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Parameter Optimization Design for Touch Panel Laser Cutting Process

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3 Author(s)
Chao-Ton Su ; Dept. of Industrial Engineering and Engineering Management, National Tsing Hua University, Hsinchu, Taiwan ; Yu-Hsiang Hsiao ; Chia-Chin Chang

Cutting is an essential process in touch panel manufacturing, which concerns the effectiveness of whole touch panel manufacturing process and reliability of final application products. An alternative is laser cutting technology, which is expected to eclipse conventional cutting method in terms of cost and quality. The laser cutting quality of touch panel is determined by the appropriation of value settings of several parameters/factors involved in the complex laser cutting process. However, the parameter/factor adjusting method applied in practice mainly relies on the engineer's experience and trial-and-error experiment, which are unsystematic and susceptible to inefficiency and ineffectiveness. This study proposes a procedure for parameter/factor optimization of the touch panel laser cutting process to obtain maximum cutting quality. The proposed optimization procedure is successfully applied in a real case of laser cutting for projected capacitive touch panel, a type of touch panels using capacitive technology; it gradually becomes mainstream in the newly emerged information appliance marketplace. Results reveal that defect rate of the laser cutting process decreases from 32.6% to 0.3% once the proposed procedure on this paper is implemented, and this achievement outperforms other optimization strategies.

Published in:

IEEE Transactions on Automation Science and Engineering  (Volume:9 ,  Issue: 2 )