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TFT-LCD is a highly capital-intensive industry. The company in this industry creates value and increases their global market share by reducing production cycle time on the basis of no additional cost incurred. In this research, we take the concept of systematic theory in the book “The Goal: A Process of Ongoing Improvement” written by Dr. Goldratt to practice the reduction of cycle time. In the 1980s, Dr. Goldratt developed Optimized Production Technology, which is commonly known as Theory of Constraint (TOC) academically. By using TOC to identify factory bottlenecks, we can effectively shorten bottleneck machine process time and improve the utilization to decrease the overall production cycle time. After three months of experiment, a positive and exciting result is found, The factory in this case successfully shortened production cycle time and improved the efficiency with no additional spending to create higher value for the company.
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