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    • 10. 发明申请
    • Polymer, resist composition and patterning process
    • 聚合物,抗蚀剂组合物和图案化工艺
    • US20050282083A1
    • 2005-12-22
    • US11155837
    • 2005-06-20
    • Kenji FunatsuKoji HasegawaTsunehiro Nishi
    • Kenji FunatsuKoji HasegawaTsunehiro Nishi
    • C08F220/26G03C1/492G03F7/039
    • G03F7/0397C08F220/26
    • A polymer comprising recurring units having formulae (1) and (2) and having a weight average molecular weight of 1,000 to 50,000. In the formulae, R1 and R3 are H or CH3, R4 is alkylene, R2 is a lactone structure-containing substituent group selected from formulae (R2-1) to (R2-4) wherein Y is CH2 or O, R5 is CO2R7 when Y is CH2, or R5 is H or CO2R7 when Y is O, R6 is H or alkyl, and R7 is alkyl which may be separated by at least one oxygen atom. The polymer is used as a base resin to formulate a resist composition, especially a chemically amplified positive resist composition which has a high sensitivity, resolution and dry etch resistance and forms a resist pattern having good substrate adhesion and least roughened sidewalls.
    • 一种包含具有式(1)和(2)并且重均分子量为1,000至50,000的重复单元的聚合物。 在式中,R 1和R 3是H或CH 3,R 4是亚烷基, SUP> 2 是含有内酯结构的取代基,其选自式(R 2-2-2)至(R 2-2),其中Y是CH 当Y是CH 2时,R 2是O,R 5是CO 2 R 7, 当Y为O时,R 5为H或CO 2 R 7,R 6为H或烷基 R 7是可被至少一个氧原子分离的烷基。 该聚合物用作基础树脂以配制抗蚀剂组合物,特别是具有高灵敏度,分辨率和耐干蚀刻性的化学放大的正性抗蚀剂组合物,并形成具有良好的底物粘附性和最小粗糙化侧壁的抗蚀剂图案。