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    • 44. 发明申请
    • Test pattern and method of evaluating the transfer properties of a test pattern
    • 测试图案的测试模式和评估测试图案的转移特性的方法
    • US20070207394A1
    • 2007-09-06
    • US11713962
    • 2007-03-05
    • Uwe DerschHenning Haffner
    • Uwe DerschHenning Haffner
    • G03F1/00G03C5/00
    • G03F7/70616G03F1/36G03F1/44G03F7/70433
    • A test pattern or set of patterns, a method of evaluating the transfer properties of the pattern, and a method of determining a parameter of a transfer process (e.g., imaging process) making use of the test pattern is provided. With the test pattern, the impact of line edge roughness on a transferred pattern may be analyzed. For example, the test pattern may be based upon a lines/spaces pattern, wherein periodic structures having a well-defined period and amplitude are adjacent to the lines. A photomask is provided with the test pattern and an image of the pattern is obtained. Edges of the image are determined and, therefrom, a set of edge position data are obtained. Edge position data are fitted to a straight line to determine edge position residuals. An amplitude spectrum is calculated dependent upon spatial frequencies to obtain a amplitude/spatial frequency relationship. A ratio of determined maximum is formed.
    • 提供了一种测试图案或一组图案,评估图案的转印特性的方法以及使用该测试图案确定转印处理(例如,成像处理)的参数的方法。 利用测试图案,可以分析线边缘粗糙度对转移图案的影响。 例如,测试图案可以基于线/间隔图案,其中具有明确定义的周期和幅度的周期结构与线相邻。 光掩模被提供有测试图案并且获得图案的图像。 确定图像的边缘,由此获得一组边缘位置数据。 边缘位置数据拟合到一条直线上以确定边缘位置残差。 根据空间频率计算振幅谱,以获得幅度/空间频率关系。 形成确定的最大值的比率。
    • 46. 发明授权
    • Method for communicating a measuring position of a structural element that is to be formed on a mask
    • 用于传递要形成在掩模上的结构元件的测量位置的方法
    • US07124379B2
    • 2006-10-17
    • US10675772
    • 2003-09-30
    • Bettine BuechnerChristian RotschHenning Haffner
    • Bettine BuechnerChristian RotschHenning Haffner
    • G06F17/50
    • G03F1/84G03F1/68
    • A measuring position for finding a structural element for measuring a characteristic dimension, for instance, the critical dimension CD, which element is about to be formed on a mask, is inserted as second data information into an exchange file containing the circuit layout in a hierarchical configuration of first data information or cells representing the structural elements. To prevent the second data information, which are virtual structural elements, from being incorporated in the control instructions for mask exposure, like the first data information, as structural elements that are to be formed, the second data information does not include an allocation of a geometric shape to the measuring position, or a shape that is allocated thereto has the transparency of the background, so that there is no contrast during the exposure. The second data information can be inserted as allocated to a plane that is not converted into a control instruction.
    • 用于找到用于测量特征尺寸的结构元件的测量位置,例如将要在掩模上形成该元件的临界尺寸CD作为第二数据信息插入到包含分层的电路布局的交换文件中 构成第一数据信息或表示结构要素的单元。 为了防止作为虚拟结构要素的第二数据信息被并入作为掩模曝光的控制指令,如第一数据信息,作为要形成的结构元件,第二数据信息不包括 或者分配给其的形状具有背景的透明度,使得在曝光期间不存在对比度。 可以将第二数据信息分配给未转换为控制指令的平面。
    • 48. 发明申请
    • Method of inspecting a mask or reticle for detecting a defect, and mask or reticle inspection system
    • 检查掩模或掩模版以检测缺陷的方法,以及掩模或掩模版检查系统
    • US20050002554A1
    • 2005-01-06
    • US10611067
    • 2003-07-01
    • Steffen SchulzeHenning Haffner
    • Steffen SchulzeHenning Haffner
    • G01N21/956G06K9/00G06T7/00G09F1/00H01L21/66
    • G06T7/001G06T2207/30148
    • A method of inspecting a mask or reticle, the mask or reticle being provided with a pattern to be transferred onto a semiconductor wafer, the pattern having a defect, includes the step of creating a plurality of logical zones and uniquely associating each of said logical zones with a surface area of said pattern. Then, an inspection rule representing a characteristic sensitivity for detecting a defect is associated with each of said logical zones. An image of said pattern is then recorded and compared with a reference image of an ideal pattern for locating a defect within said pattern. One of said logical zones is then identified with said located defect and that inspection rule which is associated with said identified logical zone is retrieved from a memory. The inspection rule is then applied to a characteristic of said defect for determining, whether said defect is to be repaired. A signal can be issued in response to said determination.
    • 一种检查掩模或掩模版的方法,所述掩模或掩模版具有要转印到半导体晶片上的图案,所述图案具有缺陷,所述方法包括以下步骤:创建多个逻辑区并将每个所述逻辑区域 具有所述图案的表面积。 然后,表示用于检测缺陷的特征灵敏度的检查规则与每个所述逻辑区域相关联。 然后记录所述图案的图像,并与用于定位所述图案内的缺陷的理想图案的参考图像进行比较。 然后用所述定位的缺陷识别所述逻辑区域中的一个,并且从存储器检索与所述识别的逻辑区域相关联的检查规则。 然后将检查规则应用于所述缺陷的特征,以确定是否修复所述缺陷。 可以响应于所述确定而发出信号。