Patent ID: 11880136
Assignee: SHIN-ETSU CHEMICAL CO., LTD.
Field: Optics (Instruments)
Classification: CPC G  C | IPC C  G

Claim 3:
4. A resist composition comprising
an ammonium salt and fluorine-containing polymer comprising repeat units AU having an ammonium salt structure containing a sulfonamide anion containing fluorine, but not iodine and bromine, a phenoxide anion containing fluorine, but not iodine and bromine, or an enolate anion of β-diketone containing fluorine, but not iodine and bromine, and repeat units of at least one type selected from repeat units FU-1 having a trifluoromethylalcohol group which may be substituted with an acid labile group and repeat units FU-2 having a fluorinated hydrocarbyl group,
a base polymer, and
an acid generator capable of generating a sulfonic acid, imide acid or methide acid.