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    • 9. 发明授权
    • Methods of patterning features in a structure using multiple sidewall image transfer technique
    • 使用多侧壁图像转移技术在结构中构图特征的方法
    • US08557675B2
    • 2013-10-15
    • US13305303
    • 2011-11-28
    • Nicholas V. LiCausi
    • Nicholas V. LiCausi
    • H01L29/06H01L21/033
    • H01L21/0337H01L21/28132H01L21/3086H01L21/32139H01L21/823431H01L27/0886H01L29/66795
    • Disclosed herein are methods of patterning features in a structure, such as a layer of material used in forming integrated circuit devices or in a semiconducting substrate, using a multiple sidewall image transfer technique. In one example, the method includes forming a first mandrel above a structure, forming a plurality of first spacers adjacent the first mandrel, forming a plurality of second mandrels adjacent one of the first spacers, and forming a plurality of second spacers adjacent one of the second mandrels. The method also includes performing at least one etching process to selectively remove the first mandrel and the second mandrels relative to the first spacers and the second spacers and thereby define an etch mask comprised of the first spacers and the second spacer and performing at least one etching process through the etch mask on the structure to define a plurality of features in the structure.
    • 本文公开了使用多侧壁图像转移技术在结构中形成特征的方法,例如用于形成集成电路器件或半导体衬底的材料层。 在一个示例中,该方法包括在结构之上形成第一心轴,形成与第一心轴相邻的多个第一间隔件,邻近第一间隔件之一形成多个第二心轴,并且形成多个第二间隔件, 第二个心轴 该方法还包括执行至少一个蚀刻工艺,以相对于第一间隔件和第二间隔件选择性地移除第一心轴和第二心轴,从而限定由第一间隔件和第二间隔件组成的蚀刻掩模,并执行至少一个蚀刻 通过结构上的蚀刻掩模处理以在结构中限定多个特征。