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.
ONIUM SALT, CHEMICALLY AMPLIFIED RESIST COMPOSITION AND PATTERNING PROCESS
申请人:Shin-Etsu Chemical Co., Ltd.
公开号:US20200369605A1
公开(公告)日:2020-11-26
An onium salt of formula (1) and a chemically amplified resist composition comprising the same as a PAG are provided. When processed by lithography, the resist composition exhibits a high sensitivity, minimal LWR and improved CDU independent of whether it is of positive or negative tone.
NOVEL SALT COMPOUND, CHEMICALLY AMPLIFIED RESIST COMPOSITION, AND PATTERNING PROCESS
申请人:Shin-Etsu Chemical Co., Ltd.
公开号:US20200159115A1
公开(公告)日:2020-05-21
A novel salt having an amide bond in its anion structure is provided. A chemically amplified resist composition comprising the salt has advantages including minimal defects and improved values of sensitivity, LWR, MEF and CDU, when processed by lithography using high-energy radiation such as KrF excimer laser, ArF excimer laser, EB or EUV.
MONOMER, POLYMER, POSITIVE RESIST COMPOSITION, AND PATTERNING PROCESS
申请人:Shin-Etsu Chemical Co., Ltd.
公开号:US20170008982A1
公开(公告)日:2017-01-12
A polymer comprising recurring units derived from a polymerizable monomer having two structures of hydroxyphenyl methacrylate having a hydroxy group substituted with an acid labile group is used as base resin in a positive resist composition, especially chemically amplified positive resist composition. The resist composition forms a resist film which is processed by lithography into a pattern of good profile having a high resolution, minimal edge roughness, and etch resistance.
SULFONIUM SALT, CHEMICALLY AMPLIFIED RESIST COMPOSITION, AND PATTERNING PROCESS
申请人:Shin-Etsu Chemical Co., Ltd.
公开号:US20220107560A1
公开(公告)日:2022-04-07
A sulfonium salt having formula (1) is novel. A chemically amplified resist composition comprising the sulfonium salt as a PAG has advantages including solvent solubility and improved lithography properties such as EL and LWR when processed by photolithography using high-energy radiation such as KrF or ArF excimer laser, EB or EUV.