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한국생산제조학회 한국생산제조학회지 한국공작기계학회 논문집 Vol.17 No.3
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    초록·키워드

    This paper presents a design of the reticle stage for lithography using VCM(Voice Coil Motor) and kinematic analysis. The stage has three axes for X,Y,θ<SUB>z</SUB>, those actuated by three VCM’s individually. The reticle stage has cross coupled relations between X,Y,θ<SUB>z</SUB> axes, and the closed solution of the forward/inverse kinematics were solved to get an accurate reference position. The reticle stage for lithography was designed for reaching both high accuracy and long stroke, which was 0.1㎛ (X,Y)/ 1μrad(θ<SUB>z</SUB>) accuracies and relatively long strokes about 2mm (X,Y) and 2 degrees(θ<SUB>z</SUB>). Also this research presents a rotational compensation algorithm for the precision gap sensor for the stage. Simulation results show the overall performance of the whole algorithm and the improvement quantity of the rotational compensation algorithm.

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      UCI(KEPA) : I410-ECN-0101-2009-552-014772236