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http://dx.doi.org/10.4313/JKEM.2004.17.12.1259

Simulation of Ultrasonic Dry Cleaning for Semiconductor/display Device Application  

Yun, Eui-Jung (호서대학교 정보제어공학과)
Lee, Gang-won (한국생산기술연구원)
Kim, Chol-Ho (한국생산기술연구원)
Lee, Seok-Tae (호서대학교 정보제어공학과)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.17, no.12, 2004 , pp. 1259-1263 More about this Journal
Abstract
In this paper, the optimum design of ultrasonic dry cleaning head was investigated. The transducer instead of mechanical dynamic structure was used to generate ultrasonic wave and the horn-shape amplifier was utilized to solve the energy decaying problem of ultrasonic wave with propagating it through the media. The analyses of ultrasonic wave and a fluid for the selected structure of a cleaning head were carried out using SYSNOISE and ANSYS simulators, respectively. Based on simulator results, the distance between a horn and the substrate of 4 mm and the horn diameter of 10 mm were determined to maximize the energy of ultrasonic waves. The cooling structure was also considered to reduce the heat from the transducer and the horn. The equivalent circuit for the fabricated horn was deduced from HP4194A impedance/gain/phase analyzer and the frequency of an ultrasonic wave of 20.25 kHz was confirmed using the parameters of the equivalent circuit.
Keywords
Ultrasonic dry cleaning; Transducer; LCD; Semiconductor; Horn; Clean air;
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