Patent ID: 8173348
Filing Date: 2012-05-08
Classification: C07D,G03F

Abstract:
1. A method for forming a pattern, comprising: (1) a step of forming an underlayer film containing (A) a radiation-sensitive acid generator capable of generating an acid upon exposure to radiation rays or (B) a radiation-sensitive base generator capable of generating a base upon exposure to radiation rays on a substrate; (2) a step of irradiating the underlayer film with radiation rays through a mask with a predetermined pattern to obtain an exposed underlayer film portion having been selectively exposed to radiation rays through the predetermined pattern; (3) a step of forming (C) an organic thin film on the underlayer film so as to attain chemical bonding of the exposed underlayer film portion to the organic thin film formed on the exposed underlayer film portion; and; (4) a step of removing the organic thin film formed on areas of the underlayer film other than the exposed underlayer film portion, wherein the organic thin film contains an oligothiophene derivative, wherein the oligothiophene derivative contains an acid-dissociable group or a base-dissociable group, and wherein the acid-dissociable group contained in the oligothiophene derivative is shown by the following formula (6), wherein R