Methodology for pattern correction
    2.
    发明授权
    Methodology for pattern correction 有权
    模式校正方法

    公开(公告)号:US09026955B1

    公开(公告)日:2015-05-05

    申请号:US14051568

    申请日:2013-10-11

    IPC分类号: G06F17/50

    摘要: The present disclosure relates to a method of integrated chip (IC) design pattern correction that reduces pattern correction cycle time by separately correcting main feature shapes and dummy shapes of the IC design, and an associated apparatus. In some embodiments, the method is performed by forming an IC design having a plurality of main feature shapes. A plurality of dummy shapes are added to the IC design to improve a process window of the IC design. The plurality of main feature shapes are corrected using a first pattern correction process. One or more of the plurality of dummy shapes are subsequently corrected using a second pattern correction process separate from the first pattern correction process. By separately correcting dummy shapes and main feature shapes, the dummy shapes can be subjected to a different pattern correction process having lower time/resource demands, thereby reducing the pattern correction cycle time.

    摘要翻译: 本公开涉及通过分开校正IC设计的主要特征形状和虚拟形状以及相关联的装置来减少图案校正周期时间的集成芯片(IC)设计图案校正的方法。 在一些实施例中,通过形成具有多个主要特征形状的IC设计来执行该方法。 将多个虚拟形状添加到IC设计中以改善IC设计的处理窗口。 使用第一图案校正处理来校正多个主要特征形状。 随后使用与第一图案校正处理分开的第二图案校正处理来校正多个虚拟形状中的一个或多个。 通过单独地校正虚拟形状和主要特征形状,可以对虚拟形状进行具有较低时间/资源需求的不同的图案校正处理,从而减少图案校正周期时间。

    Methodology for pattern density optimization

    公开(公告)号:US10049178B2

    公开(公告)日:2018-08-14

    申请号:US15170026

    申请日:2016-06-01

    IPC分类号: G06F17/50 G03F1/36

    摘要: The present disclosure relates to a method of improving pattern density with a low OPC (optical proximity correction) cycle time, and an associated apparatus. In some embodiments, the method is performed by performing an initial data preparation process on an IC design including a graphical representation of a layout used to fabricate an integrated chip. The initial data preparation process is performed by using a data preparation element to generate a modified IC design having modified shapes that are modified forms of shapes within the IC design. One or more low-pattern-density areas of the modified IC design are identified using a local density checking element. One or more dummy shapes are added within the one or more low-pattern-density areas using a dummy shape insertion element. The one or more dummy shapes are separated from the modified shapes by a non-zero space.