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    • 3. 发明申请
    • SUBLITHOGRAPHIC PATTERNING METHOD INCORPORATING A SELF-ALIGNED SINGLE MASK PROCESS
    • 自动对准单掩模过程的分层方案
    • US20090202952A1
    • 2009-08-13
    • US12028861
    • 2008-02-11
    • David W. AbrahamSteven E. SteenNicholas C.M. FullerFrancois Pagette
    • David W. AbrahamSteven E. SteenNicholas C.M. FullerFrancois Pagette
    • G03F7/26
    • H01L21/0337H01L21/32139
    • A method of implementing sub-lithographic patterning of a semiconductor device includes forming a first set of patterned features with a single lithography step, the initial set of patterned features characterized by a linewidth and spacing therebetween; forming a first set of sidewall spacers on the first set of patterned features, and thereafter removing the first set of patterned features so as to define a second set of patterned features based on the geometry of the first set of sidewall spacers; and performing one or more additional iterations of forming subsequent sets of sidewall spacers on subsequent sets of patterned features, followed by removal of the subsequent sets of patterned features, wherein a given set of patterned features is based on the geometry of an associated set of sidewall spacers formed prior thereto, and wherein a final of the subsequent sets of patterned features is characterized by a sub-lithographic dimension.
    • 实现半导体器件的次光刻图案化的方法包括用单个光刻步骤形成第一组图案化特征,初始的图案化特征集合以其间的线宽和间距为特征; 在所述第一组图案化特征上形成第一组侧壁间隔物,然后移除所述第一组图案特征,以便基于所述第一组侧壁间隔物的几何形状限定第二组图案特征; 以及执行在随后的图案化特征集合上形成随后的一组侧壁间隔物的一个或多个附加迭代,随后移除随后的一组图案化特征,其中给定的一组图案化特征基于相关联的一组侧壁的几何形状 间隔物在其之前形成,并且其中后续的一组图案化特征的最后的特征在于亚光刻尺寸。