Abstract:
A pattern forming method includes: (a) forming a first film on a substrate using an actinic ray-sensitive or radiation-sensitive resin composition (I) containing a resin of which solubility in a developer containing an organic solvent decreases due to polarity increased by an action of an acid; (b) exposing the first film; (c) developing the exposed first film using a developer containing an organic solvent to form a first negative pattern; (e) forming a second film on the substrate using an actinic ray-sensitive or radiation-sensitive resin composition (II) containing a resin of which solubility in a developer containing an organic solvent decreases due to polarity increased by an action of an acid; (f) exposing the second film; and (g) developing the exposed second film using a developer containing an organic solvent to form a second negative pattern in this order.
Abstract:
PROBLEM TO BE SOLVED: To provide a pattern forming method in which an ultra fine line-and-space pattern (line-and-space pattern whose line width and space width are 40 nm or less, for example) can be easily formed, a method of manufacturing an electronic device, and an electronic device.SOLUTION: There is provided a pattern forming method which includes steps of, in this order: (a) forming a first film on a substrate by using active ray-sensitive or radiation-sensitive resin composition (I) containing resin whose polarity increases due to an action of acid and solubility to developer containing organic solvent decreases; (b) exposing the first film; (c) developing the exposed first film by using developer containing organic solvent and forming a first negative pattern; (e) forming a second film on the substrate by using active ray-sensitive or radiation-sensitive resin composition (II) containing resin whose polarity increases due to an action of acid and solubility to developer containing organic solvent decreases; (f) exposing the second film; and (g) developing the exposed second film by using developer containing organic solvent and forming a second negative pattern. There are also provided a method of manufacturing an electronic device, and an electronic device.