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    • 7. 发明授权
    • Semiconductor device with core and periphery regions
    • 具有核心和外围区域的半导体器件
    • US06995437B1
    • 2006-02-07
    • US10869774
    • 2004-06-16
    • Hiroyuki KinoshitaYu SunBasab BanerjeeChristopher M. FosterJohn R. BehnkeCyrus Tabery
    • Hiroyuki KinoshitaYu SunBasab BanerjeeChristopher M. FosterJohn R. BehnkeCyrus Tabery
    • H01L31/119
    • H01L27/105H01L27/11568H01L27/11573
    • A method for forming a semiconductor device that includes a line and space pattern with variable pitch and critical dimensions in a layer on a substrate. The substrate includes a first region (e.g., a core region) and a second region (e.g., a periphery region). A first sub-line and space pattern in the first region comprises a space of a dimension (A) less than achievable by lithographic processes alone. Further, a second sub-line and space pattern in the second region comprises at least one line including a second critical dimension (B) achievable by lithography. The method uses two critical masking steps to form a hard mask that includes in the core region a critical dimension (A) less than achievable at a resolution limit of lithography. Further, the method uses a single etch step to transfer the pattern of the hard mask to the layer.
    • 一种用于形成半导体器件的方法,其包括在衬底上的层中具有可变节距和临界尺寸的线和间隔图案。 衬底包括第一区域(例如芯区域)和第二区域(例如,周边区域)。 第一区域中的第一子线和空间图案包括尺寸(A)的空间小于单独通过光刻工艺可实现的尺寸。 此外,第二区域中的第二子线和空间图案包括至少一条线,其包括通过光刻可实现的第二临界尺寸(B)。 该方法使用两个关键的掩模步骤来形成硬掩模,其在芯部区域中包括小于在光刻的分辨率极限下可实现的临界尺寸(A)。 此外,该方法使用单个蚀刻步骤将硬掩模的图案转移到该层。