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    • 4. 发明授权
    • Apparatus and method for electron beam inspection with projection electron microscopy
    • 用投影电子显微镜进行电子束检查的装置和方法
    • US07420167B2
    • 2008-09-02
    • US11478615
    • 2006-07-03
    • Hirohito OkudaTakashi HiroiHiroshi Makino
    • Hirohito OkudaTakashi HiroiHiroshi Makino
    • G21K7/00G01N23/00H01J3/14
    • H01J37/21G01R31/307H01J37/244H01J37/29H01J2237/216H01J2237/2443H01J2237/2446H01J2237/262
    • An apparatus and method for electron beam inspection with projection electron microscopy, is constructed so as to allow correction of changes in focus offsets due to changes in the electrically charged state particularly during inspection. The apparatus includes: a focus measure sensor unit; a focus measure calculation unit which calculates focus measure from the multiple image signals converted by the focus measure sensor unit; a focus position calculation unit which calculates the height of a confocal plane conjugate to the plane of convergence of a planar electron beam by an objective lens, on the basis of the calculated focus measure, and then calculates the focus position of the objective lens on the basis of the calculated height of the confocal plane; and a focus position correction unit which corrects the focus position of the objective lens according to the calculated focus position of the objective lens.
    • 用投影电子显微镜进行电子束检查的装置和方法被构造成允许校正由于带电状态的变化引起的焦点偏移变化,特别是在检查期间。 该装置包括:焦距测量传感器单元; 焦点测量计算单元,其从由所述焦点测量传感器单元转换的多个图像信号计算焦点测量; 焦点位置计算单元,基于计算出的焦点测量,计算由物镜与平面电子束的会聚平面共轭的高度,然后计算物镜的聚焦位置 共焦平面计算高度的基础; 以及聚焦位置校正单元,其根据计算出的物镜的聚焦位置校正物镜的聚焦位置。
    • 9. 发明申请
    • DEFECT INSPECTION METHOD, AND DEVICE THEREOF
    • 缺陷检查方法及其设备
    • US20130119250A1
    • 2013-05-16
    • US13697025
    • 2011-04-05
    • Naoki HosoyaToshifumi HondaTakashi Hiroi
    • Naoki HosoyaToshifumi HondaTakashi Hiroi
    • H01J37/28H01J37/22
    • H01J37/28G06T7/001G06T7/136G06T2207/10061G06T2207/30148H01J37/222H01L22/12
    • A conventional pattern inspection, which compares an image to be inspected with a reference image and subjects the resulting difference value to the defect detection using the threshold of defect determination, has difficulty in highly-sensitive inspection. Because defects occur only in specific circuit pattern sections, false reports occur in the conventional pattern inspections which are not based on the position. Disclosed are a defect inspection method and a device thereof which perform a pattern inspection by acquiring a GP image in advance, designating a place to be inspected and a threshold map to the GP image on the GUI, setting the identification reference of the defects, next acquiring the image to be inspected, applying the identification reference to the image to be inspected, and identifying the defects with the identification reference, thereby enabling the highly-sensitive inspection.
    • 将待检查的图像与参考图像进行比较并将得到的差分值与使用缺陷确定的阈值进行缺陷检测相对照的常规图案检查在高灵敏度检查中是困难的。 因为缺陷仅在特定的电路图形部分中发生,所以在常规图案检查中出现虚假报告,而不是基于位置。 公开了一种缺陷检查方法及其装置,其通过事先获取GP图像,指定待检查地点和GUI上的GP图像的阈值图来进行图案检查,设置缺陷的识别参考,下一步 获取要检查的图像,将所述识别参考应用于要检查的图像,以及使用所述识别参考来识别所述缺陷,由此实现高度敏感的检查。
    • 10. 发明授权
    • Defect inspection method, and device thereof
    • 缺陷检查方法及其装置
    • US08853628B2
    • 2014-10-07
    • US13697025
    • 2011-04-05
    • Naoki HosoyaToshifumi HondaTakashi Hiroi
    • Naoki HosoyaToshifumi HondaTakashi Hiroi
    • H01J37/28G06T7/00H01J37/22H01L21/66
    • H01J37/28G06T7/001G06T7/136G06T2207/10061G06T2207/30148H01J37/222H01L22/12
    • A conventional pattern inspection, which compares an image to be inspected with a reference image and subjects the resulting difference value to the defect detection using the threshold of defect determination, has difficulty in highly-sensitive inspection. Because defects occur only in specific circuit pattern sections, false reports occur in the conventional pattern inspections which are not based on the position. Disclosed are a defect inspection method and a device thereof which perform a pattern inspection by acquiring a GP image in advance, designating a place to be inspected and a threshold map to the GP image on the GUI, setting the identification reference of the defects, next acquiring the image to be inspected, applying the identification reference to the image to be inspected, and identifying the defects with the identification reference, thereby enabling the highly-sensitive inspection.
    • 将待检查的图像与参考图像进行比较并将得到的差分值与使用缺陷确定的阈值进行缺陷检测相对照的常规图案检查在高灵敏度检查中是困难的。 因为缺陷仅在特定的电路图形部分中发生,所以在常规图案检查中出现虚假报告,而不是基于位置。 公开了一种缺陷检查方法及其装置,其通过事先获取GP图像,指定待检查地点和GUI上的GP图像的阈值图来进行图案检查,设置缺陷的识别参考,下一步 获取要检查的图像,将所述识别参考应用于要检查的图像,以及使用所述识别参考来识别所述缺陷,由此实现高度敏感的检查。