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The Precision of Lead Frame Etching Characteristics Using Monte-Carlo Simulations  

Jeong, Heung-Cheol (Department of Mechanical Engineering, Pusan National University)
Choi, Gyung-Min (School of Mechanical Engineering, Pusan National University)
Kim, Duck-Jool (School of Mechanical Engineering, Pusan National University)
Publication Information
Abstract
The objective of this work was to simulate lead frame etching characteristics to optimize the etching process, Characteristics such as the etching factor and uniformity were investigated for different actual operating conditions, including pressure, distance from the nozzle tip, pipe pitch, and feed speed. The correlation between the etching and spray characteristics was analyzed to develop the etching model. Spray characteristics obtained from an experiment using a phase Doppler anemometer system were then simulated using a Monte-Carlo technique, The etching process model was coded in the Java language, The spray and etching characteristics were correlated with each other and simulated results agreed well with the measured data for a lead frame etching process, The optimal operating parameters under various conditions were successfully determined.
Keywords
Etching characteristics; Spray characteristics; Etching factor; PDA; Monte-Carlo simulation;
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  • Reference
1 Abate, K., 'Photochemical Etching of Metals,' Metal Finishing, Vol. 98, No. 6, pp. 414-417, 2000   DOI   ScienceOn
2 Sundaram, K. B., Sah, R. E., Baumann, H., Balachandran, K. and Todi, R. M., 'Wet Etching Studies of Silicon Nitride Thin Films Deposited by Electron Cyclotron Resonance Plasma Enhanced Chemical Vapor Deposition,' Microelectronic Engineering, Vol. 70, pp. 109-114, 2003   DOI   ScienceOn
3 Choi, Y. C., Jung, J. W. and Kim, D. J., 'Characteristics of Spray from Pressure-Swirl Nozzle with Different Liquid Properties and Nozzle Geometries,' Transactions of the KSME, B, Vol. 25, No. 12, pp. 1813-1820, 2001
4 Jung, J. W., Kim, Y. J. and Kim, D. J., 'Correlation between Spray Characteristics and Etching Characteristics in Twin Spray,' Transactions of the KSME, B, Vol. 28, No. 4, pp. 449-455, 2004   DOI
5 Goo, B. C. and Seo, J. W., 'Probabilistic Fatigue Life Evaluation of Rolling Stock Structures,' Transactions of KSAE, Vol. 11, No. 5, pp. 89-94, 2003
6 Go, S. G., Go, Y. H. and An, B. J., 'Representation of Data,' Statistical Quality Control, Part 2, pp. 14-17, 2000
7 Jung, J. W., Cha, K. J. and Kim, D. J., 'Characteristics of the Droplet Behavior in the Overlap Region of Twin Spray and in Single Spray,' Transactions of the KSME, B, Vol. 24, No. 10, pp. 1300-1308, 2000
8 Badano, A. and Flynn, M. J., 'Monte Carlo Modeling of Glare in CRTs for Medical Imaging,' Society for Information Display, Vol. 29, pp. 495-504, 1998
9 Visser, A. and Buhlert, M., 'Theoretical and Practical Aspects of the Miniaturization of Lead Frames by Double Sided Asymmetrical Spray Etching,' Journal of Materials Processing Technology, Vol. 115, pp. 108-113, 2001   DOI   ScienceOn
10 Allen, D. M., 'The Principles and Practice of Photochemical Machining and Photoetching,' Adam Hilger, Bristol and Boston, 1986
11 Ball, D., 'Fine Line Etching of Lead Frames,' PCMI Journal, Vol. 63, pp. 29-31, 1996
12 Ueda, R., Toki, S., Tanizaki, Y., Sugiutra, T. and Asakura, S., 'Principles of Photoetching in the Fabrication of Fine-Pitch Lead Frames,' Metal Finishing, Vol. 92, No. 1, pp. 29-31, 1994
13 Shrimpton, J. S. and Yule, A. J., 'Drop Size and Velocity Measurement in an Electrostatic Produced Hydrocarbon Spray,' ASME Journal of Fluids Engineering, Vol. 120, pp. 580-585, 1998   DOI   ScienceOn
14 Jung, J. W. and Kim, D. J., 'A Study on Effect of Spray Characteristics on Etching Characteristics in Micro Fabrication System,' Transactions of the KSME, B, Vol. 28, No. 1, pp. 109-117, 2004   DOI
15 Yoo, H. K., Kang, D. K., Lee, S. W. and Gweon, D. G., 'Error Analysis and Alignment Tolerancing for Confocal Scanning Microscope using Monte Carlo Method,' Journal of the KSPE, Vol. 21, No. 2, pp. 92-99, 2004