Methods and apparatus for detecting defects in interconnect structures
    72.
    发明授权
    Methods and apparatus for detecting defects in interconnect structures 失效
    用于检测互连结构中的缺陷的方法和装置

    公开(公告)号:US07901953B2

    公开(公告)日:2011-03-08

    申请号:US12205871

    申请日:2008-09-06

    IPC分类号: H01L21/66

    摘要: In some aspects, a method is provided for detecting a void in a test structure that comprises (a) measuring a resistance of the test structure; (b) applying a stress to the test structure at increasing levels until at least one of: (i) the measured resistance of the test structure exceeds a predetermined resistance threshold; and (ii) the stress level reaches a predetermined stress maximum; (c) detecting a void if the measured resistance of the test structure exceeds the predetermined resistance threshold; and (d) determining that the test structure is void free if the stress level reaches the predetermined stress maximum without the measured resistance of the test structure exceeding the predetermined resistance threshold. Numerous other aspects are provided.

    摘要翻译: 在一些方面,提供了一种用于检测测试结构中的空隙的方法,其包括:(a)测量测试结构的电阻; (b)以增加的水平向测试结构施加应力,直到以下至少一个:(i)测试结构的测量电阻超过预定电阻阈值; 和(ii)应力水平达到预定的应力最大值; (c)如果测试结构的测量电阻超过预定电阻阈值,则检测空隙; 以及(d)如果应力水平达到预定的应力最大值而确定测试结构无空隙,而测试结构的测量电阻不超过预定电阻阈值。 提供了许多其他方面。

    Methods for Controlling Microloading Variation in Semiconductor Wafer Layout and Fabrication
    76.
    发明申请
    Methods for Controlling Microloading Variation in Semiconductor Wafer Layout and Fabrication 有权
    控制半导体晶片布局和制造中微加载变化的方法

    公开(公告)号:US20100031211A1

    公开(公告)日:2010-02-04

    申请号:US12512932

    申请日:2009-07-30

    IPC分类号: G06F17/50

    摘要: Problematic open areas are identified in a semiconductor wafer layout. The problematic open areas have a size variation relative to one or more neighboring open areas of the layout sufficient to cause adverse microloading variation. In one embodiment, the adverse microloading variation is controlled by shifting a number of layout features to interdict the problematic open areas. In another embodiment, the adverse microloading variation is controlled by defining and placing a number of dummy layout features to shield actual layout features that neighbor the problematic open areas. In another embodiment, the adverse microloading variation is controlled by utilizing sacrificial layout features which are actually fabricated on the wafer temporarily to eliminate microloading variation, and which are subsequently removed from the wafer to leave behind the desired permanent structures.

    摘要翻译: 在半导体晶片布局中识别有问题的开放区域。 有问题的开放区域相对于布局的一个或多个相邻开放区域具有尺寸变化,足以导致不利的微加载变化。 在一个实施例中,通过移动多个布局特征来阻止有问题的开放区域来控制不利的微加载变化。 在另一个实施例中,通过限定和放置多个虚拟布局特征来屏蔽相邻有问题的开放区域的实际布局特征来控制不利的微加载变化。 在另一个实施例中,通过利用实际上在晶片上制造的牺牲布局特征来暂时控制不利的微加载变化,以消除微载荷变化,并随后从晶片上移除留下期望的永久结构。