Patent ID: 8802348
Filing Date: 2014-08-12
Classification: C08F,G03F

Abstract:
1. A radiation-sensitive resin composition comprising: (A) an acid labile group-containing resin, which becomes alkali-soluble by an action of an acid, and which comprises a repeating unit having a lactone skeleton; (B) a radiation-sensitive acid generator; and (C) a solvent, the resin (A) comprising repeating units shown by formulas (1) and (2), wherein a content of the repeating unit shown by formula (1) in the resin (A) is from 5 to 20 mol %, a content of the repeating unit shown by formula (2) in the resin (A) is from 5 to 50 mol %, and a content of the repeating unit having a lactone skeleton in the resin (A) is not more than 41.9 mol %, wherein the repeating unit shown by the formula (2) comprises at least one repeating unit selected from repeating units derived from compounds shown by formulas (M-2-1) and (M-2-2), wherein the repeating unit having a lactone skeleton in the resin (A) is derived from a compound shown by a formula (M-3),