Lithographic apparatus, device manufacturing method, and device manufactured thereby
    4.
    发明授权
    Lithographic apparatus, device manufacturing method, and device manufactured thereby 有权
    平版印刷设备,器件制造方法和由此制造的器件

    公开(公告)号:US06707530B2

    公开(公告)日:2004-03-16

    申请号:US10138506

    申请日:2002-05-06

    IPC分类号: G03B2752

    摘要: A lithographic apparatus has an inner purge compartment surrounding and moving with a moveable component such as a mask table or a substrate table and an outer purge compartment surrounding the inner purge compartment. Purge gas is supplied to the inner compartment and exhausted from the outer compartment so that the inner purge compartment is at an average pressure higher than ambient and the outer compartment is at a pressure lower than ambient. Even when acceleration of the moveable object and compartments cause local pressure variations, the inner compartment is at a higher pressure than the outer compartment so that any gas flow is outward and contamination is prevented from reaching the inner compartment.

    摘要翻译: 光刻设备具有围绕并且与可移动部件(例如掩模台或基板台)和围绕内部净化隔室的外部净化室一起移动的内部净化室。 吹扫气体被供应到内部隔室并从外部隔室排出,使得内部净化室处于高于环境的平均压力,并且外部隔室处于低于环境的压力。 即使可移动物体和隔间的加速导致局部压力变化,内部隔室处于比外部隔室更高的压力,使得任何气体流向外,并且防止污染物到达内部隔室。