Invention Grant
- Patent Title: Composition for forming a resist upper-layer film and method for producing a semiconductor device using the composition
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Application No.: US15324542Application Date: 2015-07-23
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Publication No.: US10042258B2Publication Date: 2018-08-07
- Inventor: Noriaki Fujitani , Takafumi Endo , Rikimaru Sakamoto
- Applicant: NISSAN CHEMICAL INDUSTRIES, LTD.
- Applicant Address: JP Tokyo
- Assignee: NISSAN CHEMICAL INDUSTRIES, LTD.
- Current Assignee: NISSAN CHEMICAL INDUSTRIES, LTD.
- Current Assignee Address: JP Tokyo
- Agency: Oliff PLC
- Priority: JP2014-150975 20140724
- International Application: PCT/JP2015/070909 WO 20150723
- International Announcement: WO2016/013598 WO 20160128
- Main IPC: G03F7/004
- IPC: G03F7/004 ; G03F7/11 ; G03F7/20 ; G03F7/16 ; G03F7/38 ; G03F7/32 ; G03F7/40 ; G03F7/038 ; G03F7/039 ; C09D161/06 ; C09D125/16 ; H01L21/027 ; G03F7/09 ; C08F220/22 ; C08F220/18 ; C08F220/30 ; H01L21/311

Abstract:
This composition for forming an extreme-ultraviolet (EUV) or electron-beam upper-layer resist film including (a) a polymer (P) and (b) a solvent, the solvent containing 1 to 13 mass % of a C4-12 ketone compound with respect to the entire solvent, is used in the lithography process of a procedure for manufacturing a semiconductor device. Without needing to be intermixed with a resist, and particularly on the occasion of EUV exposure, the composition for forming an EUV or electron-beam upper-layer resist film blocks undesirable exposure light, e.g., ultraviolet (UV) or deep ultraviolet (DUV) rays, and selectively transmits only the EUV rays, and can be developed using a developing solution after exposure.
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