optical inspection (AOI), post-reflow AOI, lighting testing (Lighting AOI), and repair. These solutions meet the needs of a typical Mini LED production line configuration.

Tang Yangshu demonstrated how to implement effective quality management across each process stage through image processing and software systems. He also highlighted the significant application of AI technology in the inspection process, utilizing smart systems to achieve both qualitative and quantitative analysis, thus providing a basis for further process improvements.

MENTO’s Technical Strengths
Finally, Tang Yangshu provided a brief introduction to MENTO, emphasizing its strengths in image processing and machine vision. The company employs industrial machine vision and AI technology to perform various inspections, including foreign object detection, white balance (WB) quality detection, component absence and misalignment detection, scratch detection, field flatness correction, lens distortion correction, and sub-pixel positioning. By closely integrating hardware and software, MENTO is dedicated to enhancing the quality of Mini LED products, thereby facilitating the advancement of the Mini/Micro LED industry.

Tang Yangshu’s presentation not only shared advanced technologies and solutions but also provided attendees with new insights and directions, showcasing the importance of quality management in smart manufacturing.
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