應用六標準差DMAIC方法於被動元件(MLCC)製程品質改善之研究

Six Sigma has been carried out by various organizations such as financial services, health care and government. Because of its great ability in solving problems, improving efficiency and management policy and making everyone willing to share knowledge, it provides numbers of advantages. The purpose of this research is to improve Multi-Layer Ceramic Capacitors (MLCC) process by applying DMAIC procedure. Tools such as Pareto Diagram, Trend Chart, Failure Mode and Effect Analysis and Design of Experiments are used for quality improvement. It begins by identifying the critical quality characteristics and process variables. Then design of experiments methodology is carried out to identify the optimal operating conditions of significant factors for further verification of the best process capability. The results indicate that DMAIC methodology has greatly improved the MLCC process in terms of reduced cost and defective rate. The contribution of this research is to establish an application model combined with enterprise's strategy and the Six Sigma methodology, which can serve as a roadmap for the enterprises when considering the six sigma in practice.