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    • 2. 发明授权
    • Method of analyzing morphology of bulk defect and surface defect on semiconductor wafer
    • 分析半导体晶片上体缺陷和表面缺陷形态的方法
    • US06252228B1
    • 2001-06-26
    • US09204054
    • 1998-12-03
    • Sung-hoon ChoTae-yeol Heo
    • Sung-hoon ChoTae-yeol Heo
    • G01N2304
    • H01L21/67288
    • A method of analyzing the morphology of bulk and surface defects on a semiconductor wafer includes: determining a location of the defects; marking an indication proximate the location; milling the wafer using the indication, to thereby make a specimen; and analyzing the specimen to obtain the defects' morphology. Bulk defects as deep 5-250 &mgr;m can be detected and surface defects as deep as 10 &mgr;m from the wafer's surface can be detected. Both morphology analyses preferably include using TEM (Transmission Electron Microscopy). The location determination for both defects preferably includes projecting a laser beam onto the wafer. By obtaining the morphology of the defects, the cause of failure due to the bulk defects and surface defects can accurately be investigated, increasing semiconductor devices' reliability.
    • 分析半导体晶片上的体和表面缺陷的形态的方法包括:确定缺陷的位置; 标示位置附近的指示; 使用指示研磨晶片,从而制成样品; 并分析样品以获得缺陷的形态。 可以检测到深5-250μm的体积缺陷,并且可以检测到从晶片表面深达10um的表面缺陷。 两种形态分析优选包括使用TEM(透射电子显微镜)。 两个缺陷的位置确定优选地包括将激光束投射到晶片上。 通过获得缺陷的形态,可以准确地研究由于体缺陷和表面缺陷引起的故障原因,提高半导体器件的可靠性。