Patent ID: 9411230
Filing Date: 2016-08-09
CPC Classification: G03F

Claim Text:
1. A pattern forming method comprising: (1) a step of forming a film by using an electron beam-sensitive or extreme ultraviolet-sensitive resin composition, (2) a step of exposing the film by using an electron beam or an extreme ultraviolet ray, and (3) a step of developing the exposed film by using an organic solvent-containing developer, wherein the electron beam-sensitive or extreme ultraviolet-sensitive resin composition contains (A) a resin containing (R) a repeating unit having a structural moiety capable of decomposing upon irradiation with an electron beam or an extreme ultraviolet ray to generate an acid, and (B) a solvent, and wherein the resin (A) contains a repeating unit represented by formula (I) wherein each of R each of X Ar n represents an integer of 1 to 4.