Lithography projection apparatus
    6.
    发明专利
    Lithography projection apparatus 有权
    LITHOGRAPHY投影设备

    公开(公告)号:JP2010258470A

    公开(公告)日:2010-11-11

    申请号:JP2010151194

    申请日:2010-07-01

    CPC classification number: G03F7/70341 G03F7/708 G03F7/70858

    Abstract: PROBLEM TO BE SOLVED: To improve the lithography performance of an apparatus having a liquid that fills the space between a final element of a projection system and a substrate. SOLUTION: A lithographic apparatus and a device manufacturing method make use of a high-refractive index liquid, confined in a reservoir 13, at least partly filling a lithography field between a final element of a projection lens and the substrate. Bubbles forming in the liquid resulting from dissolved atmospheric gases or the gas discharge from an apparatus element exposed to the liquid are detected and removed so that they do not interfere with the exposure, to cause burning defects on the substrate. The detection can be carried out, by measuring the frequency dependence of ultrasonic attenuation in the liquid and the removal of bubbles can be implemented by: degassing and pressurizing the liquid; isolating the liquid from the atmosphere; supplying a continuous flow of liquid through the lithography field using liquids of low surface tension; and further, phase-shifting the ultrasonic standing-wave nodes. COPYRIGHT: (C)2011,JPO&INPIT

    Abstract translation: 要解决的问题:为了提高具有填充投影系统的最终元件和基板之间的空间的液体的装置的光刻性能。 解决方案:光刻设备和器件制造方法利用限制在储存器13中的高折射率液体,至少部分地填充投影透镜的最终元件与基底之间的光刻场。 检测并除去由溶解的大气气体引起的液体中形成的气泡或暴露于液体的装置元件的气体排出,使得它们不干扰曝光,引起基板上的燃烧缺陷。 可以通过测量液体中超声波衰减的频率依赖性进行检测,并且可以通过以下方式实现气泡的去除:对液体进行脱气和加压; 从大气隔离液体; 使用低表面张力的液体通过光刻领域提供连续的液体流; 并且进一步移相超声波驻波节点。 版权所有(C)2011,JPO&INPIT

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