Quick improvement of new order product’s yield. (Listed company)
Year: 2010
Country: Japan
Company name: confidential
Menu: PCB / Manufacturing quality improvement
The company needed to improve new ordered product’s yield. It was very tight situation, because an average yield of the multipin COB substrate (more than 400 pins) was 60% and they had to improve it to 90% in next 3 months to avoid client’s short-supply to the end customer..
To investigate and analyze failures for applying the appropriate actions based on the result.
Through investigation and analysis, we had found that surface damages and foreign body contaminations were causing 80% of failures. Based on the findings, we inspected general equipments, transport works, device maintenance, room cleanliness, and inside of chemical tank. Finally, we instructed the work-flow to the workers of 3 manufacturing sites.
Achieved target within two months.