Inspection apparatus, lithographic apparatus, and device manufacturing method
    1.
    发明授权
    Inspection apparatus, lithographic apparatus, and device manufacturing method 有权
    检验仪器,光刻设备及器件制造方法

    公开(公告)号:US09285687B2

    公开(公告)日:2016-03-15

    申请号:US13608069

    申请日:2012-09-10

    IPC分类号: G03F7/20

    摘要: An inspection apparatus includes an illumination system that receives a first beam and produces second and third beams from the first beam and a catadioptric objective that directs the second beam to reflect from a wafer. A first sensor detects a first image created by the reflected second beam. A refractive objective directs the third beam to reflect from the wafer, and a second sensor detects a second image created by the reflected third beam. The first and second images can be used for CD measurements. The second beam can have a spectral range from about 200 nm to about 425 nm, and the third beam can have a spectral range from about 425 nm to about 850 nm. A third sensor may be provide that detects a third image created by the third beam reflected from the wafer. The third image can be used for OV measurements.

    摘要翻译: 检查装置包括照明系统,其接收第一光束并产生来自第一光束的第二和第三光束;以及反射折射物镜,其引导第二光束从晶片反射。 第一传感器检测由反射的第二光束产生的第一图像。 折射物镜引导第三光束从晶片反射,第二传感器检测由反射的第三光束产生的第二图像。 第一张和第二张图像可用于CD测量。 第二光束可具有从约200nm至约425nm的光谱范围,并且第三光束可具有约425nm至约850nm的光谱范围。 可以提供第三传感器,其检测由从晶片反射的第三光束产生的第三图像。 第三个图像可用于OV测量。