Patent ID: 8911930
Filing Date: 2014-12-16
Classification: C08F,G03F

Abstract:
1. A method of forming a pattern, comprising the step of applying an actinic-ray- or radiation-sensitive resin composition on a substrate so as to form a film, the step of selectively exposing the film through a mask and the step of developing the exposed film with the use of a developer containing an organic solvent, wherein the actinic-ray- or radiation-sensitive resin composition contains a resin (A) whose polarity is increased by the action of an acid so that the solubility of the resin in the developer containing an organic solvent is decreased, a photoacid generator (B) that when exposed to actinic rays or radiation, generates an acid containing a fluorine atom and having a cyclic structure in its molecule, and a solvent (C), and wherein the photoacid generator (B) is contained in the composition in a ratio of 8 to 20 mass % based on the total solids of the composition, wherein the photoacid generator (B) has a structure expressed by formula (ZI) wherein each of R wherein Z each of Xf independently represents a fluorine atom or an alkyl group substituted with at least one fluorine atom, each of R L represents any one of a single bond, —COO—, —OCO—, and —CO—, and A represents an alicyclic group or a group with a nonaromatic heterocyclic structure, x is an integer of 1 to 20; y is an integer of 0 to 10 and z is an integer of 0 to 10.