dc.description.abstract | Taiwan has focused on the development of the semiconductors manufacturing since 1970. Up to now, Output value of semiconductors manufacturing for 23% of the total Taiwan stocks. According to the Industrial Technology Research Institute statistics, the semiconductor output value has exceeded NT$1 trillion since 2004. The semiconductor output value has exceeded NT$2 trillion since 2014. Taiwanese semiconductors manufacturing has developed quite large scale and played an important role in the global supply chain. For example, wafer foundry and intergraded circuit package top of ranks in the world, and intergraded circuit design to ranks second in the world. In fact, semiconductor are chemical compositions and elements that can make electric circuit through its property can solve complicated information problems. Industry chain of semiconductors manufacturing consist of three parts. From intergraded circuit design to intergraded circuit testing play an important role in the world. Ceramic substrate is a kind of semiconductors manufacturing, which has good heat conduction, good heat tolerance and good acclimation. Owing to productive process is more complicated than Printed circuit board, scheduling needs to play an important role.
The purpose of the study discusses a study of ceramic substrate manufacturing for job shop scheduling of the case company. Using system simulation to construct a ceramic substrate manufacturing model of the case company. For one thing, different orders are given different weights, and then the data run in the system simulation. Finally, to find out the main bottleneck workstation of the case company. For the bottleneck workstation use the common dispatching rules of the semiconductors manufacturing and combination of dispatching rules while in other non-bottleneck workstations that use the EDD dispatching rules for testing. First of all, the study based on the average flow time output that select two better dispatching rules, and then based on the average tardiness time and the waiting time of the bottleneck workstation that select five better dispatching rules. Finally, Five dispatching rules are ranked. The experimental results show that the first priority of the study is FIFO+EDD dispatching rules, and the second choice is SRPT+EDD dispatching rules. FIFO+EDD dispatching rules is selected, the tardiness time and the average waiting time of the bottleneck station can rank the first, while SRPT+EDD dispatching rules is selected, the tardiness time and the average waiting time of the bottleneck station can rank the second. | en_US |