Patent ID: 9448482
Filing Date: 2016-09-20
CPC Classification: G03F,H01L

Claim Text:
1. A pattern forming method comprising: (1) forming a film by an actinic ray-sensitive or radiation-sensitive resin composition containing a resin (A) capable of increasing the polarity by the action of an acid so that a solubility thereof in a developer containing an organic solvent is decreased; (2) exposing the film; (3) developing the film by a developer including an organic solvent to form a negative pattern having a space part obtained by removing a part of the film and a residual film part which is not removed by the developing; (4) forming a resist film for reversing a pattern, on the negative pattern, so as to be embedded in the space part in the negative pattern; and (5) reversing the negative pattern into a positive pattern by removing the residual film part in the negative pattern by using an alkaline wet etching liquid, wherein: in the step (4) of forming a resist film for reversing a pattern, a resist film for reversing a pattern is formed from a composition containing an organic silicon compound having a siloxane bond; and the organic silicon compound contains at least one substituent selected from the group consisting of a carboxyl group, a hydroxyl group, a phenolic hydroxyl group, an α-trifluoromethylhydroxyl group, and a lactone ring.