SALT, RESIN, RESIST COMPOSITION AND METHOD FOR PRODUCING RESIST PATTERN
申请人:SUMITOMO CHEMICAL COMPANY, LIMITED
公开号:US20160052877A1
公开(公告)日:2016-02-25
A salt represented by the formula (I);
wherein Q
1
and Q
2
each independently represent a fluorine atom or a C
1
to C
6
perfluoroalkyl group, L
b1
represents a single bond or a divalent C
1
to C
24
saturated hydrocarbon groupwhere a methylene group may be replaced by an oxygen atom or a carbonyl group and where a hydrogen atom may be replaced by a hydroxyl group or a fluorine atom, and Y represents a hydrogen atom, a fluorine atom, or an optionally substituted C
3
to C
18
alicyclic hydrocarbon groupwhere a methylene group may be replaced by an oxygen atom, a carbonyl group or a sulfonyl group; and Ar represents a divalent C
6
to C
20
aromatic hydrocarbon group, and Z
+
represents an organic sulfonium cation or an organic iodonium cation.
ONIUM SALT, CHEMICALLY AMPLIFIED RESIST COMPOSITION, AND PATTERNING PROCESS
申请人:Shin-Etsu Chemical Co., Ltd.
公开号:US20200223796A1
公开(公告)日:2020-07-16
A novel onium salt of formula (1) and a chemically amplified resist composition comprising the same as a PAG are provided. When processed by photolithography using KrF or ArF excimer laser, EB or EUV, the resist composition has a high sensitivity and reduced acid diffusion and is improved in exposure latitude, MEF, and LWR.