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    • 3. 发明授权
    • Method and apparatus for numerically analyzing grain growth on semiconductor wafer using SEM image
    • 使用SEM图像对半导体晶片上的晶粒生长进行数值分析的方法和装置
    • US06870948B2
    • 2005-03-22
    • US09977238
    • 2001-10-16
    • Chung-sam JunSang-Mun ChonSang-Bong ChoiKye-Weon KimSang-Hoon LeeYu-Sin YangSang-Min KimSang-Kil Lee
    • Chung-sam JunSang-Mun ChonSang-Bong ChoiKye-Weon KimSang-Hoon LeeYu-Sin YangSang-Min KimSang-Kil Lee
    • G01B15/00G01B15/08G01N15/00G01N15/14G01N23/20G01N23/225G06T1/00G06T7/00H01L21/66G06K9/00H01L21/8242
    • G06T7/0004G01N15/1475G01N2015/0092G06T2207/30148H01J2237/2815
    • A method and apparatus for numerically analyzing a growth degree of grains grown on a surface of a semiconductor wafer, in which the growth degree of grains is automatically calculated and numerated through a computer by using an image file of the surface of the semiconductor wafer scanned by an SEM. A predetermined portion of a surface of the wafer is scanned using the SEM, and the scanned SEM image is simultaneously stored into a database. An automatic numerical program applies meshes to an analysis screen frame and selects an analysis area on a measured image. Thereafter, a smoothing process for reducing an influence of noise is performed on respective pixels designated by the meshes using an average value of image data of adjacent pixels. A standardization process is then performed, based on respective images in order to remove a brightness difference between the measured images. After comparing standardized image data values of the respective pixels with a predetermined threshold value, the number of pixels whose standardized image data value is greater than the threshold value is counted. The growth degree of grains on the surface of the wafer is calculated by numerating a ratio of the counted number with respect to a total number of the pixels contained within the analysis target image.
    • 一种用于数值分析生长在半导体晶片的表面上的晶粒的生长度的方法和装置,其中通过使用由半导体晶片的表面扫描的半导体晶片的表面的图像文件自动计算和计算晶粒的生长度 SEM。 使用SEM扫描晶片的表面的预定部分,并将扫描的SEM图像同时存储到数据库中。 自动数值程序将网格应用于分析屏幕框架,并在测量图像上选择分析区域。 此后,使用相邻像素的图像数据的平均值对由网格指定的各个像素执行用于减少噪声的影响的平滑处理。 然后基于相应的图像执行标准化处理,以便去除所测量的图像之间的亮度差异。 在将各像素的标准化图像数据值与预定阈值进行比较之后,对标准化图像数据值大于阈值的像素数进行计数。 通过对计数的数量相对于分析对象图像中包含的像素的总数的比率进行计算来计算晶片表面上的晶粒的生长度。
    • 4. 发明授权
    • Method of inspecting for defects and apparatus for performing the method
    • 检查缺陷的方法和执行该方法的装置
    • US07486392B2
    • 2009-02-03
    • US11476651
    • 2006-06-29
    • Yu-Sin YangChung-Sam JunKi-Suk ChungTae-Sung KimByung-Sug Lee
    • Yu-Sin YangChung-Sam JunKi-Suk ChungTae-Sung KimByung-Sug Lee
    • G01N21/00
    • G01N21/9501G01N21/4738
    • In a method of inspecting an object, a first light is irradiated onto a bare object and a first reflection signal is reflected from the bare object. A second light is irradiated onto a processed object and a second reflection signal is reflected from the processed object. The first and second reflection signals are differentiated, to thereby generate respective first and second differential signals. A defect on the processed object is detected by a comparison between the first and second differential signals. The first and second differential signals overlap with each other and at least one signal-deviation portion is detected. The first and second differential signals are spaced apart out of an allowable error range in the signal-deviation portion. The defect is detected from a portion of the processed object corresponding to the signal-deviation portion.
    • 在检查物体的方法中,将第一光照射到裸物体上,并且从裸物体反射第一反射信号。 将第二光照射到经处理的物体上,并且第二反射信号从被处理物体反射。 第一和第二反射信号被微分,从而产生相应的第一和第二差分信号。 通过第一和第二差分信号之间的比较来检测被处理对象的缺陷。 第一和第二差分信号彼此重叠并且检测至少一个信号偏离部分。 第一和第二差分信号在信号偏差部分的允许误差范围之外是间隔开的。 从对应于信号偏离部分的处理对象的一部分检测缺陷。
    • 5. 发明申请
    • Method of inspecting for defects and apparatus for performing the method
    • 检查缺陷的方法和执行该方法的装置
    • US20070002317A1
    • 2007-01-04
    • US11476651
    • 2006-06-29
    • Yu-Sin YangChung-Sam JunKi-Suk ChungTae-Sung KimByung-Sug Lee
    • Yu-Sin YangChung-Sam JunKi-Suk ChungTae-Sung KimByung-Sug Lee
    • G01N21/88
    • G01N21/9501G01N21/4738
    • In a method of inspecting an object, a first light is irradiated onto a bare object and a first reflection signal is reflected from the bare object. A second light is irradiated onto a processed object and a second reflection signal is reflected from the processed object. The first and second reflection signals are differentiated, to thereby generate respective first and second differential signals. A defect on the processed object is detected by a comparison between the first and second differential signals. The first and second differential signals overlap with each other and at least one signal-deviation portion is detected. The first and second differential signals are spaced apart out of an allowable error range in the signal-deviation portion. The defect is detected from a portion of the processed object corresponding to the signal-deviation portion.
    • 在检查物体的方法中,将第一光照射到裸物体上,并且从裸物体反射第一反射信号。 将第二光照射到经处理的物体上,并且第二反射信号从被处理物体反射。 第一和第二反射信号被微分,从而产生相应的第一和第二差分信号。 通过第一和第二差分信号之间的比较来检测被处理对象的缺陷。 第一和第二差分信号彼此重叠并且检测至少一个信号偏离部分。 第一和第二差分信号在信号偏差部分的允许误差范围之外是间隔开的。 从对应于信号偏离部分的处理对象的一部分检测缺陷。
    • 10. 发明申请
    • Method of inspecting defects and apparatus for performing the same
    • 检查缺陷的方法及其执行装置
    • US20060082766A1
    • 2006-04-20
    • US11253028
    • 2005-10-17
    • Joung-Soo KimSang-Mun ChonChung-Sam JunYu-Sin Yang
    • Joung-Soo KimSang-Mun ChonChung-Sam JunYu-Sin Yang
    • G01N21/88
    • G01N21/95607G01N21/21G01N21/47
    • In a method of inspecting defects, a first actual region of an actual object is inspected based on a first characteristic parameter as an inspection condition. A point where an inspection region of the actual object is changed into a second actual region from the first actual region is determined. The second actual region is then inspected based on a second characteristic parameter as the inspection condition. The first and second parameters may include contrast of a light that is reflected from a reference object, intensity of the light, brightness of the light, a size of a minute structure on the reference object, etc. The characteristic parameters of each reference region on the reference object are set. Thus, the defects may be accurately classified so that a time and a cost for reviewing the defects may be markedly reduced.
    • 在检查缺陷的方法中,基于作为检查条件的第一特征参数来检查实际物体的第一实际区域。 确定实际物体的检查区域从第一实际区域变为第二实际区域的点。 然后基于作为检查条件的第二特征参数检查第二实际区域。 第一和第二参数可以包括从参考对象反射的光的对比度,光的强度,光的亮度,参考对象上的微小结构的大小等。每个参考区域的特征参数在 参考对象被设置。 因此,可以将缺陷精确地分类,从而可以显着降低检查缺陷的时间和成本。