Ester compound, polymer, resist composition, and patterning process
    8.
    发明授权
    Ester compound, polymer, resist composition, and patterning process 有权
    酯化合物,聚合物,抗蚀剂组合物和图案化工艺

    公开(公告)号:US07666967B2

    公开(公告)日:2010-02-23

    申请号:US11606069

    申请日:2006-11-30

    IPC分类号: C08F214/18

    摘要: A polymer comprising recurring units (2) obtained through polymerization of an ester compound of formula (1) is used to form a resist composition. R1 is F or C1-C6 fluoroalkyl, R2 is H or C1-C8 alkyl, R3 is O or C1-C6 alkylene, R4 and R5 each are H or C1-C10 alkyl or fluoroalkyl, and R6 is H or an acid labile group. The resist composition, when processed by ArF lithography, has advantages including improved resolution, transparency, minimal line edge roughness, and etch resistance. The resist composition exhibits better performance when processed by ArF immersion lithography with liquid interposed between a projection lens and a wafer.

    摘要翻译: 使用包含通过聚合式(1)的酯化合物获得的重复单元(2)的聚合物来形成抗蚀剂组合物。 R 1是F或C 1 -C 6氟代烷基,R 2是H或C 1 -C 8烷基,R 3是O或C 1 -C 6亚烷基,R 4和R 5各自是H或C 1 -C 10烷基或氟代烷基,R 6是H或酸不稳定基团 。 当通过ArF光刻处理时,抗蚀剂组合物具有改进的分辨率,透明度,最小的线边缘粗糙度和耐蚀刻性的优点。 当通过ArF浸没式光刻法处理介于投影透镜和晶片之间的液体时,抗蚀剂组合物表现出更好的性能。