METHOD AND SYSTEM FOR DETERMINING A LITHOGRAPHIC PROCESS PARAMETER
    2.
    发明申请
    METHOD AND SYSTEM FOR DETERMINING A LITHOGRAPHIC PROCESS PARAMETER 审中-公开
    用于确定光刻过程参数的方法和系统

    公开(公告)号:WO2010037472A2

    公开(公告)日:2010-04-08

    申请号:PCT/EP2009006652

    申请日:2009-09-15

    CPC classification number: G03F7/70641 G03F7/705 G03F7/70516 G03F7/70625

    Abstract: The present invention relates to a method for determining parameter value related to a lithographic process by which a marker structure has been applied on a product substrate based on obtaining calibration measurement data, with an optical detection apparatus, from a calibration marker structure set on a calibration substrate, including at least one calibration marker structure created using different known values of the parameter. The method further determines a mathematical model by using said known values of said at least one parameter and by employing a regression technique on said calibration measurement data, obtains product measurement data, with said optical detection apparatus, from a product marker structure on the product substrate, with at least one product marker structure being exposed with an unknown value of said at least one parameter. Furthermore, the method determines the unknown value of at least one parameter for the product substrate from the obtained product measurement data, wherein the optical detection apparatus may be a SEM and the obtained data includes an image obtained by the SEM.

    Abstract translation: 本发明涉及一种用光学检测装置从校正标记结构中设定校准值来确定与光刻工艺相关的参数值的方法,通过该光刻工艺已经将标记结构应用于产品基板上,从而获得校准测量数据 衬底,包括使用参数的不同已知值创建的至少一个校准标记结构。 该方法通过使用所述至少一个参数的所述已知值并且通过对所述校准测量数据采用回归技术来进一步确定数学模型,使用所述光学检测装置从产品标记结构获得产品测量数据 ,至少一个产品标记结构用所述至少一个参数的未知值曝光。 此外,该方法从所获得的产品测量数据确定产品基板的至少一个参数的未知值,其中光学检测装置可以是SEM,并且所获得的数据包括通过SEM获得的图像。

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