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    • 8. 发明申请
    • SCANNING ELECTRON MICROSCOPE
    • 扫描电子显微镜
    • US20120298865A1
    • 2012-11-29
    • US13522984
    • 2011-01-21
    • Seiko OmoriJunichi TanakaYoshinori NakayamaKeiichiro Hitomi
    • Seiko OmoriJunichi TanakaYoshinori NakayamaKeiichiro Hitomi
    • H01J37/26
    • G03F7/70625H01J37/222H01J37/28H01J2237/1536H01J2237/226H01J2237/24571H01J2237/2809H01J2237/2817
    • Disclosed is a scanning electron microscope provided with a calculation device (403) for measuring the dimension of a pattern on a sample (413), characterized in that the amount of change of a pattern shape, caused by electron beam irradiation, is calculated and stored, and a pattern shape contour (614; 815; 1512) before the sample is irradiated with an electron beam is restored from a pattern shape contour (613; 814; 1511) in a scanning electron microscope image (612; 813; 1510) after the sample is irradiated with an electron beam using the calculated amount and, then, the pattern shape contour (614; 815; 1512) is displayed. Thus, the shrinking of a resist and/or the effect of electrostatic charge caused when a sample is irradiated with an electron beam are eliminated, so that the shape contour of a two-dimensional pattern before irradiating an electron beam can be restored with a high degree of accuracy, and the dimension of a pattern can be measured with a high degree of accuracy, using the restored image.
    • 公开了一种具有用于测量样品(413)上的图案的尺寸的计算装置(403)的扫描电子显微镜,其特征在于,计算并存储由电子束照射引起的图案形状的变化量 在扫描电子显微镜图像(612; 813; 1510)中从扫描电子显微镜图像(612; 813; 1510)中的图案形状轮廓(613; 814; 1511)恢复在用电子束照射样品之前的图案形状轮廓(614; 815; 1512) 使用计算量用电子束照射样品,然后显示图案形状轮廓(614; 815; 1512)。 因此,消除了当用电子束照射样品时引起的抗蚀剂收缩和/或静电电荷的影响,从而能够以高的电压恢复照射电子束之前的二维图案的形状轮廓 使用恢复的图像,可以高精度地测量图案的精度和尺寸。