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    • 31. 发明授权
    • Automated optimization of device structure during circuit design stage
    • 电路设计阶段器件结构自动化优化
    • US07818692B2
    • 2010-10-19
    • US11946937
    • 2007-11-29
    • Dureseti ChidambarraoJason HibbelerRichard Q. Williams
    • Dureseti ChidambarraoJason HibbelerRichard Q. Williams
    • G06F17/50G06F9/45
    • G06F17/5081
    • A method of improving a circuit design for a very large scale integrated circuit is provided which represents a plurality of semiconductor devices interconnected in a circuit. It is determined whether an edge of a feature of one of the plurality of semiconductor devices in the design can be moved in a first direction by a distance within a permitted range, such that a performance goal and a matching goal for the circuit are served. If so, the edge is moved in the first direction by the distance calculated to best serve the performance goal and the matching goal. The foregoing steps may be repeated for each of the plurality of semiconductor devices. If necessary, the foregoing steps may be repeated until the performance goal and matching goal for the circuit are deemed to be adequately served.
    • 提供了一种改进用于大规模集成电路的电路设计的方法,其表示在电路中互连的多个半导体器件。 确定设计中的多个半导体器件中的一个的特征的边缘是否可以在第一方向上移动允许范围内的距离,使得提供电路的性能目标和匹配目标。 如果是这样,边缘沿第一个方向移动计算的距离,以最佳地满足性能目标和匹配目标。 对于多个半导体器件中的每一个可以重复上述步骤。 如果需要,可以重复上述步骤,直到电路的性能目标和匹配目标被认为是充分的。
    • 35. 发明申请
    • METHOD FOR COMPUTING THE SENSITIVITY OF A VLSI DESIGN TO BOTH RANDOM AND SYSTEMATIC DEFECTS USING A CRITICAL AREA ANALYSIS TOOL
    • 使用关键区域分析工具计算VLSI设计对两个随机和系统缺陷的灵敏度的方法
    • US20070240085A1
    • 2007-10-11
    • US11279300
    • 2006-04-11
    • Jeanne BickfordJason HibbelerJuergen Koehl
    • Jeanne BickfordJason HibbelerJuergen Koehl
    • G06F17/50G06F19/00
    • G06F17/5081
    • A method of estimating integrated circuit yield comprises providing an integrated circuit layout and a set of systematic defects based on a manufacturing process. Next, the method represents a systematic defect by modifying structures in the integrated circuit layout to create modified structures. More specifically, for short-circuit-causing defects, the method pre-expands the structures when the structures comprise a higher systematic defect sensitivity level, and pre-shrinks the structures when the structures comprise a lower systematic defect sensitivity level. Following this, a critical area analysis is performed on the integrated circuit layout using the modified structures, wherein dot-throwing, geometric expansion, or Voronoi diagrams are used. The method then computes a fault density value, random defects and systematic defects are computed. The fault density value is subsequently compared to a predetermined value, wherein the predetermined value is determined using test structures and/or yield data from a target manufacturing process.
    • 估计集成电路产量的方法包括基于制造过程提供集成电路布局和一组系统缺陷。 接下来,该方法通过修改集成电路布局中的结构以产生修改的结构来表示系统缺陷。 更具体地,对于短路导致的缺陷,当结构包括较高的系统缺陷灵敏度水平时,该方法预先扩展结构,并且当结构包括较低的系统缺陷灵敏度水平时预结构。 接下来,使用改进的结构对集成电路布局进行关键区域分析,其中使用点投掷,几何展开或Voronoi图。 然后,该方法计算故障密度值,计算随机缺陷和系统缺陷。 随后将故障密度值与预定值进行比较,其中使用来自目标制造过程的测试结构和/或屈服数据确定预定值。