Method and system for reducing overlay errors within exposure fields by APC control strategies
    1.
    发明授权
    Method and system for reducing overlay errors within exposure fields by APC control strategies 有权
    通过APC控制策略减少曝光范围内的重叠误差的方法和系统

    公开(公告)号:US07842442B2

    公开(公告)日:2010-11-30

    申请号:US11843040

    申请日:2007-08-22

    IPC分类号: G03F9/00 G03C5/00

    CPC分类号: G03F9/7003 G03F7/70633

    摘要: By taking into consideration tool-specific distortion signatures and reticle-specific placement characteristics in an alignment control system, the control quality of sophisticated APC strategies may be significantly enhanced. Respective correction data may be established on the basis of any combinations of tool/reticles and layers to be aligned to each other, which may modify the respective target values of alignment parameters used for controlling the alignment process on the basis of standard overlay measurement data obtained from dedicated overlay marks.

    摘要翻译: 通过考虑到对准控制系统中的特定于工具的失真特征和掩模版特定放置特性,可以显着增强复杂APC策略的控制质量。 可以基于要彼此对准的工具/掩模版和层的任何组合来建立各自的校正数据,这可以基于获得的标准覆盖测量数据来修改用于控制对准过程的对准参数的各个目标值 从专用的重叠标记。

    METHOD AND SYSTEM FOR REDUCING OVERLAY ERRORS WITHIN EXPOSURE FIELDS BY APC CONTROL STRATEGIES
    2.
    发明申请
    METHOD AND SYSTEM FOR REDUCING OVERLAY ERRORS WITHIN EXPOSURE FIELDS BY APC CONTROL STRATEGIES 有权
    通过APC控制策略减少暴露场内的覆盖误差的方法和系统

    公开(公告)号:US20080057418A1

    公开(公告)日:2008-03-06

    申请号:US11843040

    申请日:2007-08-22

    IPC分类号: G03C5/00 G06F19/00

    CPC分类号: G03F9/7003 G03F7/70633

    摘要: By taking into consideration tool-specific distortion signatures and reticle-specific placement characteristics in an alignment control system, the control quality of sophisticated APC strategies may be significantly enhanced. Respective correction data may be established on the basis of any combinations of tool/reticles and layers to be aligned to each other, which may modify the respective target values of alignment parameters used for controlling the alignment process on the basis of standard overlay measurement data obtained from dedicated overlay marks.

    摘要翻译: 通过考虑到对准控制系统中的特定于工具的失真特征和掩模版特定放置特性,可以显着增强复杂APC策略的控制质量。 可以基于要彼此对准的工具/掩模版和层的任何组合来建立各自的校正数据,这可以基于获得的标准覆盖测量数据来修改用于控制对准过程的对准参数的各个目标值 从专用的重叠标记。

    METHOD AND SYSTEM FOR REDUCING OVERLAY ERRORS IN SEMICONDUCTOR VOLUME PRODUCTION USING A MIXED TOOL SCENARIO
    3.
    发明申请
    METHOD AND SYSTEM FOR REDUCING OVERLAY ERRORS IN SEMICONDUCTOR VOLUME PRODUCTION USING A MIXED TOOL SCENARIO 有权
    使用混合工具场景降低半导体体积生成中的覆盖误差的方法和系统

    公开(公告)号:US20100028790A1

    公开(公告)日:2010-02-04

    申请号:US12476578

    申请日:2009-06-02

    IPC分类号: G03F7/20 G03B27/42

    摘要: By taking into consideration the combination of the substrate holders in various lithography tools used during the imaging to two subsequent device layers, enhanced alignment accuracy may be accomplished. Furthermore, restrictive tool dedications for critical lithography processes may be significantly relaxed by providing specific overlay correction data for each possible process flow, wherein, in some illustrative embodiments, a restriction of the number of possible process flows may be accomplished by implementing a rule for selecting a predefined substrate holder when starting the processing of an associated group of substrates.

    摘要翻译: 通过考虑到在成像期间使用的各种光刻工具中的衬底保持器与两个后续器件层的组合,可以实现增强的对准精度。 此外,通过为每个可能的处理流程提供特定的覆盖校正数据,可以显着地减轻关键光刻工艺的限制性工具,其中在一些说明性实施例中,可以通过实施用于选择的规则来实现对可能的工艺流程的限制 当开始相关联的基片组的处理时,预定义的衬底保持器。

    Method and apparatus for dispatching workpieces to tools based on processing and performance history
    4.
    发明授权
    Method and apparatus for dispatching workpieces to tools based on processing and performance history 有权
    基于加工和性能历史将工件调度到工具的方法和装置

    公开(公告)号:US08155770B2

    公开(公告)日:2012-04-10

    申请号:US12415258

    申请日:2009-03-31

    摘要: Metrology data associated with a plurality of workpieces processed at a selected operation in the process flow including a plurality of operations is retrieved. A processing context associated with each of the workpieces is determined. The processing context identifies at least one previous tool used to perform an operation on the associated workpiece prior to the selected operation. A plurality of performance metrics is determined for a plurality of tools capable of performing the selected operation based on the metrology data. Each performance metric is associated with a particular tool and a particular processing context. A set of the performance metrics is identified for the plurality of tools having a processing context matching a processing context of a selected workpiece awaiting performance of the selected operation. The selected workpiece is dispatched for processing in a selected one of the plurality of tools based on the set of performance metrics.

    摘要翻译: 检索与在包括多个操作的处理流程中的所选操作处理的多个工件相关联的计量数据。 确定与每个工件相关联的处理上下文。 处理上下文在所选择的操作之前识别用于对相关联的工件执行操作的至少一个先前的工具。 针对能够基于测量数据执行所选择的操作的多个工具确定多个性能度量。 每个性能度量与特定工具和特定的处理环境相关联。 针对具有与所选择的工件等待执行所选择的操作的所选择的工件的处理环境匹配的处理环境的多个工具识别出一组性能度量。 基于所述一组性能度量,在所述多个工具中选择的一个工具中调度所选择的工件以进行处理。

    Method and system for improving exposure uniformity in a step and repeat process
    6.
    发明授权
    Method and system for improving exposure uniformity in a step and repeat process 有权
    改善步骤和重复过程中曝光均匀性的方法和系统

    公开(公告)号:US07006195B2

    公开(公告)日:2006-02-28

    申请号:US10625451

    申请日:2003-07-23

    CPC分类号: G03F7/70533 G03F7/70625

    摘要: An advanced control system for a photolithography tool that receives measurement data relating to inline parameters varying with position on a substrate surface. The position sensitive measurement data is used to establish a position dependent target offset for an exposure map, thereby effectively compensating for substrate non-uniformities. Since the inline measurement data is available significantly earlier in comparison to electrical measurement data of a completed circuit element, a more accurate exposure map may be obtained taking into account the process history of the substrates.

    摘要翻译: 一种用于光刻工具的先进控制系统,其接收与基板表面上的位置变化的在线参数相关的测量数据。 位置敏感测量数据用于建立曝光图的位置相关目标偏移量,从而有效补偿衬底不均匀性。 由于与完成的电路元件的电气测量数据相比,在线测量数据显着更早地可用,所以可以考虑衬底的工艺历史来获得更准确的曝光图。

    Method and system for reducing overlay errors in semiconductor volume production using a mixed tool scenario
    7.
    发明授权
    Method and system for reducing overlay errors in semiconductor volume production using a mixed tool scenario 有权
    使用混合工具方案减少半导体批量生产中的重叠误差的方法和系统

    公开(公告)号:US08039181B2

    公开(公告)日:2011-10-18

    申请号:US12476578

    申请日:2009-06-02

    IPC分类号: G03C5/00 G03F9/00

    摘要: By taking into consideration the combination of the substrate holders in various lithography tools used during the imaging to two subsequent device layers, enhanced alignment accuracy may be accomplished. Furthermore, restrictive tool dedications for critical lithography processes may be significantly relaxed by providing specific overlay correction data for each possible process flow, wherein, in some illustrative embodiments, a restriction of the number of possible process flows may be accomplished by implementing a rule for selecting a predefined substrate holder when starting the processing of an associated group of substrates.

    摘要翻译: 通过考虑到在成像期间使用的各种光刻工具中的衬底保持器与两个后续器件层的组合,可以实现增强的对准精度。 此外,通过为每个可能的处理流程提供特定的覆盖校正数据,可以显着地减轻关键光刻工艺的限制性工具,其中在一些说明性实施例中,可以通过实施用于选择的规则来实现对可能的工艺流程的限制 当开始相关联的基片组的处理时,预定义的衬底保持器。

    METHOD AND APPARATUS FOR DISPATCHING WORKPIECES TO TOOLS BASED ON PROCESSING AND PERFORMANCE HISTORY
    8.
    发明申请
    METHOD AND APPARATUS FOR DISPATCHING WORKPIECES TO TOOLS BASED ON PROCESSING AND PERFORMANCE HISTORY 有权
    基于加工和性能历史分配工具的工具的方法和装置

    公开(公告)号:US20100249967A1

    公开(公告)日:2010-09-30

    申请号:US12415258

    申请日:2009-03-31

    IPC分类号: G06F17/00

    摘要: Metrology data associated with a plurality of workpieces processed at a selected operation in the process flow including a plurality of operations is retrieved. A processing context associated with each of the workpieces is determined. The processing context identifies at least one previous tool used to perform an operation on the associated workpiece prior to the selected operation. A plurality of performance metrics is determined for a plurality of tools capable of performing the selected operation based on the metrology data. Each performance metric is associated with a particular tool and a particular processing context. A set of the performance metrics is identified for the plurality of tools having a processing context matching a processing context of a selected workpiece awaiting performance of the selected operation. The selected workpiece is dispatched for processing in a selected one of the plurality of tools based on the set of performance metrics.

    摘要翻译: 检索与在包括多个操作的处理流程中的所选操作处理的多个工件相关联的计量数据。 确定与每个工件相关联的处理上下文。 处理上下文在所选择的操作之前识别用于对相关联的工件执行操作的至少一个先前的工具。 针对能够基于测量数据执行所选择的操作的多个工具确定多个性能度量。 每个性能度量与特定工具和特定的处理环境相关联。 针对具有与所选择的工件等待执行所选择的操作的所选择的工件的处理环境匹配的处理环境的多个工具识别出一组性能度量。 基于所述一组性能度量,在所述多个工具中选择的一个工具中调度所选择的工件以进行处理。