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US07718342B2 Polymers, resist compositions and patterning process 有权
聚合物，抗蚀剂组合物和图案化工艺

Polymers, resist compositions and patterning process
Abstract:
A polymer is provided comprising recurring units having formulas (1), (2), (3), (4), (5), and (6) in amounts of 1-60 mol % (1), 1-60 mol % (2), 1-50 mol % (3), 0-60 mol % (4), 0-30 mol % (5), and 0-30 mol % (6), and having a Mw of 3,000-30,000 and a Mw/Mn of 1.5-2.5. R1, R3, R4, R7, R9, and R11 are H or CH3, Y is methylene or O, R2 is CO2R10 when Y is methylene and R2 is H or CO2R10 when Y is O, R10 is C1-C15 alkyl which may be separated by O, R5 and R6 are H or OH, R8 is a tertiary ester type acid-labile protective group, and R12 is OH-containing fluoroalkyl. A resist composition comprising the polymer has a high resolution and is improved in line edge roughness and I/G bias.
Abstract(Chinese):

提供的聚合物包含具有式（1），（2），（3），（4），（5）和（6）的重复单元，其含量为1-60mol％（1），1-60mol％ （2），1-50mol％（3），0-60mol％（4），0-30mol％（5）和0-30mol％（6），Mw为3,000〜 Mw / Mn为1.5-2.5。 R 1，R 3，R 4，R 7，R 9和R 11为H或CH 3，Y为亚甲基或O，当Y为亚甲基时，R 2为CO 2 R 10，当Y为O时，R 2为H或CO 2 R 10，R 10为C 1 -C 15烷基 由O分隔，R 5和R 6是H或OH，R 8是叔酯型酸不稳定保护基，R 12是含OH的氟代烷基。 包含聚合物的抗蚀剂组合物具有高分辨率并且在线边缘粗糙度和I / G偏压方面得到改善。

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