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    • 7. 发明授权
    • Underlayer composition and method of imaging underlayer composition
    • 底层组合物和底层成分成像方法
    • US08822124B2
    • 2014-09-02
    • US13253012
    • 2011-10-04
    • Peter TrefonasPhillip Dene HustadCynthia Pierre
    • Peter TrefonasPhillip Dene HustadCynthia Pierre
    • G03C8/40
    • G03F7/0388B81C1/00031B81C2201/0149C08F212/08C08F220/18C08F297/026G03F7/0002G03F7/094G03F7/11G03F7/165G03F7/26
    • A method of forming a pattern comprises diffusing an acid formed by irradiating a portion of a photosensitive layer, into an underlayer comprising an acid sensitive copolymer having acid decomposable groups and attachment groups covalently bonded to the surface of the substrate and/or forming an interpolymer crosslink. Diffusing comprises heating the underlayer and photosensitive layer. The acid sensitive group reacts with the diffused acid to form a polar region on the underlayer, with the shape of the pattern. The photosensitive layer is removed, forming a self-assembling layer comprising a block copolymer having a first block with an affinity for the polar region, and a second block having less affinity for the polar region. The first block forms a domain aligned to the polar region, and the second block forms another domain aligned to the first. Removing either domain exposes a portion of the underlayer.
    • 形成图案的方法包括将通过照射感光层的一部分形成的酸扩散到包含具有酸可分解基团的酸敏感共聚物和共价键合到基材表面的附着基团和/或形成互聚物交联的底层 。 扩散包括加热底层和感光层。 酸敏感基团与扩散的酸反应,在底层上形成具有图案形状的极性区域。 去除感光层,形成包含具有对极性区域具有亲和力的第一嵌段的嵌段共聚物的自组装层和对极性区域具有较小亲和力的第二嵌段。 第一块形成与极性区对准的域,并且第二块形成与第一块对准的另一域。 删除任一域暴露了底层的一部分。