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    • 4. 发明授权
    • Formation of a composite pattern including a periodic pattern self-aligned to a prepattern
    • 形成一个复合图案,它包括一个与原图形自对齐的周期性图案
    • US09107291B2
    • 2015-08-11
    • US13683447
    • 2012-11-21
    • International Business Machines Corporation
    • Joy ChengGregory S. DoerkCharles T. RettnerDaniel P. Sanders
    • G03F7/38H05K3/00
    • H05K3/007G03F7/0002H05K2203/0548
    • A chemical pattern layer including an orientation control material and a prepattern material is formed over a substrate. The chemical pattern layer includes alignment-conferring features and additional masking features. A self-assembling material is applied and self-aligned over the chemical pattern layer. The polymeric block components align to the alignment-conferring features, while the alignment is not altered by the additional masking features. A first polymeric block component is removed selective to a second polymeric block component by an etch to form second polymeric block component portions having a pattern. A composite pattern of the pattern of an etch-resistant material within the chemical pattern layer and the pattern of the second polymeric block component portions can be transferred into underlying material layers employing at least another etch.
    • 在基板上形成包括取向控制材料和预图案材料的化学图案层。 化学图案层包括对准赋予特征和附加掩模特征。 自组装材料在化学图案层上施加并自对准。 聚合物嵌段组分与对准赋予特征对准,而对准不会被附加的掩蔽特征所改变。 通过蚀刻将第一聚合物嵌段组分选择性地除去第二聚合物嵌段组分以形成具有图案的第二聚合物嵌段组分部分。 化学图案层内的抗蚀刻材料的图案和第二聚合物嵌段组分部分的图案的复合图案可以使用至少另一种蚀刻转移到下面的材料层中。