Process window compliant corrections of design layout
    6.
    发明授权
    Process window compliant corrections of design layout 有权
    过程窗口符合设计布局校正

    公开(公告)号:US07313508B2

    公开(公告)日:2007-12-25

    申请号:US10330929

    申请日:2002-12-27

    IPC分类号: G06F17/50

    CPC分类号: G03F1/36

    摘要: The invention provides a method of performing process window compliant corrections of a design layout. The invention includes an operator performing the following steps: (1) simulating Develop Inspect Critical Dimension (DI CD) at best exposure conditions using the provided original layout pattern; (2) simulating DI CD at predefined boundary exposure conditions using the provided original layout pattern; (3) if the DI CD from step (1) meets the target DI CD definition, and the DI CD from step (2) meets process window specifications, convergence takes place; and (4) modifying the layout pattern and repeating steps (2) through (3) until DI CD from step (2) reaches the specification limit if any portion of step (3) is not achieved.

    摘要翻译: 本发明提供了一种执行设计布局的兼容过程窗口校正的方法。 本发明包括一个操作员执行以下步骤:(1)使用提供的原始布局模式在最佳曝光条件下模拟发现检查临界尺寸(DI CD); (2)使用提供的原始布局图案在预定边界曝光条件下模拟DI CD; (3)如果来自步骤(1)的DI CD符合目标DI CD定义,并且步骤(2)的DI CD符合过程窗口规范,则会发生收敛; (4)如果没有实现步骤(3)的任何部分,则修改布局图案并重复步骤(2)至(3),直到来自步骤(2)的DI CD达到规格极限。

    Process and apparatus for applying apodization to maskless optical direct write lithography processes
    7.
    发明申请
    Process and apparatus for applying apodization to maskless optical direct write lithography processes 审中-公开
    用于将无切削光学直写式光刻工艺进行变迹的工艺和设备

    公开(公告)号:US20050151949A1

    公开(公告)日:2005-07-14

    申请号:US10988087

    申请日:2004-11-12

    IPC分类号: G03F7/20 G03B27/42 G03B27/54

    摘要: The present invention provides methods and apparatus for accomplishing a phase shift lithography process using a blocker to block zero order light to improve image quality for phase shift lithography systems and methodologies. A maskless lithography system is provided. The lithography system provided uses a phase shift pattern generator which projects a phase shift image pattern along an optical path onto a photoimageable layer of a substrate in order to facilitate pattern transfer. A blocking element is interposed in the optical path to block zero order light in the image pattern, thereby improving image quality.

    摘要翻译: 本发明提供了用于完成相移光刻工艺的方法和装置,该方法和装置使用阻滞剂来阻挡零级光以改善相移光刻系统和方法的图像质量。 提供无掩模光刻系统。 提供的光刻系统使用相移图案发生器,其将沿着光路的相移图像图案投影到基板的可光成像层上,以便于图案转印。 阻挡元件插入在光路中以阻挡图像图案中的零级光,从而提高图像质量。

    Reflectivity optimization for multilayer stacks
    9.
    发明授权
    Reflectivity optimization for multilayer stacks 失效
    多层堆叠的反射率优化

    公开(公告)号:US07634389B2

    公开(公告)日:2009-12-15

    申请号:US10718824

    申请日:2003-11-21

    CPC分类号: G02B5/0833 G02B27/0012

    摘要: A method for obtaining an optimal reflectivity value for complex multilayer stacks is disclosed. Aspects of the present invention include generating a model of a multilayer stack and parameterizing each layer by a thickness and an index of refraction; allowing a user to input values for the parameters; calculating an extrema for a cost function of reflectivity R using the input parameter values; calculating sensitivity values S for the extrema points; and obtaining an optimal value by calculating a cost function R+S.

    摘要翻译: 公开了一种用于获得复杂多层堆叠的最佳反射率值的方法。 本发明的方面包括生成多层堆叠的模型,并且通过厚度和折射率将每层参数化; 允许用户输入参数的值; 使用输入参数值计算反射率R的成本函数的极值; 计算极值点的灵敏度值S; 并通过计算成本函数R + S获得最优值。

    OPC based illumination optimization with mask error constraints
    10.
    发明申请
    OPC based illumination optimization with mask error constraints 有权
    基于OPC的照明优化与掩模误差约束

    公开(公告)号:US20050196681A1

    公开(公告)日:2005-09-08

    申请号:US10794683

    申请日:2004-03-05

    IPC分类号: G03F9/00 G06F17/50

    摘要: A method and system of optimizing the illumination of a mask in a photolithography process. A specific, preferred method includes the steps of: loading minimum design rules of a layout, loading exposure latitude constraints, loading mask error constraints, loading initial illumination conditions, simulating current illumination conditions, obtaining dose-to-print threshold from the minimum design rules (i.e., lines-and-space feature), applying OPC on the layout using the dose-to-print threshold, calculating DOF using the exposure latitude and mask error constraints, changing the illumination conditions in order to attempt to maximize common DOF with the exposure latitude and mask error constraints, and continuing the process until maximum common DOF is obtained.

    摘要翻译: 一种在光刻工艺中优化掩模照明的方法和系统。 具体的,优选的方法包括以下步骤:加载布局的最小设计规则,加载曝光宽容约束,加载掩码误差约束,加载初始照明条件,模拟当前照明条件,从最小设计规则获得剂量到打印阈值 (即线和空间特征),使用剂量到打印阈值在布局上应用OPC,使用曝光宽容度和掩模误差约束计算DOF,改变照明条件,以便尝试最大化常见DOF 曝光宽容度和掩模误差约束,并持续该过程,直到获得最大共同DOF。