申请人:Nakayama Osamu
公开号:US20130164675A1
公开(公告)日:2013-06-27
The invention provides a novel acrylic ester derivative which can form a structural unit of a polymer to be incorporated into a photoresist composition; a polymer produced through polymerization of a raw material containing the acrylic ester derivative; and a photoresist composition which contains the polymer and which, as compared with the case of conventional ones, realizes formation of a high-resolution resist pattern having improved LWR. Specifically, the present invention provides, for example, an acrylic ester derivative represented by the following formula (1):
wherein R
1
represents a hydrogen atom, a methyl group, or a trifluoromethyl group; each of R
2
, R
3
, R
5
, R
7
, R
8
, and R
10
represents a hydrogen atom, an alkyl group, a cycloalkyl group, or an alkoxy group; each of R
4
and R
6
represents a hydrogen atom, an alkyl group, a cycloalkyl group, or an alkoxy group, or R
4
and R
6
are linked together to form an alkylene group, —O—, or —S—; R
9
represents a hydrogen atom, an alkyl group, a cycloalkyl group, an alkoxy group, or —COOR
11
; R
11
represents an alkyl group; X represents —O— or >N—R
12
; R
12
represents a hydrogen atom or an alkyl group; Y represents >C═O or >S(═O)
n
; n is an integer of 0 to 2; and the wavy lines represent that either R
8
or R
9
may be in an endo or exo position.
本发明提供了一种新型的丙烯酸酯衍生物,可形成聚合物的结构单元,用于纳入到光刻胶组合物中;一种通过含有丙烯酸酯衍生物的原料聚合而成的聚合物;以及一种包含该聚合物的光刻胶组合物,与传统光刻胶相比,实现了形成具有改善LWR的高分辨率抗蚀图案。具体而言,本发明提供了例如下式(1)所表示的丙烯酸酯衍生物:其中,R1表示氢原子,甲基或三氟甲基;R2、R3、R5、R7、R8和R10中的每一个表示氢原子,烷基,环烷基或烷氧基;R4和R6中的每一个表示氢原子,烷基,环烷基或烷氧基,或者R4和R6连接在一起形成烷基,-O-或-S-;R9表示氢原子,烷基,环烷基,烷氧基或-COOR11;R11表示烷基;X表示-O-或>N-R12;R12表示氢原子或烷基;Y表示>C═O或>S(═O)n;n为0到2的整数;波浪线表示R8或R9中的任意一个可以处于内部或外部位置。