Patent ID: 11966160
Assignee: JSR CORPORATION
Field: Optics (Instruments)
Classification: CPC G  C | IPC G

Claim 0:
1. A radiation-sensitive resin composition comprising:
an onium salt compound represented by formula (1′);
a resin comprising a structural unit having an acid-dissociable group;
a radiation-sensitive acid generator capable of generating an acid upon exposure, the acid having a pKa smaller than a pKa of an acid generated by the onium salt compound upon exposure; and
a solvent:, wherein EA is a substituted or unsubstituted (α+β)-valent organic group having 1 to 40 carbon atoms,
Z+ is a monovalent radiation-sensitive onium cation, and
α and β are each independently 1 or 2,
wherein the acid generated by the onium salt compound does not substantially dissociate the acid-dissociable group of the resin.