Abstract
The precision positioning system for semiconductor lithography requires a robust structural design to obtain enough control bandwidth and an efficient actuator with fast access time. In this article, a three-axis stage is proposed as a fine stage of a dual stage for the precision positioning. Its actuators are voice coil motors (VCMs) whose coil windings are mounted on the coarse stage and its magnets are on the fine stage. Between the fine and coarse stages, there is no mechanical connection but only magnetic coupling. The eight pairs of magnets and four coil windings are arrayed symmetrically. The three-axis stage's dynamic characteristics are improved by enhancing the actuating force and modifying its own structure using finite-element analysis in order to meet its requirements of high bandwidth and large forces. The actuating force is strengthened by modifying each VCM's magnetic circuit. The structure is designed to be robust by using design of experiment (DOE) as well. The modified stage is verified to have enough dynamic characteristics through experiments.
| Original language | English |
|---|---|
| Pages (from-to) | 877-888 |
| Number of pages | 12 |
| Journal | Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science |
| Volume | 224 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 2010 Jan 1 |
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All Science Journal Classification (ASJC) codes
- Mechanical Engineering
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Robust design of a novel three-axis fine stage for precision positioning in lithography. / Lee, D. J.; Kim, K.; Lee, K. N.; Choi, H. G.; Park, N. C.; Park, Y. P.; Lee, M. G.
In: Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, Vol. 224, No. 4, 01.01.2010, p. 877-888.Research output: Contribution to journal › Article
TY - JOUR
T1 - Robust design of a novel three-axis fine stage for precision positioning in lithography
AU - Lee, D. J.
AU - Kim, K.
AU - Lee, K. N.
AU - Choi, H. G.
AU - Park, N. C.
AU - Park, Y. P.
AU - Lee, M. G.
PY - 2010/1/1
Y1 - 2010/1/1
N2 - The precision positioning system for semiconductor lithography requires a robust structural design to obtain enough control bandwidth and an efficient actuator with fast access time. In this article, a three-axis stage is proposed as a fine stage of a dual stage for the precision positioning. Its actuators are voice coil motors (VCMs) whose coil windings are mounted on the coarse stage and its magnets are on the fine stage. Between the fine and coarse stages, there is no mechanical connection but only magnetic coupling. The eight pairs of magnets and four coil windings are arrayed symmetrically. The three-axis stage's dynamic characteristics are improved by enhancing the actuating force and modifying its own structure using finite-element analysis in order to meet its requirements of high bandwidth and large forces. The actuating force is strengthened by modifying each VCM's magnetic circuit. The structure is designed to be robust by using design of experiment (DOE) as well. The modified stage is verified to have enough dynamic characteristics through experiments.
AB - The precision positioning system for semiconductor lithography requires a robust structural design to obtain enough control bandwidth and an efficient actuator with fast access time. In this article, a three-axis stage is proposed as a fine stage of a dual stage for the precision positioning. Its actuators are voice coil motors (VCMs) whose coil windings are mounted on the coarse stage and its magnets are on the fine stage. Between the fine and coarse stages, there is no mechanical connection but only magnetic coupling. The eight pairs of magnets and four coil windings are arrayed symmetrically. The three-axis stage's dynamic characteristics are improved by enhancing the actuating force and modifying its own structure using finite-element analysis in order to meet its requirements of high bandwidth and large forces. The actuating force is strengthened by modifying each VCM's magnetic circuit. The structure is designed to be robust by using design of experiment (DOE) as well. The modified stage is verified to have enough dynamic characteristics through experiments.
UR - http://www.scopus.com/inward/record.url?scp=77951668070&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77951668070&partnerID=8YFLogxK
U2 - 10.1243/09544062JMES1570
DO - 10.1243/09544062JMES1570
M3 - Article
AN - SCOPUS:77951668070
VL - 224
SP - 877
EP - 888
JO - Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science
JF - Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science
SN - 0954-4062
IS - 4
ER -