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    • 29. 发明授权
    • Inspection method and apparatus, lithographic apparatus, lithographic processing cell and device manufacturing method
    • 检测方法和装置,光刻设备,光刻处理单元和器件制造方法
    • US07715019B2
    • 2010-05-11
    • US12423934
    • 2009-04-15
    • Antoine Gaston Marie KiersGoce Naumoski
    • Antoine Gaston Marie KiersGoce Naumoski
    • G01B11/24
    • G03F7/70625
    • A method is provided for determining an actual profile of an object printed on a substrate. The method can include receiving an actual spectrum signal associated with the object, selecting a first model profile, and generating a first model spectrum signal associated with the first model profile. The method can further include comparing the first model spectrum signal with the actual spectrum signal. If the first model spectrum signal and the actual spectrum signal do not match a desired tolerance, the aforementioned selecting, generating, and comparing can be repeated with a second model profile. The second model profile can be selected based on the first model spectrum signal having undergone an optimization process based on a number of variable parameters of the first model profile, where the number of variable parameters is reduced by approximating the first model profile to a single shape with a reduced number of variable parameters.
    • 提供了一种用于确定印刷在基板上的物体的实际轮廓的方法。 该方法可以包括接收与对象相关联的实际频谱信号,选择第一模型分布,以及生成与第一模型分布相关联的第一模型频谱信号。 该方法还可以包括将第一模型频谱信号与实际频谱信号进行比较。 如果第一模型频谱信号和实际频谱信号与期望的公差不匹配,则可以用第二模型分布重复上述选择,生成和比较。 可以基于已经经历基于第一模型轮廓的可变参数的数量的优化处理的第一模型谱信号来选择第二模型轮廓,其中通过将第一模型轮廓近似为单个形状来减少可变参数的数量 具有减少的可变参数数量。