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http://dx.doi.org/10.5050/KSNVN.2008.18.4.432

Performance Characteristics of High Speed Jetting Dispenser Using Piezoactuator  

Yun, Bo-Young (인하대학교 대학원 기계공학과)
Nguyen, Quoc-Hung (인하대학교 대학원 기계공학과)
Sohn, Jung-Woo (인하대학교 대학원 기계공학과)
Choi, Seung-Bok (인하대학교 기계공학부)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.18, no.4, 2008 , pp. 432-438 More about this Journal
Abstract
This paper presents a new jetting dispenser driven by a piezoelectric actuator at high operating frequency to provide very small dispensing dot size of adhesive in modern semiconductor packaging processes. After describing the mechanism and operational principle of the dispenser, a mathematical model of the structured system is derived by considering behavior of each component such as piezostack and dispensing needle. In the fluid modeling, a lumped parameter method is applied to model the adhesive whose rheological property is expressed by Bingham model. The governing equations are then derived by integrating the structural model with the fluid model. Based on the proposed model, dispensing performances such as dispensing amount are investigated with respect to various input trajectories.
Keywords
Jetting Dispenser; Piezoelectric Actuator; Semiconductor Packaging; High Speed Jetting;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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