Fluid extraction system, lithographic apparatus and device manufacturing method
    7.
    发明授权
    Fluid extraction system, lithographic apparatus and device manufacturing method 有权
    流体萃取系统,光刻设备和装置制造方法

    公开(公告)号:US09213246B2

    公开(公告)日:2015-12-15

    申请号:US14179276

    申请日:2014-02-12

    IPC分类号: G03F7/20 F01N1/02

    摘要: An immersion lithographic apparatus typically includes a fluid handling system. The fluid handling system generally has a two-phase fluid extraction system configured to remove a mixture of gas and liquid from a given location. Because the extraction fluid comprises two phases, the pressure in the extraction system can vary. This pressure variation can be passed through the immersion liquid and cause inaccuracy in the exposure. To reduce the pressure fluctuation in the extraction system, a buffer chamber may be used. This buffer chamber may be connected to the fluid extraction system in order to provide a volume of gas which reduces pressure fluctuation. Alternatively or additionally, a flexible wall may be provided somewhere in the fluid extraction system. The flexible wall may change shape in response to a pressure change in the fluid extraction system. By changing shape, the flexible wall can help to reduce, or eliminate, the pressure fluctuation.

    摘要翻译: 浸没式光刻设备通常包括流体处理系统。 流体处理系统通常具有配置成从给定位置去除气体和液体的混合物的两相流体萃取系统。 因为提取液包含两相,所以提取系统中的压力可以变化。 该压力变化可以通过浸没液体并导致曝光不准确。 为了减少提取系统中的压力波动,可以使用缓冲室。 该缓冲室可以连接到流体提取系统,以便提供减小压力波动的一定体积的气体。 或者或另外,柔性壁可以设置在流体提取系统的某处。 响应于流体提取系统中的压力变化,柔性壁可以改变形状。 通过改变形状,柔性壁可以帮助减少或消除压力波动。