Mr. Zhang, the quality control manager of a certain semiconductor chip manufacturing enterprise, was once extremely troubled by the control of surface defects on devices: "During the mass production of our chips, the yield rate suddenly dropped by 15%. After investigation, it was found that there was a charge trap defect at the metal-semiconductor interface, but traditional testing equipment could not accurately locate the defect's position and density distribution." Only through manual screening one by one can the efficiency be extremely low, with daily losses exceeding one million yuan. Moreover, traditional equipment testing takes a long time and cannot meet the rapid detection requirements of mass production lines.
The industrial-customized surface photovoltage testing system of Saifan Optoelectronics provides an efficient solution for the quality control of semiconductor mass production. This system is equipped with a high-precision scanning platform and a rapid signal acquisition module, which can achieve large-area rapid scanning of the surface of semiconductor devices, accurately locate the defect position, and quantify the defect density distribution. The testing speed is five times faster than that of traditional equipment, and the testing time for a single chip is no more than 30 seconds, perfectly meeting the efficient detection requirements of mass production lines. Meanwhile, the system supports seamless integration with the production line data system, enabling real-time feedback of test results and providing a rapid response for process parameter adjustments, effectively preventing the batch production of defective products.
"Saifan's testing system has brought about a qualitative leap in our quality control efficiency!" " Engineer Zhang frankly admitted, "Through the rapid scanning and precise positioning of the system, we identified the root cause of the problem within 24 hours - the temperature deviation in the metal deposition process led to an increase in interface defects." After adjusting the process parameters, the yield rate of qualified products rapidly rose to over 98%, and the daily loss recovery exceeded one million yuan. Moreover, the system is easy to operate. Ordinary operators can get started after simple training, significantly reducing labor costs. At present, this system has become the core quality control equipment of our mass production line, providing a reliable guarantee for the stability of product quality.
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