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    • 71. 发明授权
    • Defect inspection method and device thereof
    • 缺陷检查方法及其装置
    • US08811712B2
    • 2014-08-19
    • US13141375
    • 2009-10-22
    • Shunji MaedaKaoru SakaiHidetoshi Nishiyama
    • Shunji MaedaKaoru SakaiHidetoshi Nishiyama
    • G06K9/00
    • H01L22/20G01N21/95623G06T7/001G06T2207/30148H01L22/12
    • The invention provides a defect inspection method and a defect inspection device which enable a defect to be inspected regardless of optical conditions. The invention comprises the steps of setting a target local region and a plurality of corresponding local regions in the image signals, the target local region including a target pixel and an area surrounding the target pixel, the corresponding local regions including pixels corresponding to the target pixel and areas surrounding the corresponding pixels; searching similarities between the image signal of the target local region and the image signals of the plurality of corresponding local regions; determining a plurality of image signals that represent corresponding local regions and are similar to the image signal of the target local region; and comparing the image signal of the target local region with the image signals that represent the corresponding local regions.
    • 本发明提供一种缺陷检查方法和缺陷检查装置,其能够在不考虑光学条件的情况下检查缺陷。 本发明包括以下步骤:在图像信号中设置目标局部区域和多个对应的局部区域,目标局部区域包括目标像素和围绕目标像素的区域,对应的局部区域包括与目标像素对应的像素 和相应像素周围的区域; 搜索所述目标局部区域的图像信号与所述多个对应的局部区域的图像信号之间的相似度; 确定表示对应的局部区域并且与目标局部区域的图像信号相似的多个图像信号; 并将目标局部区域的图像信号与表示对应的局部区域的图像信号进行比较。
    • 75. 发明授权
    • Sample inspection apparatus, sample inspection method and sample inspection system
    • 样品检验仪器,样品检验方法和样品检测系统
    • US07923700B2
    • 2011-04-12
    • US11960267
    • 2007-12-19
    • Hidetoshi Nishiyama
    • Hidetoshi Nishiyama
    • H01J37/20
    • G01N23/2251H01J37/20H01J37/228H01J37/256H01J37/28H01J2237/206H01J2237/208H01J2237/2608H01J2237/2808
    • Sample inspection apparatus, sample inspection method, and sample inspection system are offered which can give a stimulus to a sample held on a film when the sample is inspected by irradiating it with a primary beam (e.g., an electron beam or other charged-particle beam) via the film. The apparatus has the film, a vacuum chamber, primary beam irradiation column, signal detector, and a controller for controlling the operations of the beam irradiation column and signal detector. The sample is held on a first surface of the film opened to permit access to the film. The vacuum chamber reduces the pressure of the ambient in contact with a second surface of the film. The irradiation column irradiates the sample with the primary beam via the film from the second surface side. The detector detects a secondary signal produced from the sample in response to the irradiation.
    • 提供样品检查装置,样品检查方法和样品检查系统,其可以通过用初级束(例如电子束或其他带电粒子束)照射样品来检查样品时对保持在膜上的样品的刺激 )通过电影。 该装置具有膜,真空室,主光束照射柱,信号检测器和用于控制光束照射柱和信号检测器的操作的控制器。 样品被保持在薄膜的第一表面上,以允许接近薄膜。 真空室减小与膜的第二表面接触的环境的压力。 照射列从第二表面侧通过膜从主光束照射样品。 检测器响应于照射而检测从样品产生的二次信号。
    • 76. 发明申请
    • Method and apparatus for pattern inspection
    • 图案检查方法和装置
    • US20100053319A1
    • 2010-03-04
    • US12591179
    • 2009-11-12
    • Kaoru SakaiShunji MaedaHidetoshi Nishiyama
    • Kaoru SakaiShunji MaedaHidetoshi Nishiyama
    • G06K9/00H04N7/18
    • G06T7/001G06T2207/30148
    • According to the present invention, for a pattern inspection apparatus that compares images in corresponding areas of two patterns that are identical and that determines an unmatched portion between the images is a defect, a plurality of detection systems and a plurality of corresponding image comparison methods are provided. With this configuration, the affect of uneven brightnesses for a pattern that occurs due to differences in film thicknesses can be reduced, a highly sensitive pattern inspection can be performed, a variety of defects can be revealed, and the pattern inspection apparatus can be applied for processing performed within a wide range. Furthermore, the pattern inspection apparatus also includes a unit for converting the tone of image signals of comparison images for a plurality of different processing units, and when a difference in brightness occurs in the same pattern of the images, a defect can be correctly detected.
    • 根据本发明,对于对相同的两个图案的相应区域中的图像进行比较并且确定图像之间的不匹配部分的图像的图案检查装置是缺陷,多个检测系统和多个对应的图像比较方法是 提供。 利用这种结构,可以降低由于膜厚度差异而产生的图案的不均匀亮度的影响,可以进行高灵敏度图案检查,可以显示各种缺陷,并且图案检查装置可以应用于 在广泛的范围内进行处理。 此外,图案检查装置还包括用于转换多个不同处理单元的比较图像的图像信号的色调的单元,并且当在相同图案中出现亮度差时,可以正确地检测缺陷。
    • 78. 发明授权
    • Method and apparatus for detecting defects of a sample using a dark field signal and a bright field signal
    • 使用暗场信号和亮场信号来检测样本的缺陷的方法和装置
    • US07463350B2
    • 2008-12-09
    • US10981721
    • 2004-11-05
    • Hidetoshi NishiyamaMinoru YoshidaYukihiro ShibataShunji Maeda
    • Hidetoshi NishiyamaMinoru YoshidaYukihiro ShibataShunji Maeda
    • G01N21/00
    • G01N21/95684
    • Disclosed is a method and apparatus for inspecting defects of patterns of a sample at high speed and with high sensitivity while damage of the sample arising from high-power pulsed light is reduced. Light emitted from a pulsed laser light source is transmitted through a pseudo continuous-wave forming optical system having an optical system capable of reducing energy per pulse and yet maintaining the entire amount of light of the pulsed light, a beam formation optical system, and a coherence reduction optical system, and a beam deflected by a deformation illumination optical system is made to reflect on a PBS to be irradiated on a wafer. The apparatus is configured so that the diffracted light from the wafer is focused by an objective lens, transmitted through light modulation units, focused to form a plurality of images on a plurality of image sensors in a visual-field divided parallel detection unit 12, and then defects are detected by a signal processing unit.
    • 公开了一种用于在高功率脉冲光下产生的样品损坏的情况下高速且高灵敏度地检查样品的图案的缺陷的方法和装置。 从脉冲激光光源发出的光通过伪连续波形成光学系统传输,该光学系统具有能够减少每脉冲能量并且仍保持脉冲光的光量,光束形成光学系统和 相干降低光学系统和由变形照明光学系统偏转的光束在PBS上反射以照射在晶片上。 该装置被配置为使得来自晶片的衍射光被物镜聚焦,透镜通过光调制单元被聚焦以在视野分割并行检测单元12中的多个图像传感器上形成多个图像,以及 那么由信号处理单元检测到缺陷。
    • 80. 发明授权
    • Method and apparatus for detecting defects in a specimen utilizing information concerning the specimen
    • 用于利用关于样本的信息来检测样本中的缺陷的方法和装置
    • US07400393B2
    • 2008-07-15
    • US11478617
    • 2006-07-03
    • Yukihiro ShibataShunji MaedaHidetoshi Nishiyama
    • Yukihiro ShibataShunji MaedaHidetoshi Nishiyama
    • G01N21/88
    • G01N21/95607G01N2021/8822
    • This invention provides a defect inspection method and apparatus that can easily and quickly determine, from among a plurality of inspection conditions, a condition that allows for an inspection with high sensitivity. The inspection apparatus has a variety of optical functions to cover a variety of kinds of defects to be inspected (shape, material, nearby pattern, etc.). For each optical function, grayscale depths of defects that the operator wants detected and of pseudo defects that he or she wants undetected are accumulated for future use, so that conditions conducive to a higher sensitivity and a lower pseudo defect detection rate can be selected efficiently. Conditions that can be selected for optical systems include a bright-field illumination, a dark-field illumination and a bright-/dark-field composite illumination, illumination wavelength bands, polarization filters and spatial filters.
    • 本发明提供一种能够从多个检查条件中容易且快速地确定能够以高灵敏度进行检查的条件的缺陷检查方法和装置。 检查装置具有各种光学功能,可以覆盖要检查的各种缺陷(形状,材料,附近图案等)。 对于每个光学功能,操作者想要检测到的缺陷的灰度深度和他或她想要未检测到的伪缺陷被累积以供将来使用,使得可以有效地选择有利于更高灵敏度和更低伪缺陷检测率的条件。 可以选择用于光学系统的条件包括亮场照明,暗场照明和亮/暗场复合照明,照明波长带,偏振滤光器和空间滤光器。