Inspection Method for Lithography
    12.
    发明申请
    Inspection Method for Lithography 有权
    光刻检验方法

    公开(公告)号:US20120044472A1

    公开(公告)日:2012-02-23

    申请号:US13264256

    申请日:2010-05-04

    IPC分类号: G03B27/52

    CPC分类号: G03F7/70641

    摘要: A method is used to determine focus of a lithographic apparatus used in a lithographic process on a substrate. The lithographic process is used to form at least two periodic structures on the substrate. Each structure has at least one feature that has an asymmetry between opposing side wall angles that varies as a different function of the focus of the lithographic apparatus on the substrate. A spectrum produced by directing a beam of radiation onto the at least two periodic structures is measured and ratios of the asymmetries are determined. The ratios and a relationship between the focus and the side wall asymmetry for each structure is used to determine the focus of the lithographic apparatus on the substrate.

    摘要翻译: 使用一种方法来确定在光刻工艺中使用的光刻设备在基板上的焦点。 光刻工艺用于在衬底上形成至少两个周期性结构。 每个结构具有至少一个特征,其具有相对的侧壁角度之间的不对称性,所述相对侧壁角度随着光刻设备在基底上的焦点的不同功能而变化。 测量通过将辐射束引导到至少两个周期性结构上产生的光谱,并且确定不对称性的比率。 使用每个结构的焦点和侧壁不对称之间的比率和关系来确定光刻设备在基底上的焦点。

    Lithographic Focus and Dose Measurement Using A 2-D Target
    13.
    发明申请
    Lithographic Focus and Dose Measurement Using A 2-D Target 有权
    使用2-D靶的光刻焦点和剂量测量

    公开(公告)号:US20110249244A1

    公开(公告)日:2011-10-13

    申请号:US13062861

    申请日:2009-10-02

    IPC分类号: G03B27/52 G03F1/00

    摘要: In order to determine whether an exposure apparatus is outputting the correct dose of radiation and its projection system is focusing the radiation correctly, a test pattern is used on a mask for printing a specific marker onto a substrate. This marker is then measured by an inspection apparatus, such as a scatterometer, to determine whether there are errors in focus and dose and other related properties. The test pattern is configured such that changes in focus and dose may be easily determined by measuring the properties of a pattern that is exposed using the mask. The test pattern may be a 2D pattern where physical or geometric properties, e.g., pitch, are different in each of the two dimensions. The test pattern may also be a one-dimensional pattern made up of an array of structures in one dimension, the structures being made up of at least one substructure, the substructures reacting differently to focus and dose and giving rise to an exposed pattern from which focus and dose may be determined.

    摘要翻译: 为了确定曝光装置是否正在输出正确剂量的辐射,并且其投影系统正确地对准辐射,在掩模上使用测试图案将特定标记物印刷到基底上。 然后通过诸如散射仪的检查装置测量该标记,以确定焦点和剂量以及其它相关性质是否存在错误。 测试图案被配置为使得可以通过测量使用掩模曝光的图案的特性容易地确定聚焦和剂量的变化。 测试图案可以是二维图案,其中物理或几何特性,例如间距,在两个维度的每一个中是不同的。 测试图案也可以是由一维结构阵列组成的一维图案,该结构由至少一个子结构构成,该子结构与焦点和剂量不同地反应并产生暴露图案, 可以确定焦点和剂量。

    Inspection method and apparatus, lithographic apparatus, lithographic processing cell and device manufacturing method
    14.
    发明授权
    Inspection method and apparatus, lithographic apparatus, lithographic processing cell and device manufacturing method 有权
    检测方法和装置,光刻设备,光刻处理单元和器件制造方法

    公开(公告)号:US07916927B2

    公开(公告)日:2011-03-29

    申请号:US11653441

    申请日:2007-01-16

    IPC分类号: G06K9/00 G06K9/62

    CPC分类号: G03F7/70625

    摘要: Building of a model profile for a target is disclosed. An embodiment of the method includes importing an image of a known object and superimposing, on this image, either by hand or automatically, an estimated profile. The estimated profile is defined mathematically and adjusted segment by segment in order to match the image such that the adjusted estimated profile may be stored alongside a diffraction spectrum associated with the image. Alternatively or additionally, a user may trace (or free-draw) the profile of a known image and subsequently map a shape-definer of a mathematical function such as a polynomial equation, a spline or a vector onto the estimated profile in order to obtain a profile and one or more variables of that profile that may be used to reconstruct the profile of an unknown object from its diffraction pattern.

    摘要翻译: 披露了目标的模型配置文件的构建。 该方法的一个实施例包括导入已知对象的图像并且在该图像上手动或自动地叠加估计的轮廓。 估计轮廓被数学地定义并且逐段地调整,以便匹配图像,使得调整的估计轮廓可以与与图像相关联的衍射谱一起存储。 或者或另外,用户可以跟踪(或自由绘制)已知图像的轮廓,并且随后将诸如多项式方程,样条或矢量的数学函数的形状定义器映射到估计轮廓上,以获得 该轮廓的轮廓和一个或多个变量可用于从其衍射图案重建未知物体的轮廓。

    Communication circuit and method for selecting a reference link
    19.
    发明申请
    Communication circuit and method for selecting a reference link 有权
    用于选择参考链路的通信电路和方法

    公开(公告)号:US20050079823A1

    公开(公告)日:2005-04-14

    申请号:US10683627

    申请日:2003-10-10

    摘要: A communication circuit (10) and method updates an active link set list (50) in an asynchronous wireless communication system. In one embodiment, the communication circuit (10) may be a wireless device (600) or any other suitable communication device. The communication circuit (10) includes candidate reference link determination circuitry (30) to receive an active link set update message (60) and in response, to create the candidate list of reference links (20) from the active link set list (50). The candidate reference link determination circuitry (30) creates the candidate list of reference links based on, for example, an indication in the received active link set update message (60) to retain links from the active link set list (50).

    摘要翻译: 通信电路(10)和方法更新异步无线通信系统中的主动链路集列表(50)。 在一个实施例中,通信电路(10)可以是无线设备(600)或任何其它合适的通信设备。 通信电路(10)包括用于接收活动链路组更新消息(60)的候选参考链路确定电路(30),并且响应于从主动链路集列表(50)创建参考链路(20)的候选列表, 。 候选参考链路确定电路(30)基于例如接收到的活动链路集更新消息(60)中的指示来保留来自活动链路集列表(50)的链路来创建参考链路的候选列表。

    Lithographic apparatus, device manufacturing method, and device manufactured thereby
    20.
    发明授权
    Lithographic apparatus, device manufacturing method, and device manufactured thereby 有权
    平版印刷设备,器件制造方法和由此制造的器件

    公开(公告)号:US06809797B2

    公开(公告)日:2004-10-26

    申请号:US10109038

    申请日:2002-03-29

    IPC分类号: G02B2768

    CPC分类号: G03F7/705 G03F7/706

    摘要: A device manufacturing method is disclosed in which the aberration of the projection system of a lithographic projection apparatus is obtained in terms of the Zernike expansion. The field distribution of displacement error and focal plane distortion of the projected image are calculated on the basis of the Zernike aberration and sensitivity coefficients which quantify the relationship between Zernike aberration components and the error in the image. A calculation is then performed to determine the compensation to apply to the apparatus in order to minimize the error in the image. The compensation is then applied to the apparatus. The compensation may comprise increasing one component of aberration of the apparatus in order to decrease the effect of another aberration, such that, on balance, the image quality as a whole is improved.

    摘要翻译: 公开了一种装置制造方法,其中光泽投影装置的投影系统的像差取得Zernike扩展。 基于Zernike像差和灵敏度系数计算投影图像的位移误差和焦平面失真的场分布,Zernike像差和灵敏度系数量化了Zernike像差分量与图像中的误差之间的关系。 然后执行计算以确定应用于装置的补偿,以使图像中的误差最小化。 然后将补偿应用于该装置。 补偿可以包括增加装置的像差的一个分量,以便减小另一个像差的影响,从而平衡地改善了整体上的图像质量。