반도체/LCD 생산에서 연구개발 로트가 양산 생산성에 미치는 영향

Since semiconductor/LCD industry is a high-tech industry, constantly introducing new products into market in time through researching and developing is very important factor to secure competitiveness. In addition, it is also recognized as a core competency to maintain high productivity in mass production for lowering the unit price over very high fixed cost. This study develops a model for analyzing the effect of the speed of the R&D experimental products required for new product development in the semiconductor/LCD fabrication line on the throughput of mass production. Generally, when the research and development of new products enters the final stage, several R&D lots are put into operation, and the process conditions are optimized to start mass production. The faster the turn-around time (TAT) of the R&D lot, the faster the new product development speed is. In order to shorten the TAT of the R&D lot, the throughput of the mass production is inevitably reduced because of several factors such as an increase in setup time and scheduling inefficiency. This paper develops a probabilistic model for analyzing the offset structure of the throughput of the mass production according to the speed level of an R&D lot in the semiconductor/LCD production and conducts an empirical analysis to illustrate how the model can be used in practice. The analysis shows what level of mass production loss occurs when a semiconductor fab manager operates a certain level of TAT ​​for an R&D lot. This model is expected to provide the fabrication manager with important information on the appropriate TAT decision of an R&D lot.