Yield improvements in semiconductor manufacturing using TRIZ methodology

See, Li Xin (2018) Yield improvements in semiconductor manufacturing using TRIZ methodology. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

In this full of competitive environment, every manufacturer has to increase the performance. Many companies are required to apply a lot of programs regarding the increasing of the productivity so can survive in the real world. A company which can fulfil the customer need with the better quality may exceed its competitors. This study is about yield improvement in semiconductor manufacturing using TRIZ methodology. This study is carried out at a semiconductor company which is located at the Melaka. The company is currently facing the low throughput. The case company had identified that the bottleneck process is in the testing area. The machine in the testing area had contributed the low Overall Equipment Effectiveness (OEE). The case company desire to improve the OEE of the machine by improving the quality yield. So, the company plans to improve the quality parameter in the testing department and therefore can increase the OEE of the machine. Therefore the throughput of the company can be improved. This study will focus on the quality parameter in the testing department. The aim of the project is to improve the OEE by improving the quality of the machine. To fulfil the objectives, the top three significant reject types were identified using the Pareto chart. After that, the critical root causes were identified for the significant reject types using Ishikawa diagram. Theory of Inventive Problem Solving (TRIZ) methodology was used to propose the feasible solution. There are five solution that proposed to the case company and three of the solutions were carried the pilot run due to time constraint. The yield was improved around 0.5% based on the data obtained. The increment can earn a profit of about RM 500,000. So, the yield improvement can give the profit to the case company.

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