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公开(公告)号：US20060290923A1
公开(公告)日：2006-12-28
申请号：US11472426
申请日：2006-06-22
申请人： Hiroyuki Nakano , Toshihiko Nakata , Sachio Uto , Akira Hamamatsu , Shunji Maeda , Yuta Urano
发明人： Hiroyuki Nakano , Toshihiko Nakata , Sachio Uto , Akira Hamamatsu , Shunji Maeda , Yuta Urano
IPC分类号： G01N21/88
CPC分类号： G01N21/956 , G01N21/47 , G01N21/94 , G01N21/9501 , G01N2021/8822
摘要： A method and apparatus for detecting defects are provided for detecting harmful defects or foreign matter with high sensitivity on an object to be inspected with a transparent film, such as an oxide film, by reducing noise due to a circuit pattern. The apparatus for detecting defects includes a stage part on which a substrate specimen is put and which is arbitrarily movable in each of the X-Y-Z-θ directions, an illumination system for irradiating the circuit pattern with light from an inclined direction, and an image-forming optical system for forming an image of an irradiated detection area on a detector from the upward and oblique directions. With this arrangement, diffracted light and scattered light caused on the circuit pattern through the illumination by the illumination system is collected. Furthermore, a spatial filter is provided on a Fourier transform surface for blocking the diffracted light from a linear part of the circuit pattern. The scattered and reflected light received by the detector from the specimen is converted into an electrical signal. The converted electrical signal of one chip is compared with that of the other adjacent chip. If these signals are not identical to each other, the foreign matter is determined to exist on the specimen in detection.
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公开(公告)号：US07511806B2
公开(公告)日：2009-03-31
申请号：US11931120
申请日：2007-10-31
IPC分类号： G01N21/00
CPC分类号： G01N21/9501
摘要： A defect-inspecting apparatus including an arrangement to convert detected light into a first signal corresponding to light illuminated by a high-angle illumination optical system and/or a second signal corresponding to light illuminated by a low-angle illumination optical system; and a classification unit which utilizes the first and second signal and classifies defects on the object to be inspected, wherein a defect size is estimated by changing a correction coefficient of the defect size on a basis of a concave-convex level (b/a), where the concave-convex level (b/a) of a defect is indicated by a ratio of a size b of a first direction of the defect to a size a of a second direction of the defect, where the second direction is lateral to the first direction.
摘要翻译： 一种缺陷检查装置，包括将检测到的光转换成对应于由高角度照明光学系统照射的光的第一信号和/或对应于由低角度照明光学系统照射的光的第二信号的装置; 以及分类单元，其利用所述第一信号和所述第二信号并对所检查的物体进行缺陷分类，其中通过基于凹凸水平（b / a）改变所述缺陷尺寸的校正系数来估计缺陷尺寸， 其中缺陷的凹凸级（b / a）由缺陷的第一方向的尺寸b与缺陷的第二方向的尺寸a的比值表示，其中第二方向与第 第一个方向。
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公开(公告)号：US20080117415A1
公开(公告)日：2008-05-22
申请号：US11931120
申请日：2007-10-31
IPC分类号： G01N21/898
CPC分类号： G01N21/9501
摘要： A defect-inspecting apparatus including an arrangement to convert detected light into a first signal corresponding to light illuminated by a high-angle illumination optical system and/or a second signal corresponding to light illuminated by a low-angle illumination optical system; and a classification unit which utilizes the first and second signal and classifies defects on the object to be inspected, wherein a defect size is estimated by changing a correction coefficient of the defect size on a basis of a concave-convex level (b/a), where the concavo-convex level (b/a) of a defect is indicated by a ratio of a size b of a first direction of the defect to a size a of a second direction of the defect, where the second direction is lateral to the first direction.
摘要翻译： 一种缺陷检查装置，包括将检测到的光转换成对应于由高角度照明光学系统照射的光的第一信号和/或对应于由低角度照明光学系统照射的光的第二信号的装置; 以及分类单元，其利用所述第一信号和所述第二信号并对所检查的物体进行缺陷分类，其中通过基于凹凸水平（b / a）改变所述缺陷尺寸的校正系数来估计缺陷尺寸， ，其中缺陷的凹凸级（b / a）由缺陷的第一方向的尺寸b与缺陷的第二方向的尺寸a的比率指示，其中第二方向与第 第一个方向。
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公开(公告)号：US07315366B2
公开(公告)日：2008-01-01
申请号：US11714196
申请日：2007-03-06
IPC分类号： G01N21/00
CPC分类号： G01N21/9501
摘要： A defect-inspecting apparatus including an arrangement to convert detected light into a first signal corresponding to light illuminated by a high-angle illumination optical system and/or a second signal corresponding to light illuminated by a low-angle illumination optical system; and a classification unit which utilizes the first and second signal and classifies defects on the object to be inspected, wherein a defect size is estimated by changing a correction coefficient of the defect size on a basis of a concave-convex level (b/a), where the concavo-convex level (b/a) of a defect is indicated by a ratio of a size b of a first direction of the defect to a size a of a second direction of the defect, where the second direction is lateral to the first direction.
摘要翻译： 一种缺陷检查装置，包括将检测到的光转换成对应于由高角度照明光学系统照射的光的第一信号和/或对应于由低角度照明光学系统照射的光的第二信号的装置; 以及分类单元，其利用所述第一信号和所述第二信号并对所检查的物体进行缺陷分类，其中通过基于凹凸水平（b / a）改变所述缺陷尺寸的校正系数来估计缺陷尺寸， ，其中缺陷的凹凸级（b / a）由缺陷的第一方向的尺寸b与缺陷的第二方向的尺寸a的比率指示，其中第二方向与第 第一个方向。
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公开(公告)号：US20070153264A1
公开(公告)日：2007-07-05
申请号：US11714196
申请日：2007-03-06
IPC分类号： G01N21/88
CPC分类号： G01N21/9501
摘要： A defect-inspecting apparatus including an arrangement to convert detected light into a first signal corresponding to light illuminated by a high-angle illumination optical system and/or a second signal corresponding to light illuminated by a low-angle illumination optical system; and a classification unit which utilizes the first and second signal and classifies defects on the object to be inspected, wherein a defect size is estimated by changing a correction coefficient of the defect size on a basis of a concave-convex level (b/a), where the concavo-convex level (b/a) of a defect is indicated by a ratio of a size b of a first direction of the defect to a size a of a second direction of the defect, where the second direction is lateral to the first direction.
摘要翻译： 一种缺陷检查装置，包括将检测到的光转换成对应于由高角度照明光学系统照射的光的第一信号和/或对应于由低角度照明光学系统照射的光的第二信号的装置; 以及分类单元，其利用所述第一信号和所述第二信号并对所检查的物体进行缺陷分类，其中通过基于凹凸水平（b / a）改变所述缺陷尺寸的校正系数来估计缺陷尺寸， ，其中缺陷的凹凸级（b / a）由缺陷的第一方向的尺寸b与缺陷的第二方向的尺寸a的比率指示，其中第二方向与第 第一个方向。
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公开(公告)号：US07187438B2
公开(公告)日：2007-03-06
申请号：US10050776
申请日：2002-01-18
IPC分类号： G01N21/00
CPC分类号： G01N21/9501
摘要： The present invention is characterized by the following: incident illumination and oblique illumination are performed on a scratch and a foreign material, which have been made on a surface of a polished or a ground insulating layer, with substantially the same luminous flux; and on the basis of a correlation such as a ratio of intensity of scattered light generated by the shallow scratch and the foreign material between the incident illumination and the oblique illumination, the shallow scratch is discriminated from the foreign material.
摘要翻译： 本发明的特征在于：在具有基本上相同的光通量的在抛光或接地绝缘层的表面上制成的划痕和异物进行入射照明和倾斜照明; 并且基于由浅划痕产生的散射光的强度与入射照明与倾斜照明之间的异物的比例的相关性，浅色划痕被鉴别为异物。
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公开(公告)号：US07859656B2
公开(公告)日：2010-12-28
申请号：US12366956
申请日：2009-02-06
申请人： Sachio Uto , Hiroyuki Nakano , Yukihiro Shibata , Akira Hamamatsu , Yuta Urano
发明人： Sachio Uto , Hiroyuki Nakano , Yukihiro Shibata , Akira Hamamatsu , Yuta Urano
CPC分类号： G01N21/9501 , G01N21/21 , G01N21/4788 , G01N21/94 , G01N21/956
摘要： An inspection system includes: a facility that uses wide-band illumination light having different wavelengths and single-wavelength light to perform dark-field illumination on an object of inspection, which has the surface thereof coated with a transparent film, in a plurality of illuminating directions at a plurality of illuminating angles; a facility that detects light reflected or scattered from repetitive patterns and light reflected or scattered from non-repetitive patterns with the wavelengths thereof separated from each other; a facility that efficiently detects light reflected or scattered from a foreign matter or defect in the repetitive patterns or non-repetitive patterns or a foreign matter or defect on the surface of the transparent film; and a facility that removes light, which is diffracted by the repetitive patterns, from a diffracted light image of actual patterns or design data representing patterns. Consequently, a more microscopic defect can be detected stably.
摘要翻译： 检查系统包括：使用具有不同波长的宽带照明光和单波长光的设备，在具有透明膜的表面上的多个照明中对被检查对象进行暗视场照明 多个照明角度的方向; 检测从重复图案反射或散射的光和从彼此分离的波长的非重复图案反射或散射的光的设备; 有效地检测异物反射或散射的光或重复图案或非重复图案中的缺陷或透明膜表面上的异物或缺陷的设备; 以及通过重复图案衍射的光从实际图案的衍射光图像或表示图案的设计数据中去除的设施。 因此，能够稳定地检测出更微细的缺陷。
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公开(公告)号：US20110075134A1
公开(公告)日：2011-03-31
申请号：US12964176
申请日：2010-12-09
申请人： Sachio UTO , Hiroyuki Nakano , Yukihiro Shibata , Akira Hamamatsu , Yuta Urano
发明人： Sachio UTO , Hiroyuki Nakano , Yukihiro Shibata , Akira Hamamatsu , Yuta Urano
IPC分类号： G01N21/88
CPC分类号： G01N21/9501 , G01N21/21 , G01N21/4788 , G01N21/94 , G01N21/956
摘要： An apparatus for inspecting a specimen includes a first illumination unit having a laser light source and a first optical component for illuminating a specimen on which patterns are formed with a laser from a first elevation angle direction, a second illuminating unit having a light source and a second optical component for illuminating the specimen from a second elevation angle direction which is greater than the first elevation angle, a first detection optical unit which detects light from the specimen illuminated by the first illumination unit, a second detection optical unit which detects light from the specimen illuminated by the second illumination unit, and a signal processing unit which processes signals output from the first detector to detect defects in a first area on the specimen and processes signals output from the second detector to detect defects in a second area on the specimen.
摘要翻译： 一种用于检查试样的装置包括具有激光光源的第一照明单元和用于照射具有来自第一仰角方向的激光形成图案的样本的第一光学部件，具有光源的第二照明单元和 第二光学部件，用于从大于所述第一仰角的第二仰角方向照射所述试样;第一检测光学单元，其检测来自所述第一照明单元照射的样本的光;第二检测光学单元， 由第二照明单元照射的样本，以及信号处理单元，处理从第一检测器输出的信号，以检测样本上的第一区域中的缺陷，并处理从第二检测器输出的信号，以检测样本上的第二区域中的缺陷。
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公开(公告)号：US07492452B2
公开(公告)日：2009-02-17
申请号：US11626925
申请日：2007-01-25
申请人： Sachio Uto , Hiroyuki Nakano , Yukihiro Shibata , Akira Hamamatsu , Yuta Urano
发明人： Sachio Uto , Hiroyuki Nakano , Yukihiro Shibata , Akira Hamamatsu , Yuta Urano
CPC分类号： G01N21/9501 , G01N21/21 , G01N21/4788 , G01N21/94 , G01N21/956
摘要： An inspection system includes: a facility that uses wide-band illumination light having different wavelengths and single-wavelength light to perform dark-field illumination on an object of inspection, which has the surface thereof coated with a transparent film, in a plurality of illuminating directions at a plurality of illuminating angles; a facility that detects light reflected or scattered from repetitive patterns and light reflected or scattered from non-repetitive patterns with the wavelengths thereof separated from each other; a facility that efficiently detects light reflected or scattered from a foreign matter or defect in the repetitive patterns or non-repetitive patterns or a foreign matter or defect on the surface of the transparent film; and a facility that removes light, which is diffracted by the repetitive patterns, from a diffracted light image of actual patterns or design data representing patterns. Consequently, a more microscopic defect can be detected stably.
摘要翻译： 检查系统包括：使用具有不同波长的宽带照明光和单波长光的设备，在具有透明膜的表面上的多个照明中对被检查对象进行暗场照明 多个照明角度的方向; 检测从重复图案反射或散射的光和从彼此分离的波长的非重复图案反射或散射的光的设备; 有效地检测异物反射或散射的光或重复图案或非重复图案中的缺陷或透明膜表面上的异物或缺陷的设备; 以及通过重复图案衍射的光从实际图案的衍射光图像或表示图案的设计数据中去除的设施。 因此，能够稳定地检测出更微细的缺陷。
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公开(公告)号：US20070206184A1
公开(公告)日：2007-09-06
申请号：US11626925
申请日：2007-01-25
申请人： Sachio Uto , Hiroyuki Nakano , Yukihiro Shibata , Akira Hamamatsu , Yuta Urano
发明人： Sachio Uto , Hiroyuki Nakano , Yukihiro Shibata , Akira Hamamatsu , Yuta Urano
IPC分类号： G01N21/88
CPC分类号： G01N21/9501 , G01N21/21 , G01N21/4788 , G01N21/94 , G01N21/956
摘要： An inspection system includes: a facility that uses wide-band illumination light having different wavelengths and single-wavelength light to perform dark-field illumination on an object of inspection, which has the surface thereof coated with a transparent film, in a plurality of illuminating directions at a plurality of illuminating angles; a facility that detects light reflected or scattered from repetitive patterns and light reflected or scattered from non-repetitive patterns with the wavelengths thereof separated from each other; a facility that efficiently detects light reflected or scattered from a foreign matter or defect in the repetitive patterns or non-repetitive patterns or a foreign matter or defect on the surface of the transparent film; and a facility that removes light, which is diffracted by the repetitive patterns, from a diffracted light image of actual patterns or design data representing patterns. Consequently, a more microscopic defect can be detected stably.
摘要翻译： 检查系统包括：使用具有不同波长的宽带照明光和单波长光的设备，在具有透明膜的表面上的多个照明中对被检查对象进行暗场照明 多个照明角度的方向; 检测从重复图案反射或散射的光和从彼此分离的波长的非重复图案反射或散射的光的设备; 有效地检测异物反射或散射的光或重复图案或非重复图案中的缺陷或透明膜表面上的异物或缺陷的设备; 以及通过重复图案衍射的光从实际图案的衍射光图像或表示图案的设计数据中去除的设施。 因此，能够稳定地检测出更微细的缺陷。
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