Patent ID: 9360760
Filing Date: 2016-06-07
CPC Classification: C08F,C08L,C09D,G03F,H01L

Claim Text:
1. A pattern forming process comprising the steps of: applying a resist composition comprising a polymer comprising recurring units having an acid labile group-substituted carboxyl group, an acid generator and an organic solvent onto a substrate, prebaking to form a resist film, exposing the resist film to high-energy radiation, baking the film, developing the exposed resist film in an organic solvent-based developer to form a negative pattern, applying a shrink agent onto the negative pattern, the shrink agent being a solution of a polymer comprising recurring units having a tertiary amino group in a solvent selected from the group consisting of ether solvents of 6 to 12 carbon atoms, alcohol solvents of 4 to 10 carbon atoms, hydrocarbon solvents of 6 to 12 carbon atoms, ester solvents of 6 to 16 carbon atoms, and ketone solvents of 7 to 16 carbon atoms, baking, and removing the excessive shrink agent for thereby shrinking the size of spaces in the pattern.