Patent ID: 8198016

Claim:
A resist patterning process using a positive-negative reversal, comprising at least a step in which a composition for formation of a chemically-amplified positive resist film containing a resin containing a repeating unit having an acid-labile group dissociable by an acid is applied on a processing substrate to form a resist film; a step of pattern-irradiating a high energy beam on the resist film, making an acid generated by the exposure to act on the acid-labile group, taking place a dissociation reaction in an exposed part of the acid-labile group of the resin, and forming a positive pattern by developing in an alkaline developer; a step of dissociating the acid-labile group in the positive resist pattern with a concurrent crosslinking in such a degree as not to lose its solubility in an alkaline wet-etching liquid in a positive-negative reversal step to be followed, thereby rendering a resistance with regard to an organic solvent used in a composition for formation of a reverse film used in a step of forming a reverse film to be followed; a step of forming a reverse film by using a composition for formation of a reverse film containing an organic silicon compound having a siloxane bond on the positive resist pattern rendered with the resistance; and a step of reversing the positive pattern to a negative pattern by dissolving the positive pattern rendered with the resistance into an alkaline wet-etching liquid for its removal.