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    • 2. 发明公开
    • COMPOSITION FOR FORMING SILICON-CONTAINING EUV RESIST UNDERLAYER FILM
    • ZUSAMMENSETZUNG ZUR BILDUNG EINER SILICIUMHALTIGEN EUV-LACK-UNTERSCHICHTFOLIE
    • EP2765457A1
    • 2014-08-13
    • EP12838943.4
    • 2012-10-02
    • Nissan Chemical Industries, Ltd.
    • SHIGAKI, ShuheiYAGUCHI, HiroakiSAKAMOTO, RikimaruHO, Bang-ching
    • G03F7/11H01L21/027
    • H01L21/311B05D3/0272C08G77/24C08G77/26C08G77/80C09D183/04C09D183/08G03F7/0752G03F7/11G03F7/2004G03F7/38G03F7/40H01L21/02107H01L21/02112H01L21/02123H01L21/02137H01L21/3081
    • There is provided a resist underlayer film for lithography that improves the exposure sensitivity of an EUV resist, and generates a small amount of out gases during the exposure to EUV light, and to provide a resist underlayer film forming composition for forming the underlayer film. A resist underlayer film forming composition for EUV lithography, comprising: as a silane, a hydrolyzable silane, a hydrolyzate of the hydrolyzable silane, a hydrolysis condensate of the hydrolyzable silane, or a mixture of any of the hydrolyzable silane, the hydrolyzate, and the hydrolysis condensate, wherein the hydrolyzable silane includes a combination of tetramethoxysilane, an alkyltrimethoxysilane, and an aryltrialkoxysilane, and the aryltrialkoxysilane is represented by formula (1):

               (R 2 ) n2- R 1 -(CH 2 ) n1 -Si(X) 3      Formula (1)

      (in formula (1), R 1 is an aromatic ring consisting of a benzene ring or a naphthalene ring or a ring including an isocyanuric acid structure, R 2 is a substituent replacing a hydrogen atom on the aromatic ring and is a halogen atom or a C 1-10 alkoxy group, and X is a C 1-10 alkoxy group, a C 2-10 acyloxy group, or a halogen group).
    • 提供了一种用于光刻的抗蚀剂下层膜,其提高了EUV抗蚀剂的曝光灵敏度,并且在曝光于EUV光下产生少量的外部气体,并且提供了用于形成下层膜的抗蚀剂下层膜形成组合物。 一种用于EUV光刻的抗蚀剂下层膜形成组合物,包括:作为硅烷,可水解硅烷,可水解硅烷的水解产物,可水解硅烷的水解缩合物,或任何可水解硅烷,水解产物和 水解缩合物,其中可水解硅烷包括四甲氧基硅烷,烷基三甲氧基硅烷和芳基三烷氧基硅烷的组合,芳基三烷氧基硅烷由式(1)表示:€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ )n2- R 1 - (CH 2)n1 -Si(X)3€ƒ€ƒ€ƒƒFormula(1)(式(1)中,R 1是由苯环或 萘环或包含异氰脲酸结构的环,R 2为取代芳环上的氢原子的取代基,为卤原子或C 1-10烷氧基,X为碳原子数1〜10的烷氧基, C 2-10酰氧基或卤素基团)。