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81. 发明授权

US06831737B2 Apparatus and method for inspecting pattern 失效
标题翻译：用于检查图案的装置和方法
公开(公告)号：US06831737B2
公开(公告)日：2004-12-14
申请号：US10050778
申请日：2002-01-18
申请人： Sachio Uto , Minoru Yoshida , Toshihiko Nakata , Shunzi Maeda , Atsushi Shimoda
发明人： Sachio Uto , Minoru Yoshida , Toshihiko Nakata , Shunzi Maeda , Atsushi Shimoda
IPC分类号： G01N2100
CPC分类号： G01N21/21 , G01N21/33 , G01N21/55 , G01N21/9501 , G01N21/956 , G01N21/95607 , G01N2021/151 , G01N2021/95615 , G01N2201/06113 , G01N2201/1035
摘要： The present invention provides a pattern defect inspecting apparatus wherein an amount-of-light monitor unit detects a variation in the amount of ultraviolet laser light during inspection to thereby determine the presence or absence of an influence thereof exerted on the inspection and detects the prediction of the life of a light source and a malfunction thereof, and the interior of an optical system is cleaned up to thereby ensure the prolongation of the life of each optical part and long-term reliability thereof, and a method thereof.
摘要翻译：本发明提供了一种图案缺陷检查装置，其中光量监视器单元检测检查期间紫外激光量的变化，从而确定其对检查的影响的有无，并检测预测光源的寿命和故障以及光学系统的内部被清理，从而确保每个光学部件的寿命延长及其长期可靠性及其方法。

82. 发明授权

US06721047B2 Method and apparatus for inspecting defects of a specimen 失效
标题翻译：用于检查样本缺陷的方法和装置
公开(公告)号：US06721047B2
公开(公告)日：2004-04-13
申请号：US09944858
申请日：2001-08-31
申请人： Atsushi Shimoda , Sachio Uto , Minoru Yoshida , Shunji Maeda , Toshihiko Nakata
发明人： Atsushi Shimoda , Sachio Uto , Minoru Yoshida , Shunji Maeda , Toshihiko Nakata
IPC分类号： G01N2100
CPC分类号： G01N21/95684
摘要： The object of the invention is to provide high-sensitivity detection of fine patterns on a transparent inter-layer insulative film and defects on the same layer. Detection is performed with lower-layer patterns and defects on the same layer defocused, thus allowing detection of just the defects from the process that is intended for inspection. An inspection apparatus for a specimen on which a plurality of patterns intended to have identical shapes are arranged in a uniform manner includes: an imaging optical system with a relationship between illumination wavelength and objective lens numerical aperture that provides a resolution of no more than 0.18 microns, or preferably no more than 0.13 microns; an opto-electric converter disposed at an imaging position of the imaging optical system; an auto-focus optical system formed with an optical path disposed separate from the imaging optical system, with illumination applied at an incident angle of at least 85 degrees, preferably at least 88 degrees; means for adjusting a focal position of the imaging optical system based on a detection signal from the auto-focus optical system; and means for processing electronic signals from the opto-electrical converter.
摘要翻译：本发明的目的是提供在透明层间绝缘膜上的精细图案的高灵敏度检测和同一层上的缺陷。以相同层上的较低层图案和缺陷进行检测，散焦，从而允许仅检测来自用于检查的过程的缺陷。用于其上具有相同形状的多个图案的样本的检查装置以均匀的方式布置包括：具有提供不超过0.18微米的分辨率的照明波长和物镜数值孔径之间的关系的成像光学系统，或优选不超过0.13微米; 设置在成像光学系统的成像位置处的光电转换器; 形成有与成像光学系统分开设置的光路的自动聚焦光学系统，其入射角至少为85度，优选为至少88度; 用于基于来自所述自动聚焦光学系统的检测信号调整所述成像光学系统的焦点位置的装置; 以及用于处理来自光电转换器的电子信号的装置。

83. 发明授权

US5135303A Method of and apparatus for inspecting surface defects 失效
标题翻译：检查表面缺陷的方法和装置
公开(公告)号：US5135303A
公开(公告)日：1992-08-04
申请号：US658258
申请日：1991-02-20
申请人： Sachio Uto , Yoshimasa Ohshima
发明人： Sachio Uto , Yoshimasa Ohshima
IPC分类号： G01B11/00 , G01B11/30 , G01N21/88 , G01N21/94 , G01N21/95 , G11B5/84 , G11B33/10
CPC分类号： G11B5/84 , G01N21/88 , G11B33/10
摘要： The present invention relates to a method of inspecting a defect on a surface of a test piece, and to an apparatus using this method. The method comprises the steps of dividing the surface of the test piece into a plurality of inspection regions so as to detect image signals from said plurality of inspection regions thus divided; measuring feature values of background levels from image signals detected at divided inspection regions adjacent to the plurality of inspection regions thus divided; and representing the image signals detected at the adjacent divided inspection regions in binary form on the basis of threshold values set based on the measured feature values, thereby detecting fine defects on the surface of the test piece based on the image signals represented in binary form.
摘要翻译：本发明涉及一种检查试件表面上的缺陷的方法以及使用该方法的装置。该方法包括以下步骤：将测试片的表面划分成多个检查区域，以便检测来自所分割的所述多个检查区域的图像信号; 从与所分割的多个检查区域相邻的划分的检查区域检测到的图像信号测量背景级别的特征值; 并且基于基于测量的特征值设置的阈值来表示在相邻的分割检查区域检测到的图像信号，从而基于以二进制形式表示的图像信号来检测测试片表面上的细小缺陷。

84. 发明授权

US08553214B2 Method and equipment for detecting pattern defect 有权
标题翻译：检测图案缺陷的方法和设备
公开(公告)号：US08553214B2
公开(公告)日：2013-10-08
申请号：US12876709
申请日：2010-09-07
申请人： Hiroaki Shishido , Yasuhiro Yoshitake , Toshihiko Nakata , Shunji Maeda , Minoru Yoshida , Sachio Uto
发明人： Hiroaki Shishido , Yasuhiro Yoshitake , Toshihiko Nakata , Shunji Maeda , Minoru Yoshida , Sachio Uto
IPC分类号： G01N21/00
CPC分类号： G01N21/9501 , G01J3/0218 , G01J3/0224 , G01J3/10 , G01N21/8851 , G01N21/956 , G01N21/95607 , G01N2021/479 , G01N2021/95676 , G01N2201/06113 , G02B5/09 , G02B21/365 , G02B26/12
摘要： An inspection apparatus and method includes a light source, an illuminating unit having a polarization controller and an object lens for illuminating a specimen with light emitted from the light source and passed through the polarization controller and the object lens, a detection unit having a sensor for detecting light from the specimen illuminated by the illuminating unit, a processor which processes a signal output from the sensor so as to detect a defect on the specimen, and a display which displays information output from the processor. The processor processes an image formed from the signal output from the sensor in which the image is reduced in speckle pattern.
摘要翻译：一种检查装置和方法，包括光源，具有偏振控制器和物镜的照明单元，用于利用从光源发射并通过偏振控制器和物镜的光照射样本;检测单元，具有用于检测由所述照明单元照射的样本的光;处理器，其处理从所述传感器输出的信号以检测所述样本上的缺陷;以及显示器，其显示从所述处理器输出的信息。处理器处理从传感器输出的信号形成的图像，其中图像以斑点图案被减少。

85. 发明授权

US08149395B2 Apparatus and method for inspecting pattern 失效
标题翻译：用于检查图案的装置和方法
公开(公告)号：US08149395B2
公开(公告)日：2012-04-03
申请号：US13069091
申请日：2011-03-22
申请人： Sachio Uto , Minoru Yoshida , Toshihiko Nakata , Shunzi Maeda , Atsushi Shimoda
发明人： Sachio Uto , Minoru Yoshida , Toshihiko Nakata , Shunzi Maeda , Atsushi Shimoda
IPC分类号： G01N21/00
CPC分类号： G01N21/21 , G01N21/33 , G01N21/55 , G01N21/9501 , G01N21/956 , G01N21/95607 , G01N2021/151 , G01N2021/95615 , G01N2201/06113 , G01N2201/1035
摘要： A method and apparatus for inspecting defects includes emitting an ultraviolet light from an ultraviolet light source, illuminating a specimen with the ultraviolet light in which a polarization condition of the ultraviolet light is controlled, controlling a polarization condition of light reflected from the specimen which is illuminated by the polarization condition controlled ultraviolet light, detecting the light reflected from the specimen, processing the detected light so as to detect defects, and outputting information about the defects. The ultraviolet light source is disposed in a clean environment supplied with clean gas and separated from outside.
摘要翻译：用于检查缺陷的方法和装置包括从紫外光源发射紫外光，用受紫外光的偏振条件的紫外线照射样本，控制从被照射的样本反射的光的偏振状态通过偏光条件控制的紫外光，检测从样本反射的光，处理检测到的光以检测缺陷，并输出关于缺陷的信息。紫外光源设置在清洁环境中，并提供清洁气体并与外界分离。

86. 发明授权

US08107065B2 Method and apparatus for detecting defects 有权
标题翻译：检测缺陷的方法和装置
公开(公告)号：US08107065B2
公开(公告)日：2012-01-31
申请号：US12831102
申请日：2010-07-06
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.
摘要翻译：提供一种用于检测缺陷的方法和装置，用于通过减少由于电路图案引起的噪声来检测对诸如氧化物膜的透明膜在内的待检查物体的高灵敏度的有害缺陷或异物。用于检测缺陷的装置包括放置基板样本并可在X-Y-Z-中的每个中任意移动的台部; 方向，用于利用来自倾斜方向的光照射电路图案的照明系统，以及用于从上下方向在检测器上形成照射的检测区域的图像的图像形成光学系统。利用这种布置，收集通过照明系统的照明在电路图案上产生的衍射光和散射光。此外，在傅立叶变换表面上提供空间滤波器，用于阻挡来自电路图形的线性部分的衍射光。由检测器从样本接收的散射和反射光被转换成电信号。将一个芯片的转换电信号与另一个芯片的转换电信号进行比较。如果这些信号彼此不相同，则检测到异物被确定为存在于样品上。

87. 发明申请

US20090073443A1 Method And Equipment For Detecting Pattern Defect 有权
标题翻译：检测图案缺陷的方法和设备
公开(公告)号：US20090073443A1
公开(公告)日：2009-03-19
申请号：US12271348
申请日：2008-11-14
申请人： Hiroaki Shishido , Yasuhiro Yoshitake , Toshihiko Nakata , Shunji Maeda , Minoru Yoshida , Sachio Uto
发明人： Hiroaki Shishido , Yasuhiro Yoshitake , Toshihiko Nakata , Shunji Maeda , Minoru Yoshida , Sachio Uto
IPC分类号： G01J4/00
CPC分类号： G01N21/9501 , G01J3/0218 , G01J3/0224 , G01J3/10 , G01N21/8851 , G01N21/956 , G01N21/95607 , G01N2021/479 , G01N2021/95676 , G01N2201/06113 , G02B5/09 , G02B21/365 , G02B26/12
摘要： An inspection apparatus and method includes a light source which emits an ultraviolet laser beam, an illuminating unit having a polarization controller and an object lens for illuminating a specimen with light emitted from the light source and passed through the polarization controller and the object lens, a detection unit having a sensor for detecting light from the specimen illuminated by the illuminating unit, a processor which processes a signal output from the sensor so as to detect a defect on the specimen, and a display which displays information output from the processor. The processor processes an image formed from the signal output from the sensor in which the image is reduced in speckle pattern.
摘要翻译：一种检查装置和方法，包括发射紫外线激光的光源，具有偏振光控制器和物镜的照明单元，用于利用从光源发出并通过偏振光控制器和物镜的光照射样本，检测单元，具有用于检测由照明单元照射的样本的光的传感器;处理器，处理从传感器输出的信号以检测样本上的缺陷;以及显示器，显示从处理器输出的信息。处理器处理从传感器输出的信号形成的图像，其中图像以斑点图案被减少。

88. 发明授权

US07492452B2 Defect inspection method and system 失效
标题翻译：缺陷检查方法和系统
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
IPC分类号： G01N21/00 , G01N21/88 , H01L27/00
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。

89. 发明授权

US07465935B2 Method for inspecting pattern defect and device for realizing the same 失效
标题翻译：检查图案缺陷的方法及其实现方法
公开(公告)号：US07465935B2
公开(公告)日：2008-12-16
申请号：US11325550
申请日：2006-01-05
申请人： Yuta Urano , Hiroyuki Nakano , Shunji Maeda , Sachio Uto
发明人： Yuta Urano , Hiroyuki Nakano , Shunji Maeda , Sachio Uto
IPC分类号： G01N21/00
CPC分类号： G01N21/9501 , G01N21/47 , G01N21/4788 , G01N21/94 , G01N21/956
摘要： When using a CCD sensor as a photo-detector in a device for inspecting foreign matters and defects, it has a problem of causing electric noise while converting the signal charge, produced inside by photoelectric conversion, into voltage and reading it. Therefore, the weak detected signal obtained by detecting reflected and scattered light from small foreign matters and defects is buried in the electric noise, which has been an obstacle in detecting small foreign matters and defects. In order to solve the above problem, according to the present invention, an electron multiplying CCD sensor is used as a photo-detector. The electron multiplying CCD sensor is capable of enlarging signals brought about by inputted light relatively to the electric noise by multiplying the electrons produced through photoelectric conversion and reading them. Accordingly, compared to a conventional CCD sensor, it can detect weaker light and, therefore, smaller foreign matters and defects.
摘要翻译：当在用于检查异物和缺陷的装置中使用CCD传感器作为光检测器时，存在在将由光电转换产生的信号电荷转换成电压并读取的同时将电噪声引起的问题。因此，通过检测来自小异物和缺陷的反射和散射光获得的弱检测信号被埋在电噪声中，这是检测小异物和缺陷的障碍。为了解决上述问题，根据本发明，使用电子倍增CCD传感器作为光检测器。电子倍增CCD传感器能够通过将通过光电转换产生的电子与其进行读取而相对于电噪声放大由输入光产生的信号。因此，与常规CCD传感器相比，它可以检测较弱的光，因此可以检测较小的异物和缺陷。

90. 发明授权

US07369223B2 Method of apparatus for detecting particles on a specimen 失效
标题翻译：用于检测样品上的颗粒的装置的方法
公开(公告)号：US07369223B2
公开(公告)日：2008-05-06
申请号：US11086442
申请日：2005-03-23
申请人： Akira Hamamatsu , Minori Noguchi , Yoshimasa Ohshima , Sachio Uto , Taketo Ueno , Hiroyuki Nakano , Takahiro Jingu , Hisashi Hatano , Yukihisa Mohara , Seiji Otani , Takahiro Togashi
发明人： Akira Hamamatsu , Minori Noguchi , Yoshimasa Ohshima , Sachio Uto , Taketo Ueno , Hiroyuki Nakano , Takahiro Jingu , Hisashi Hatano , Yukihisa Mohara , Seiji Otani , Takahiro Togashi
IPC分类号： G01N21/00
CPC分类号： G01N21/956
摘要： An apparatus for inspecting a pattern to detect a small pattern defect has an illuminating light source, as illuminating optical system having a plurality of illuminating portions for switching an optical path of illuminating light flux to a surface of board constituting the inspected object from a plurality of directions different from each other, a detecting optical system having a variable magnification using an object lens for condensing reflected diffracted light from the illuminated board, a focusing optical system having a variable magnification capable of focusing an optical image by converged reflected diffracted light with a desired focusing magnification and an optical detector for detecting the optical image focused by the focusing optical system to convert it into an image signal, an A/D converter for converting the image signal into a digital image signal, and an image signal processor for processing the digital image signal to detect the defect.
摘要翻译：用于检查图案以检测小图案缺陷的装置具有照明光源，作为具有多个照明部的照明光学系统，所述照明光学系统具有多个照明部分，用于将照明光束的光路从多个照明部分切换到构成被检查物体的板的表面方向不同的检测光学系统，使用用于聚焦来自照明板的反射衍射光的物镜具有可变放大倍数的检测光学系统，具有可变倍率的聚焦光学系统，其能够通过会聚的反射衍射光聚焦光学图像，具有期望的聚焦放大率和用于检测由聚焦光学系统聚焦的光学图像以将其转换成图像信号的光学检测器，用于将图像信号转换为数字图像信号的A / D转换器和用于处理数字图像信号的图像信号处理器图像信号来检测缺陷。

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