SPIN-ON SPACER MATERIALS FOR DOUBLE- AND TRIPLE-PATTERNING LITHOGRAPHY
    1.
    发明申请
    SPIN-ON SPACER MATERIALS FOR DOUBLE- AND TRIPLE-PATTERNING LITHOGRAPHY 审中-公开
    用于双重和三维图案的旋转间隔材料

    公开(公告)号:WO2010080789A2

    公开(公告)日:2010-07-15

    申请号:PCT/US2010020199

    申请日:2010-01-06

    Abstract: Novel double- and triple-patterning methods are provided. The methods involve applying a shrinkable composition to a patterned template structure (e.g., a structure having lines) and heating the composition. The shrinkable composition is selected to possess properties that will cause it to shrink during heating, thus forming a conformal layer over the patterned template structure. The layer is then etched to leave behind pre-spacer structures, which comprise the features from the pattern with remnants of the shrinkable composition adjacent the feature sidewalls. The features are removed, leaving behind a doubled pattern. In an alternative embodiment, an extra etch step can be carried out prior to formation of the features on the template structure, thus allowing the pattern to be tripled rather than doubled.

    Abstract translation: 提供了新的双重和三重图案化方法。 所述方法包括将可收缩的组合物应用于图案化的模板结构(例如,具有线的结构)并加热组合物。 可收缩组合物被选择为具有使其在加热期间收缩的性质,从而在图案化模板结构上形成共形层。 然后蚀刻该层以留下预间隔结构,其包含来自图案的特征,其中可收缩组合物的残余物邻近特征侧壁。 功能被删除,留下了一倍的模式。 在替代实施例中,可以在模板结构上形成特征之前执行额外蚀刻步骤,从而允许图案增加三倍而不是加倍。

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